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Architectural drawings · Lambeth

Architectural drawings in Streatham

Fixed-fee planning, building regulations, loft, extension and mansard drawings for properties in Streatham (SW16). MCIAT chartered. 30% below typical London architect rates.

Streatham at a glance

Borough
Lambeth
Postcodes
SW16
Dominant stock
Edwardian terraces, post-war flats
Local landmarks
Streatham High Road
Article 4 in force
Yes
Conservation areas in borough
64
Architectural detail on a London period property — architectural drawings in Lambeth
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MCIAT chartered drawings for planning, building regs, lofts and extensions — fixed fees 30% below typical London architects. Tell us what you need and we’ll reply the same working day.

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  • Fixed fees from £840

Local context

Why Streatham needs a specialist

Streatham is Edwardian terraces, post-war flats. The streetscape is dominated by edwardian terraces, post-war flats, which means design decisions — roofscape, rear glazing, side returns, mansards — must respect the period rhythm of the row. Lambeth planning (Lambeth Council) decides applications here. Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions.

Services in Streatham

Frequently asked in Streatham

Streatham planning questions

Do I need planning permission for an extension in Streatham?

Streatham sits within Lambeth, so applications are decided by Lambeth Council. Most single-storey rear extensions and side-returns on terraced or semi-detached homes in Streatham fall under Permitted Development — up to 3m deep (attached) or 4m (detached), under 4m high. Flats, listed buildings and conservation areas always require full planning. Article 4 status here: Yes. We check eligibility free at the site visit.

What's the dominant housing stock in Streatham?

Streatham is characterised by Edwardian terraces, post-war flats. The dominant stock is Edwardian terraces, post-war flats. We've drawn extensions and lofts for every period represented here — Victorian rear additions, Edwardian side returns, 1930s wrap-arounds, and contemporary infill where the streetscape allows.

How long does a planning application take in Streatham?

Lambeth Council statutory determination is 8 weeks for householder applications. Validation typically adds 1–2 weeks. From your first call to a decision, expect 12–14 weeks total: 1 week measured survey, 2 weeks design, 1–2 weeks validation, 8 weeks determination. We've achieved a 98% first-time approval rate across Lambeth.

How much does a loft conversion cost in Streatham?

Loft conversion drawings in Streatham start at £1,225 for planning + building regs combined. Construction cost (separate from drawings) is £45,000–£75,000 for a standard rear dormer on a Victorian or Edwardian terrace, £65,000–£95,000 for a hip-to-gable plus dormer. We quote drawings as a fixed fee — no hourly creep.

Are there conservation areas in Streatham?

Lambeth has 64 designated conservation areas. Nearest to Streatham: Clapham Common. In a conservation area, full planning is required for most external work (including roof additions, rendering, replacement windows). We prepare a Heritage Statement covering the conservation area's character appraisal.

Nearby in Lambeth

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Postcodes covering Streatham

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Which postcode districts around Streatham do we cover for drawing package work?

Every Streatham postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. Streatham fees below are the statutory England rates for 2026, not drawing package estimates.

PostcodeAreaDominant stockWhat it means for a drawing package
SW16Streatham / NorburyEdwardian terraces, post-war flatsSW16 straddles a boundary: Streatham / Norbury addresses fall to Lambeth Council or Wandsworth Council or Merton Council or Croydon Council, so confirm which authority validates the drawing package before submitting SW16 drawings.
SW4ClaphamVictorian terraces, Edwardian villasNeighbouring Clapham, where drawing package work is handled by the same Lambeth Council case officers.
SW2BrixtonVictorian terraces, post-war estatesNeighbouring Brixton, where drawing package work is handled by the same Lambeth Council case officers.
SE24Herne HillVictorian villas, Edwardian terracesNeighbouring Herne Hill, where drawing package work is handled by the same Lambeth Council case officers.
SE11KenningtonGeorgian terraces, post-war estatesNeighbouring Kennington, where drawing package work is handled by the same Lambeth Council case officers.
SW9StockwellVictorian terraces, post-war estatesNeighbouring Stockwell, where drawing package work is handled by the same Lambeth Council case officers.
SE11VauxhallRegency terraces, modern apartments, post-war flatsNeighbouring Vauxhall, where drawing package work is handled by the same Lambeth Council case officers.
SE27West NorwoodVictorian terraces, Edwardian villasNeighbouring West Norwood, where drawing package work is handled by the same Lambeth Council case officers.
SE27Tulse HillVictorian villas, Edwardian terracesNeighbouring Tulse Hill, where drawing package work is handled by the same Lambeth Council case officers.
SE1WaterlooGeorgian terraces, post-war flats, new-buildNeighbouring Waterloo, where drawing package work is handled by the same Lambeth Council case officers.

Which Streatham neighbourhoods suit a drawing package best?

Roof pitch, wall build-up and plot depth change every few Streatham streets, and each one changes what a drawing package can achieve at that address.

What local planning policy applies to a drawing package in Streatham?

Conservation areas covering Streatham: Lambeth Council runs 64, and Kennington, Brockwell Park, Streatham Hill are the ones Streatham owners meet most. A drawing package inside a Streatham conservation area loses permitted development, so the Streatham submission is a householder application at £258 decided in 8 weeks — not a £120 prior approval decided in 6 weeks. In Streatham Hill a drawing package is judged on the street elevation first.

Streatham and Article 4: Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions. A drawing package planned at a SW16 address is checked against that direction first; Lambeth Council publishes the Streatham extent, and the SW16 line rarely follows the Streatham boundary you would expect.

The building fabric around Streatham: Victorian terraces in Clapham, Brixton, Herne Hill; Edwardian villas; 1930s and post-war estates in parts of Streatham; Georgian in Kennington. Mix of dense Victorian residential and post-war estate; strong conservation area coverage; generally design-led planning decisions. A drawing package in Streatham is scoped against that stock first. Our Streatham fixed fee starts at £840; the £1,750 Complete package runs the Streatham scheme through Lambeth Council planning and building control in one go.

Which neighbouring authorities border Streatham?

Sources for this Streatham drawing package page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.

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