Planning drawings, building regulations, loft conversions, house extensions and mansards — delivered across Wandsworth by MCIAT chartered technologists with deep knowledge of Wandsworth Council's policies.
Nearly everything it decides: 91.3% of 3,107 householder applications, fourth highest of the 33, with 271 refusals. The trade is the clock — 85.8% inside eight weeks and 5.9% beyond thirteen — and a 9.4% withdrawal rate above the 7.4% London figure.
| Measure | Wandsworth | London |
|---|---|---|
| Householder approval rate | 91.3% | 83.0% |
| Householder decisions made | 3,107 | 77,680 |
| Decided inside eight weeks | 85.8% | — |
| Decided beyond thirteen weeks | 5.9% | — |
| Applications withdrawn before decision | 9.4% | 7.4% |
| Mansard applications in the Datahub | 2,310 | 87% approved |
| Conservation areas | 46 covering 1,061 ha | 1,141 across London |
Sources: decision figures from MHCLG District Planning Application Statistics (PS1 and PS2), twelve quarters to March 2026; the Datahub row from the Planning London Datahub, retrieved 15 August 2026, phrase-matched and comparable within Wandsworth only; conservation areas from planning.data.gov.uk, retrieved 1 September 2026. Open Government Licence v3.0.
Services available in WandsworthA construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessib...
Every loft type across every Wandsworth roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regu...
The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical p...
Wandsworth's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...
Turn your unused Wandsworth garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulati...
Full architectural technology service for basement digs and cellar conversions in Wandsworth — structural underpinning design, waterproofing...
Chartered structural engineer calculations for every residential intervention in Wandsworth — steel beams, lintels, pad foundations, wall re...
Measured surveys across Wandsworth — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...
End-to-end Party Wall Act 1996 service for Wandsworth — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordina...
London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Wandsworth property,...


Housing stock: Extensive Victorian terraced streets — the classic London side-return extension opportunity; Edwardian villas around the commons; 1930s semi-detached in Southfields.
Character: Family-oriented, high side-return extension and loft conversion rates; planning department experienced with Victorian terrace modifications.
Notable conservation areas: Wandsworth Common, Clapham Common West, Tonsley, Magdalen Park, Nightingale Triangle
Article 4 Direction: Article 4 for HMO conversions covering the whole borough.

A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessib...
Every loft type across every Wandsworth roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regu...
The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical p...
Wandsworth's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...
Turn your unused Wandsworth garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulati...
Full architectural technology service for basement digs and cellar conversions in Wandsworth — structural underpinning design, waterproofing...
Chartered structural engineer calculations for every residential intervention in Wandsworth — steel beams, lintels, pad foundations, wall re...
Measured surveys across Wandsworth — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...
End-to-end Party Wall Act 1996 service for Wandsworth — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordina...
London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Wandsworth property,...
Leave your number and an Architectural technologist covering Wandsworth will call you back within 30 minutes during working hours.

Every Wandsworth postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. Wandsworth fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| SW15 | Putney / Roehampton | Edwardian terraces, Victorian villas, mansion blocks | A drawing package at an SW15 address in Putney / Roehampton is determined by Wandsworth Council under its own Local Plan policies for Putney / Roehampton. |
| SW17 | Tooting / Earlsfield | Edwardian terraces | SW17 straddles a boundary: Tooting / Earlsfield addresses fall to Wandsworth Council or Merton Council, so confirm which authority validates the drawing package before submitting SW17 drawings. |
| SW18 | Wandsworth / Earlsfield / Southfields | Victorian villas and terraces | SW18 covers Wandsworth / Earlsfield / Southfields only; Wandsworth Council handles the drawing package, and Wandsworth / Earlsfield / Southfields case officers apply the SW18 conservation-area map. |
| SW4 | Clapham | Victorian terraces, Edwardian villas | A drawing package in Clapham may land with Lambeth Council or Wandsworth Council — SW4 crosses the boundary, and the SW4 policies map decides it street by street. |
| SW8 | South Lambeth / Nine Elms | Victorian terraces, new-build apartments | SW8 straddles a boundary: South Lambeth / Nine Elms addresses fall to Lambeth Council or Wandsworth Council, so confirm which authority validates the drawing package before submitting SW8 drawings. |
| 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. |
| SW19 | Wimbledon / Colliers Wood | Victorian villas, Edwardian terraces | A drawing package in Wimbledon / Colliers Wood may land with Merton Council or Wandsworth Council — SW19 crosses the boundary, and the SW19 policies map decides it street by street. |
| SW11 | Battersea / Clapham Junction | Victorian terraces, mansion blocks | A drawing package at an SW11 address in Battersea / Clapham Junction is determined by Wandsworth Council under its own Local Plan policies for Battersea / Clapham Junction. |
Roof pitch, wall build-up and plot depth change every few Wandsworth streets, and each one changes what a drawing package can achieve at that address.
How designation changes a Wandsworth drawing package: Wandsworth Council maintains 45 conservation areas, including Wandsworth Common, Clapham Common West, Tonsley. Inside any of them a Wandsworth drawing package cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Magdalen Park sets the tone for Wandsworth casework.
Article 4 and your Wandsworth drawing package: Article 4 for HMO conversions covering the whole borough. At a SW11 address that matters twice over, because Wandsworth Council applies the direction unevenly across Wandsworth — we read the Wandsworth policies map for the exact SW11 address before quoting architectural drawings.
What Wandsworth 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 Wandsworth 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 Wandsworth 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.
Over the 12 quarters from 2023 Q2 to 2026 Q1, Wandsworth decided 3,107 householder planning applications and approved 91.3% of them — 8.3 percentage points above the London average of 83%. That places Wandsworth 4th of 32 London boroughs on householder approval rate. These are decisions the council reported to MHCLG, not our own sample.
| Measure | Wandsworth | Context |
|---|---|---|
| Householder applications decided | 3,107 | 77,680 across London |
| Householder approval rate | 91.3% | 83% London average |
| Decided within 8 weeks | 85.8% | 28th fastest of 32 boroughs |
| Took longer than 13 weeks | 5.9% | the applications that overran the statutory target |
| Minor dwellings approval rate | 87.7% | new-build and conversion schemes under 10 units |
| All application types | 89.5% | across 6,306 decisions |
| Certificates of lawfulness issued | 975 | confirmations that work was permitted development |
Speed matters as much as the odds. Wandsworth decided 85.8% of householder applications inside the eight-week statutory period and let 5.9% run past thirteen weeks. A drawing package that is complete and correctly described at validation is the part of that timeline you control; the rest belongs to the council's caseload.
Source: MHCLG District Planning Application Statistics (PS1 and PS2), 2023 Q2 to 2026 Q1, published quarterly by the Ministry of Housing, Communities and Local Government. Counts are decisions made in the window, not applications submitted. Contains public sector information licensed under the Open Government Licence v3.0.
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Get my free quote →We've delivered architectural drawings across every part of Wandsworth. Each neighbourhood has its own conservation context and dominant housing stock — click through for area-specific guidance.