Lambeth SE1 | Conservation area residential development

Design considerations and Lambeth planning assessment matters

HERITAGE STATEMENT
Our proposals seek to add an additional storey to the three storey existing building and create a new 4-storey mixed use building that is in-keeping and enhances the character of the streetscape that includes a majority of 2-4 storey volumes with higher buildings punctuating and defining views along Lower Marsh street.

The mansard roof proposed retains the visual identity of the area and defines the corner and the end of the terrace of Nos. 127-137 that makes a positive contribution to the conservation area as clearly recognised in the Area Statement produced by the Council. Nos 127-133 as worthy of retention as noted in the Statement; the application property at No. 136 is not considered to be making as a positive contribution as Nos. 127-133 and our proposals look to redress this and make a valuable contribution to this important group of buildings. Our proposed roof extension respects the host building and is a good neighbour to buildings across and along Lower Marsh; this is clearly evident if the photographic survey of the street is taken into account.

Our proposals look to match the architectural detailing, the mansard roof forms in the immediate area, and reinstate the brickwork that exist underneath the render that currently creates a poor visual contribution of the currently neglected property. The picturesque forms of the mansard roofs and dormer windows fully fit into the character of the street and make a positive contribution of this market street when viewed both from the direction of the front and side elevation. The rear elevation is also visible from the railway lines so benefits of our proposals extend to all possible
public viewpoints.

The Area Statement notes: “Dormers, where appropriate, should be carefully designed and detailed to match the host building and be detailed and scaled in the traditional manner. Traditional dormers are small, with slender construction in timber and lead and containing side hung casements or sliding sashes.” We have carefully considered such guidelines and our proposals look to make a positive contribution and enhance the character of the conservation area while at the same time providing an additional in demand residential unit ultimately within the building fabric of the terrace.

DESIGN AND ACCESS STATEMENT
No. 136 Lower Marsh is a three storey building that forms a later addition to the terrace of Nos 127-135 along Lower Marsh; the property is separated from the rest of the terrace by an infill connection and No. 136 retains a distinctive character as the result of both the architectural detailing of this doors and windows (including balcony features) and the level of its floors when compared to Nos. 127-136.

Please see evidence in the photographic survey that includes photographs of elevations along both sides of Lower Marsh.

We propose the additional of a mansard roof extension to add a new residential unit of 37sqm and create a new 4-storey building which is typical of the mixed use properties along Lower Marsh. We also propose to re-instate the brickwork of the existing building by removing the dated render cladding to match the brickwork of Nos. 134-135. We also propose raising the height of the parapet wall to match the height of Nos. 134-135 and create a more harmonious relationship between the two buildings.

We do not propose to change the access at the front of the building and we propose the use of the same waste arrangements similar to the other two residential units in the building. No provisions for bicycle and car parking areas have been made considering the central location of the property close to public transport including a
bicycle docking station for Santander self-service bike-sharing scheme that exists opposite No. 136.

ENVIRONMENTAL STATEMENT
Materials – Responsible selection of key construction elements:
_We propose the re-use of the existing brickwork that is currently covered by the rendering cladding and the use of reclaimed bricks for raising the parapet wall as shown in the drawings. This will result in the lowest environmental impact achievable.
_The new walls will use Kingspan OPTIM-R which is a vacuum insulation panel. It is an optimum performance insulation product which provides a high level of thermal efficiency with minimal thickness.
_Thermal insulation U-values for floors, walls and the roof to match or exceed the standards set by the current building regulations.
_Zinc roof cladding: Sustainable (from 50 to 100 years depending on type of atmosphere; BRE base EPD calculations on 80 years); Recyclable (over 95 % of old rolled zinc is recovered and re-used in various fields of application); Low energy consumption (consumption of energy required to manufacture zinc metal from
mineral is lower than that required for any other metal used in building envelope applications).
_Specification of materials with durable properties and long lasting qualities.

Water – Water Efficiency:
_The provision of fittings and systems to improve water efficiency.
_Monitoring and detection systems that provide information on the performance on water systems in the property.
Natural ventilation and lighting:
_Adequate ventilation that doesn’t compromise the cost of heating or your comfort through openable windows that will allow cross ventilation and windows with trickle vents for the necessary background ventilation.
_Access to natural light and controllable artificial lighting where necessary.
_Suitably located controls that are accessible and easy to use.
_Use of low energy light fittings.
Noise:
_Insulation and treatment that creates the right acoustic environment.
_Internal sound insulation between the residential units both horizontally and
vertically.
_Designing the layout and construction to minimise the impacts of noise from the local area.
Transport provision:
_Rewarding the accessibility of good public transport connections for the new residential unit.
_Encouraging the provision of adequate and safe cycling and pedestrian facilities through the use of the Santander self-service bike-sharing scheme that exists opposite No. 136.
Dwelling space and Lifetime Homes requirements
_Adequately sized for living and storage
_Efficiently designed with accessibility and adaptability for all home owners in mind as much as possible and in the context of the actual site and building restrictions.
_Open plan, functional and adaptable to continue to meet the demands of modern life.

For similar projects to this Lambeth SE1 conservation area residential development project please see our residential guides for:

• House extension architect design ideas

• Kitchen extension architect design ideas

• Rear extension architect design ideas

• Residential refurbishments architect design ideas

• Side extension architect design ideas

Click to read our Lambeth residential architect and planning guide that includes detailed planning and design advice for your home project. For inspiration and ideas see below some of our other residential projects in Lambeth.

BOROUGH SPECIFIC ARCHITECT AND PLANNING GUIDES FOR YOUR HOME PROJECT

Your local Council will have in place design and planning requirements for your home project and you will need to obtain planning approval for a wide range of extensions and alterations to your property.

When you get in touch we will offer you detailed advice about what is likely that your Council will approve and in the meantime we have prepared the following architectural and planning guides that include extracts of the relevant planning policy and examples of our projects in our Borough.

Barnet residential architect and planning guide, Camden residential architect and planning guide, Enfield residential architect and planning guide, Hackney residential architect and planning guide, Hammersmith Fulham residential architect and planning guide, Haringey residential architect and planning guide, Hounslow residential architect and planning guide, Islington residential architect and planning guide, Kensington and Chelsea Conservation architects, residential and planning guide,  Lambeth residential architect and planning guide, Lewisham residential architect and planning guide, Newham residential architect and planning guide, Redbridge residential architect and planning guide, Richmond residential architect and planning guide, Tower Hamlets residential architect and planning guide, Waltham Forest residential architect and planning guide, Wandsworth residential architect and planning guide, Westminster residential architect and planning guide

Click for projects in your area