Streatham / Norbury — covered by Lambeth Council.
Planning permission drawings delivered by an MCIAT chartered team.
Building regulations drawings delivered by an MCIAT chartered team.
Loft conversion drawings delivered by an MCIAT chartered team.
House extension drawings delivered by an MCIAT chartered team.
Mansard roof extensions delivered by an MCIAT chartered team.
Garage conversion drawings delivered by an MCIAT chartered team.
Basement conversion drawings delivered by an MCIAT chartered team.
Structural calculations delivered by an MCIAT chartered team.
Measured building survey delivered by an MCIAT chartered team.
Party wall services delivered by an MCIAT chartered team.
Rear dormer drawings delivered by an MCIAT chartered team.


SW16 primarily covers Streatham / Norbury in Lambeth. It also touches Wandsworth, Merton, Croydon.
Decisions for SW16 are made by Lambeth Council. Standard Permitted Development rules apply for most rear extensions and loft conversions on terraced and semi-detached houses, unless the property is in a conservation area, is listed, or sits under an Article 4 Direction. Article 4 in Lambeth: Yes.
Building regs from £950. We do not charge hourly. Free site survey across all SW16 addresses.
From first call to planning decision: typically 12–14 weeks. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination. Lambeth Council timelines align with the national norm.
Streatham / Norbury in SW16 is characterised by the housing stock of Lambeth — broadly victorian terraces in clapham, brixton, herne hill.

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Every SW16 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. SW16 fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| SW16 | Streatham / Norbury | Edwardian terraces, post-war flats | SW16 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. |
| SW16 | Streatham | Edwardian terraces, post-war flats | Streatham sits inside SW16; drawing package proposals here are determined by Lambeth Council. |
| SE11 | Kennington / Vauxhall | Georgian terraces, post-war estates | Adjoining district to SW16, also inside Lambeth for drawing package purposes. |
| SE24 | Herne Hill | Victorian villas, Edwardian terraces | Adjoining district to SW16, also inside Lambeth for drawing package purposes. |
| SE27 | West Norwood / Tulse Hill | Victorian terraces, Edwardian villas | Adjoining district to SW16, also inside Lambeth for drawing package purposes. |
| SW2 | Brixton Hill / Tulse Hill | Victorian terraces, post-war estates | Adjoining district to SW16, also inside Lambeth for drawing package purposes. |
| SW11 | Battersea / Clapham Junction | Victorian terraces, mansion blocks | Adjoining district to SW16, also inside Wandsworth for drawing package purposes. |
| SW12 | Balham | Victorian and Edwardian terraces | Adjoining district to SW16, also inside Wandsworth for drawing package purposes. |
| SW15 | Putney / Roehampton | Edwardian terraces, Victorian villas, mansion blocks | Adjoining district to SW16, also inside Wandsworth for drawing package purposes. |
| SW17 | Tooting / Earlsfield | Edwardian terraces | Adjoining district to SW16, also inside Wandsworth for drawing package purposes. |
Roof pitch, wall build-up and plot depth change every few SW16 streets, and each one changes what a drawing package can achieve at that address.
Conservation areas covering SW16 (Streatham / Norbury): Lambeth Council runs 64, and Kennington, Brockwell Park, Streatham Hill are the ones SW16 (Streatham / Norbury) owners meet most. A drawing package inside a SW16 (Streatham / Norbury) conservation area loses permitted development, so the SW16 (Streatham / Norbury) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Brixton Road a drawing package is judged on the street elevation first.
What Article 4 removes near SW16 (Streatham / Norbury): Borough-wide Article 4 for HMO conversions; plus office-to-residential restrictions. Before pricing a drawing package we check whether the SW16 address is inside the mapped area, because Lambeth Council draws the SW16 (Streatham / Norbury) boundary street by street rather than across the whole of SW16 (Streatham / Norbury).
What SW16 (Streatham / Norbury) is built from: 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. That mix decides the drawing package route in SW16 (Streatham / Norbury) more than the postcode does, and it is what a Lambeth Council case officer reads first. A householder application costs £548 paid to Lambeth Council direct, with 8 weeks to a decision once validated.
Conservation areas covering SW16 (Streatham / Norbury): Wandsworth Council runs 45, and Wandsworth Common, Clapham Common West, Tonsley are the ones SW16 (Streatham / Norbury) owners meet most. A drawing package inside a SW16 (Streatham / Norbury) conservation area loses permitted development, so the SW16 (Streatham / Norbury) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Clapham Common West a drawing package is judged on the street elevation first.
What Article 4 removes near SW16 (Streatham / Norbury): Article 4 for HMO conversions covering the whole borough. Before pricing a drawing package we check whether the SW16 address is inside the mapped area, because Wandsworth Council draws the SW16 (Streatham / Norbury) boundary street by street rather than across the whole of SW16 (Streatham / Norbury).
What SW16 (Streatham / Norbury) is built from: Extensive Victorian terraced streets — the classic London side-return extension opportunity; Edwardian villas around the commons; 1930s semi-detached in Southfields. Family-oriented, high side-return extension and loft conversion rates; planning department experienced with Victorian terrace modifications. That mix decides the drawing package route in SW16 (Streatham / Norbury) more than the postcode does, and it is what a Wandsworth Council case officer reads first. A householder application costs £548 paid to Wandsworth Council direct, with 8 weeks to a decision once validated.
Sources for this SW16 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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