Planning permission drawings, loft conversions, extensions, and building regulations for Streatham's Victorian and Edwardian terraces. MCIAT chartered, fixed fees, Lambeth planning expertise built in.
Streatham stretches along the A23 in the SW16 postcode within the London Borough of Lambeth. Its long streets of Victorian and Edwardian terraces, relatively affordable compared to neighbouring areas, attract young families and professionals who invest in loft conversions and extensions to create the space they need.
Victorian and Edwardian terraces: Streatham's housing stock is predominantly Victorian and Edwardian terraces in a variety of sizes — from compact two-bed cottages to substantial three-storey family houses. These properties are well suited to dormer loft conversions, rear extensions, and side-return infills. We design projects that work with the existing structure and proportions of each house type.
Conservation areas: The Streatham Lodge Conservation Area and Streatham Common Conservation Area cover selected streets with particular architectural character. Within these zones, Article 4 Directions may restrict permitted development rights, and Heritage Statements are required for planning applications. Our MCIAT-chartered team prepares conservation-sensitive designs.
Lambeth's dormer guidance: Lambeth Council has published specific guidance on dormer design for residential properties. The council expects rear dormers to be set back from the eaves, set in from party walls, and constructed in materials that match the existing roof. Front dormers are generally resisted on Victorian and Edwardian properties. We design dormers that comply with Lambeth's standards.
Value-driven projects: Streatham's relatively lower property values (compared to Clapham, Balham, or Dulwich) mean that project budgets are often tighter. Our fixed-fee pricing from £840 makes professional architectural drawings accessible, and we design schemes that deliver maximum impact within realistic construction budgets.
Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Direct answers to the questions Streatham homeowners ask us every week about planning, extensions, and loft conversions.
Start a free quoteYes, loft conversions are very popular in Streatham. Outside conservation areas, rear dormers under permitted development are straightforward and can add a bedroom and bathroom without planning permission. Within conservation areas, planning permission is required. We survey your roof and confirm the best approach.
Under permitted development, terraced houses can extend up to 4 metres at single storey (up to 6 metres with prior notification). Semi-detached houses can extend up to 4 metres (or 6 metres with prior notification). Within conservation areas, planning permission is typically required. We confirm what applies to your specific property.
Lambeth expects rear dormers to be set back from the eaves by at least one tile course, set in from party walls by at least 200mm, and clad in materials matching the existing roof. The dormer should be subordinate to the existing roof form. Front dormers are generally refused on period properties. We design dormers that meet these standards.
Our Essentials package starts from £840 for a single submission. The Complete package from £1,750 covers planning, building regulations, and structural calculations. Fixed fees with no hidden charges — particularly important for budget-conscious projects.
Side-return extensions are an excellent way to widen a narrow kitchen or dining room. They are often achievable under permitted development if the roof is no higher than 4 metres and the extension does not extend beyond the rear wall of the original house. We assess your property and design a scheme that maximises the available space.
We cover every London neighbourhood. Here are areas adjacent to Streatham where we work regularly.
Every service you need for a Streatham project, from a single chartered team.
Dormers, mansards, and Velux conversions designed for local roof profiles and planning constraints.
Rear extensions, side returns, wraparounds, and basement feasibility for local housing stock.
Construction-ready drawing packages compliant with all Approved Documents, submitted to local Building Control.
Free quote in 60 seconds. Fixed fee from £840. MCIAT chartered. Conservation area expertise included.
Get my free quote