How to find and choose a residential architect in London (2026 Guide)
A good residential architect will help you navigate all of this – turning an initial idea into a built project that works day to day, passes the right approvals, and makes financial sense over the long term.
This guide explains how to choose a residential architect in London: where to look, what credentials to check, how to compare fees and which questions to ask before making an appointment.
Why London homeowners hire a residential architect
For many projects, especially in London’s older housing stock, an architect is not a “nice to have” – they are the person who helps you:
- Clarify what you’re really trying to achieve: space, light, comfort, resale value, energy savings – or a blend of all four.
- Turn that brief into well-resolved plans, sections and details that a builder can price and build.
- Steer you through planning permission, Building Regulations and other consents.
- Co-ordinate structural engineers and other specialists.
- Manage quality, cost and risk during construction, if you ask them to stay involved.
GOAStudio London residential architecture
George Omalianakis, BA (Hons) B.Arch Pg Dip Environmental Design.
Chartered RIBA architect and ARB registered.
RIBA Conservation Registrant specialism in conservation areas, period and Listed buildings.
Residential expert contributor for magazines including Which? magazine and Ideal Home.
Last reviewed by George Omalianakis for GOAStudio: August 2026
RIBA
The Royal Institute of British Architects (RIBA) notes that architects can help from early feasibility through to planning, detailed design, tendering and contract administration using the industry-standard RIBA Plan of Work. (Source: RIBA)
For London homeowners, architects add particular value where:
- The property is period, in a conservation area or listed.
- You’re altering structure (removing walls, opening up rear façades, adding basements or roof extensions).
- You want to improve energy performance of an older or solid-wall home without creating damp or condensation problems.
- You’re combining or subdividing flats, or looking at a small residential development.
RIBA also stresses that even if you don’t need full services, a one-off consultation can be an efficient way to test ideas, budgets and planning risk before you spend on drawings. (Source: RIBA)
Feasibility Review
A request a Feasibility Review is often the best first step if you want a realistic view of planning restrictions, design scope and what is worth pursuing before you commit further.
Home Consultation
If you already need more detailed, property-specific advice, Book a home consultation and we can help you clarify the brief, priorities and likely next steps.
What a residential architect actually does
A London residential architect’s role typically covers four broad phases:
Feasibility and Brief
- Visit your home or review it remotely to understand how you live now and what isn’t working.
- Assess planning context, conservation or listed-building constraints, and any lease or freeholder limitations.
- Help you build a realistic brief and an indicative budget, so ambitions and cost are aligned from the start. (Source: RIBA)
Design and Planning
- Develop sketch options to explore different layouts, massing and roof forms.
- Refine a preferred scheme, including daylight, views, storage, circulation and how spaces will feel in daily use.
- Prepare and submit planning or lawful development applications, and negotiate with your local authority where needed. (Source: HomeOwners Alliance)
For a fuller explanation of applications, assessment and timescales, read our guide to how planning permission works in London.
Technical Design and Tender
- Produce Building Regulations and technical drawings, often coordinating a structural engineer.
- Assemble a specification and tender package so builders can price like-for-like, reducing nasty surprises on site. (Source: HomeOwners Alliance)
Construction and Handover (if you retain them For this)
- Help you select a builder and advise on an appropriate building contract.
- Inspect works on site, answer builder queries, issue instructions, check quality and certify payments.
- Help resolve defects and snags at the end of the build.
RIBA recommends agreeing in writing which of these services you want, and under which standard form of appointment (for domestic projects, usually a RIBA Domestic Professional Services Contract). (Source: RIBA)
Side extensions, larger homes and corner plots
In Wandsworth, side space is not always spare space; it can be part of the character of the street, especially where gaps between houses are important.
This is particularly relevant for detached and semi-detached houses, end-of-terrace homes and corner plots.
A side extension may create useful space, but it can also close the gap between buildings, unbalance the original façade or appear bulky.
In some streets, the rhythm between houses is as important as the houses themselves. On corner plots, a side addition may also be highly visible from the side road.
When handled well, a side extension can make the house feel more balanced and useful without eroding the rhythm of the street.
Early design advice can help test set-backs, roof form, materials, side access, boundary space and how the proposal will sit in the street.
The Rules
Before you look at portfolios or fees, it’s important to understand the regulatory landscape.
Protected Title and the ARB Register
In the UK, the title “architect” is protected by law under the Architects Act 1997. Only individuals on the Architects Registration Board (ARB) Register can use it – anyone else must use terms like “architectural designer” or “architectural technologist” instead. (Source: Architects Registration Board)
ARB maintains the official online Register of architects. If someone is not on the Register, they are not legally an architect, no matter what their marketing claims. (Source: Architects Registration Board)
RIBA Chartered Architects and Practices
Most UK architects also choose to join RIBA. RIBA explains that:
- All architects have completed a lengthy training and professional qualification route.
- RIBA Chartered Practices must employ Chartered Architects, carry appropriate professional indemnity insurance, operate quality-management systems and follow a Code of Practice. (Source: RIBA)
For London homeowners, that gives a simple hierarchy:
- Check the individual is on the ARB Register.
- Prefer architects who are also RIBA Chartered.
- Look for a RIBA Chartered Practice when you want a practice-level quality mark.
Where to find and research London residential architects
There is no single “best residential architect in London” but there are reliable ways to build a good shortlist.
Professional Directories
- RIBA Find an Architect – RIBA’s free matching service connects you with suitable Chartered Practices based on your project type, budget and location, drawing on a membership of over 4,000 accredited firms. (Source: RIBA)
- ARB Register – lets you verify instantly whether an individual using the title “architect” is genuinely registered. (Source: Architects Registration Board)
- HomeOwners Alliance “Find an architect near me” – a consumer-oriented service that connects homeowners with architects and architectural technologists in their area. (Source: HomeOwners Alliance)
Word-Of-Mouth And Local Evidence
- Ask neighbours, local friends and trusted builders which architects they’ve had good experiences with.
- Walk your area: many London architects publish project boards outside sites or on local house-extension features.
- Check local planning portals to see which architects are repeatedly securing approvals on streets like yours.
Online Research
GOAStudio’s own advice for homeowners searching “residential architects near me” is to look for practices that specialise in domestic work, then verify ARB and RIBA status and examine their track record on homes similar to yours. (Source: GOAStudio)
When you find a promising practice, read beyond glossy images. Look for:
- Project write-ups that explain planning context, constraints and solutions.
- Evidence of work in your borough.
- Signs they understand older and traditional buildings if you own one.
Shortlisting
Knowing how to choose a residential architect in London starts with creating a focused shortlist of three to five suitable practices.
Core Filters
- Proper credentials
- Architect on the ARB Register.
- Ideally RIBA Chartered and, if relevant to your project, on a specialist register such as the RIBA Conservation Register. (Source: RIBA)
- Relevant residential portfolio
- Clear examples of London home extensions, refurbishments or small developments – not just offices or commercial projects.
- Projects of a similar construction budget to yours.
- Local planning experience
- Familiarity with your borough’s Supplementary Planning Documents and local plan policies, particularly for conservation areas or stricter inner-London councils.
- GOAStudio, for example, publishes borough-by-borough planning and design guides and notes that they work across a wide spread of London boroughs including Barnet, Camden, Hackney, Haringey, Islington, Kensington & Chelsea, Lambeth, Lewisham, Wandsworth, Waltham Forest and Westminster. (Source: GOAStudio)
Specialisms that matter in London
For many London homes, the most important differentiator is not style but judgment:
- Older and traditional buildings – Solid-wall properties behave differently to modern cavity construction. GOAStudio highlights retrofit and energy efficiency for older and traditional homes as a core specialism, supported by additional training in energy efficiency for traditional buildings and membership of The Green Register. (Source: GOAStudio, The Green Register)
- Conservation areas and listed buildings – You’ll want an architect who understands heritage significance, can negotiate with conservation officers and can balance sensitive fabric with contemporary living. GOAStudio’s director is a RIBA Conservation Registrant and the practice focuses strongly on conservation-area and listed-building projects. (Source: GOAStudio, The Planning Review)
- Energy-efficient retrofit – Look for architects who talk about ventilation, moisture risk and fabric-first improvements, not just bolt-on technologies. Green Register member practices, such as GOAStudio, commit to up-to-date sustainable construction knowledge. (Source: The Green Register)
Cultural Fit
Lastly, you’ll be working closely with your architect for months or years. Use their website, testimonials and initial conversations to gauge:
- How clearly they explain process and risk.
- Whether they listen as much as they talk.
- Whether their built work feels like homes people can live in, not just photographs.
RIBA recommends meeting a shortlist of practices in person and choosing a team you feel you can trust, not simply the lowest fee. (Source: RIBA)
Conclusion
If you are considering how to choose a residential architect in London, focus on relevant experience, clear communication, appropriate credentials and whether the architect understands the particular needs of your home.
Residential architect fees in London explained (2026)
Fees are often the most confusing part of appointing an architect. Understanding the main models will help you compare like-for-like.
Typical fee structures
Across the UK, architects usually charge in one or more of three ways: fixed fees, percentage of construction cost, and time-based (hourly or daily) charges. This structure is widely described by both RIBA and the HomeOwners Alliance. (Source: RIBA, HomeOwners Alliance)
- Percentage of construction cost – The classic model. You agree an estimated construction budget and a percentage for the architect’s services. On domestic work, HomeOwners Alliance notes that most architects charge somewhere between 3% and 15% of the build cost, depending on size, complexity and level of involvement. (Source: HomeOwners Alliance)
- Fixed fee – Common for clearly defined packages, e.g. planning drawings for a simple rear extension. HOA’s examples suggest planning-stage drawings for a single-storey extension might be in the region of £1,000–£2,500, with further fees for Building Regulations drawings. (Source: HomeOwners Alliance)
- Time-charge – An hourly or daily rate where scope is uncertain or open-ended; HOA reports typical architect hourly rates of around £50–£100 across the UK, with London often at the upper end. (Source: HomeOwners Alliance)
Many practices will use a hybrid approach – for example, a fixed fee for feasibility and planning, then percentage-based for detailed design and construction.
What do London homeowners actually pay in 2026?
Different sources give similar ranges:
- RIBA’s London guidance notes that for full services on a £150,000 domestic project, typical architect fees might fall roughly between 8% and 12%, with slightly higher percentages on smaller budgets. (Source: RIBA)
- HomeOwners Alliance summarises typical UK architect fees as 3%–15% of construction cost, with higher percentages for complex refurbishments and lower ones for straightforward new builds. (Source: HomeOwners Alliance)
- London-focused fee guides suggest that, for a full service on a house extension or renovation, London homeowners commonly pay around 8%–15% of build cost, with the average clustering around 10%–12%. (Source: Mayfair Studio)
For context, a £120,000 extension and refurbishment with a full architectural service at (say) 10% would imply architect’s fees of around £12,000 plus VAT. A more limited service (planning and Building Regulations drawings only) would usually cost significantly less, but would also place more risk and coordination responsibility on you.
Other project-wide professional costs
Architect fees are only part of the professional bill. You may also need to budget for:
- Structural engineer
- Party wall surveyor
- Planning consultant (for more sensitive or contested schemes)
- Building control fees
- Specialist reports (heritage, daylight/sunlight, arboricultural, flood risk etc.)
An independent 2026 fees calculator suggests that when you add architect, engineers, surveyors and statutory fees together, total professional costs for a domestic project can often sit around 15%–22% of construction cost. (Source: UKCalculator)
From 1 April 2026, the statutory fee for a typical householder application involving the enlargement or alteration of one dwellinghouse in England is £548. Planning Portal also currently charges £75.83 + VAT for chargeable online applications. Planning Portal application fee, Planning Portal service charge.
How GOAStudio approaches early-stage costs
GOAStudio’s approach is to separate early clarity from later commitments:
- Free initial Feasibility Review – When you first enquire, GOAStudio offers a no-obligation review of your property, photos and outline brief, providing early guidance on design potential, planning strategy, timescales and likely scope of services before any appointment is confirmed. (Source: GOAStudio)
- Optional 2-hour consultation (£250 + VAT) – For homeowners wanting in-depth, site-specific advice from the outset, GOAStudio also offers a paid consultation (often on site) to explore options and constraints in detail. (Source: GOAStudio)
After early stages, a tailored fee proposal will usually combine fixed fees for clearly defined stages with percentage-based fees for more open-ended construction phases.
The step-by-step process with a residential architect
Every practice structures its work slightly differently, but most London projects follow a recognisable sequence.
Step 1 – Enquiry and Initial Review
You share your address, photos, a short outline of what you’re considering and an approximate budget. A practice like GOAStudio will review this and respond with next steps, often starting with a free Feasibility Review. (Source: GOAStudio)
Step 2 – Home Consultation Or Detailed Briefing
If you decide to proceed, your architect will usually:
- Visit the property (or hold a detailed online meeting if necessary).
- Discuss how you use the space today and how you’d like to live in it.
- Identify key planning and technical constraints.
- Agree the brief, budget range and programme at a high level.
RIBA notes that many architects provide an initial conversation at low or no cost, and then charge for more detailed design advice – for example, a one-off consultation similar to GOAStudio’s 2-hour visit. (Source: RIBA)
Step 3 – Measured Survey and Feasibility Design
For most projects, the architect will arrange a measured survey (either in-house or via a surveyor), then develop initial design options. At this stage you’re exploring what’s possible within your budget and planning context, including:
- Alternative layouts and roof forms.
- How best to bring light into deep plans.
- How extensions meet the garden and surrounding context.
- Opportunities to upgrade insulation, glazing and services sensibly.
Step 4 – Planning Strategy and Application
Once a preferred direction is agreed, the architect will:
- Advise whether the project should be pursued under permitted development or full planning permission.
- Prepare drawings, statements and any supporting reports.
- Submit and monitor the application, responding to case-officer queries and negotiating amendments where appropriate.
RIBA stresses that local architects who regularly work with specific London planning departments are better placed to present your scheme in a way that aligns with local policy and increases the chances of approval. (Source: RIBA)
Step 5 – Technical Design and Tender
After planning consent or a lawful development certificate, your architect develops:
- Detailed technical drawings and specifications to satisfy Building Regulations and to give builders clear information.
- A coordinated package with structural engineer input and, if relevant, specialist details for heritage or retrofit work.
- A tender package so you can obtain comparable quotations from vetted contractors.
Guidance from RIBA and HomeOwners Alliance emphasises that this stage is crucial for cost control: the better the drawings and specification, the fewer variations and disputes on site. (Source: RIBA, HomeOwners Alliance)
Step 6 – Construction and Contract Administration
If you retain your architect through the build, they can:
- Help you select and appoint the builder under an appropriate form of contract.
- Visit site at agreed intervals to inspect progress and quality.
- Certify payments, monitor programme and manage variations.
- Help resolve issues if something isn’t built as agreed.
RIBA’s guidance explains that appointing an architect as contract administrator offers independent quality control and reduces the risk of disputes between you and the contractor. (Source: RIBA)
Flats, Leaseholds, Conservation Areas, and Listed Buildings
Many London projects fall into one or more “complex” categories.
This is where experienced residential architects really earn their keep.
Leasehold Flats and Licences To Alter
If you own a leasehold flat, your lease will almost certainly restrict structural alterations and may require a formal Licence to Alter from the freeholder for works such as removing walls, reconfiguring layouts, moving kitchens or bathrooms, or installing hard flooring. (Source: Property Passport)
Specialist guides for London leaseholders emphasise that the Licence to Alter process is separate from planning permission and Building Regulations: you typically submit drawings and structural details for the freeholder’s surveyor to review, and all their professional costs are usually paid by the leaseholder. (Source: Hampstead Renovations)
An architect familiar with leasehold work can:
- Review your lease with your solicitor or surveyor to flag where consent is needed.
- Produce drawings and method statements suitable for Licence to Alter applications.
- Coordinate with party wall surveyors where works affect shared walls or structures.
Conservation Areas and Listed Buildings
In conservation areas and for listed properties, the design conversation is at least as much about what you keep as what you add.
RIBA operates a Conservation Register for architects with particular skills in repair, retrofit and alteration of historic buildings. (Source: RIBA)
GOAStudio’s practice, led by a RIBA Conservation Registrant, focuses heavily on period and conservation-area homes across boroughs such as Camden, Haringey, Kensington & Chelsea and Waltham Forest, balancing careful fabric retention with contemporary layouts and improved energy performance. (Source: GOAStudio, The Planning Review)
A conservation-literate architect will help you:
- Understand which elements of your home are most sensitive.
- Shape proposals that respond to local character while still improving usability.
- Prepare heritage statements to support applications where needed.
A simple way to move forward
If you’re at the “thinking about it” stage, a practical next step is to:
- Walk through this guide with your own home in mind.
- Note your priorities: light, space, storage, energy bills, resale or all of the above.
- Gather basic information – address, a few photos, rough budget and timescale.
- Share that with GOAStudio through their enquiry form to request a free Feasibility Review. (Source: GOAStudio)
From there, you can decide whether a more in-depth consultation makes sense now, or whether you simply want a clearer view of planning risk before you commit.
How GOAStudio supports London homeowners and small residential developers
GOAStudio | London residential architecture is a specialist practice focused on residential extensions, renovations, retrofits and small developments across London. (Source: GOAStudio)
Practice Profile
- Founded in 2009 and led by George Omalianakis, a Chartered Architect and RIBA Conservation Registrant registered with both RIBA and ARB. (Source: GOAStudio, ProvenExpert)
- Member of The Green Register of Construction Professionals, reflecting a strong emphasis on fabric-first, energy-efficient retrofit for older and traditional buildings. (Source: The Green Register)
- Provides architectural services to homeowners across a wide range of London boroughs, including Barnet, Camden, Hackney, Haringey, Islington, Kensington & Chelsea, Lambeth, Lewisham, Wandsworth, Waltham Forest and Westminster. (Source: GOAStudio)
- Recognised in independent awards and directories as a multi-award-winning residential architecture firm in London. (Source: homify)
George also writes and comments regularly for publications such as Which? Ideal Home Homes & Gardens and Homebuilding & Renovating on topics including extensions, loft conversions, listed-building renovations and practical energy upgrades, reflecting a pragmatic, homeowner-focused approach. (Source: GOAStudio, Homebuilding & Renovating)
How GOAStudio’s process aligns with this guide
- Free Feasibility Review – Early, no-obligation assessment of address, photos and brief, providing realistic first guidance on planning, scope and likely next steps. (Source: GOAStudio)
- Home Consultation (optional) – A focused 2-hour session (£250 + VAT) at your property or prospective purchase, helping you weigh up options such as “extend, renovate or walk away?”. (Source: GOAStudio)
- Design, planning and technical stages – Tailored to your project, with particular emphasis on:
- Respecting the character of period and conservation-area homes.
- Integrating energy-efficient measures suitable for traditional fabric.
- Minimising unnecessary structural intervention to keep costs under control. (Source: GOAStudio)
- Residential focus only – The practice works almost exclusively on homes and small residential developments, meaning its case studies and experience are directly relevant to typical London homeowner projects. (Source: GOAStudio)
Key Questions to ask before you appoint an architect
When you reach the interview stage with your shortlist, the quality of your questions will shape the quality of your decision. Consider asking:
- “What experience do you have with homes like mine?”
Ask for examples of projects with the same house type (e.g. Victorian terrace, mansion-block flat, 1930s semi), similar budget and similar planning constraints (conservation area, listed building, Article 4 direction). - “How will you manage planning risk in my borough?”
Ask which local planning policies are most relevant to your proposal, why, and how they’ve navigated them before. Practices like GOAStudio publish borough-specific design guides precisely to address this. (Source: GOAStudio) - “How do you approach older and traditional buildings?”
If your home predates around 1919, ask specifically about moisture, breathability and insulation strategy; look for evidence of additional training or membership of bodies such as The Green Register. (Source: The Green Register) - “Who will actually run my project?”
Clarify whether you’ll be working directly with a senior architect or a broader team, and how continuity is maintained. - “How are your fees structured, and what’s included?”
Ask them to explain which stages are fixed-fee, which (if any) are percentage-based, and what additional items (surveys, planning fees, consultants) are excluded. Cross-check against the fee structures described by independent sources such as the HomeOwners Alliance. (Source: HomeOwners Alliance) - “What approvals will my project require?”
Beyond planning and Building Regulations, leasehold flats often require a formal Licence to Alter from the freeholder for structural or layout changes. This is a legal consent separate from planning permission, and is standard in many London leases. (Source: Property Passport) - “How do you manage budget and cost changes?”
Ask how they estimate costs at each stage, how they respond if tenders come in high, and how they handle change control during construction. - “How will we communicate?”
Agree preferred channels (email, shared folders, in-person meetings), decision points and update frequency. - “What happens if there’s a dispute or something goes wrong?”
A properly appointed ARB-registered architect must carry professional indemnity insurance and follow a professional code; ask how they handle complaints or disputes. (Source: Architects Registration Board) - “What does success look like for you on this project?”
The best answers talk about how you live in the finished home – light, comfort, flow and long-term robustness – not just a photograph.
If a practice cannot answer these questions clearly and patiently, they may not be the right fit.
Quick FAQ for London homeowners
Do I always need an architect for a London house extension?
Not legally – permitted development rights allow certain straightforward extensions without planning permission – but both RIBA and consumer bodies strongly recommend speaking to an architect for anything beyond the very simplest alterations, especially in conservation areas or on period homes. (Source: RIBA, HomeOwners Alliance)
How much does a residential architect cost in London in 2026?
For a full service on a typical London house extension or refurbishment, many homeowners pay somewhere around 8%–15% of the construction cost, with limited-scope services costing less. (Source: RIBA, HomeOwners Alliance, Mayfair Studio)
Should I hire a builder first or an architect?
RIBA advises appointing an independent architect before committing to a builder, so your design, approvals and tender information are prepared in your interest, and multiple contractors can quote on a comparable basis. (Source: RIBA)
How do I check if someone is a genuine architect?
Use the Architects Registration Board’s online Register – if their name is not listed, they are not legally an architect, whatever their website claims. (Source: Architects Registration Board)
What’s the best way to start with GOAStudio?
Complete the contact form on GOAStudio’s website with your address, brief description of the works, any drawings or photos, budget range and timescale. The practice will review this and respond with a free Feasibility Review and suggested next steps, which may include a paid 2-hour consultation if more detailed advice is needed. (Source: GOAStudio)
If you work through this guide and take those initial steps, you’ll be well placed to choose a residential architect who can responsibly reshape your London home, with better light, layout, comfort and long-term value, and with a clear, realistic understanding of the process ahead.
Not sure where to start with your renovation or extension?
Read this before you meet an architect, speak to a builder or spend money on drawings.
This free, architect-prepared guide walks you through the 15 essential questions every homeowner should ask before starting a project.
"Should we renovate, extend… or walk away?
15 Questions every London homeowner must ask before starting a project to include homes in Conservation Areas and Listed Buildings."
Whether you're planning a modest rear extension or major alterations to a listed home, it will help you avoid expensive mistakes and give you clarity on what’s possible for your property. Includes guidance on:
Planning approvals. Conservation areas.
Timelines and costs. Appointments you need to make.
Design and sustainability options.
When to press ahead and when to walk away
We provide architectural services for residential projects in the following London Boroughs:
Barnet, Camden, Enfield, Hackney, Hammersmith and Fulham, Haringey, Islington, Kensington and Chelsea, Lambeth, Lewisham, Newham, Tower Hamlets, Waltham Forest, Wandsworth, Westminster
We specialise in
- Greener homes
- Retrofit and energy efficiency for older and traditional buildings
- Conservation areas
- Listed Buildings
- Homeowner architectural services
- Property developments architectural services
GOAStudio London residential architecture limited.
86-90 Paul Street, EC2A 4NE, Hackney
Chestnut Avenue South, E17 9EJ, Waltham Forest
t: 0203 984 3005
