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Wandsworth Council

Architectural technology in Wandsworth

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.

Wandsworth at a glance

Planning authority
Wandsworth Council
Population
329,000
Conservation areas
45
Article 4 Direction
Yes — HMO and more
Postcodes
SW8, SW11, SW12, SW15, SW17, SW18, SW19
Typical housing
Extensive Victorian terraced streets — the classic London side-return extension opportunity

Architectural technologist reviewing planning drawings — architectural drawings in Wandsworth

What does Wandsworth approve?

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.

MeasureWandsworthLondon
Householder approval rate91.3%83.0%
Householder decisions made3,10777,680
Decided inside eight weeks85.8%
Decided beyond thirteen weeks5.9%
Applications withdrawn before decision9.4%7.4%
Mansard applications in the Datahub2,31087% approved
Conservation areas46 covering 1,061 ha1,141 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 Wandsworth

Every architectural service in Wandsworth — one chartered team.

Planning Drawings in Wandsworth

Building Regulations Drawings in Wandsworth

A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessib...

Loft Conversions in Wandsworth

Every loft type across every Wandsworth roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regu...

House Extensions in Wandsworth

The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical p...

Mansard Roof Extensions in Wandsworth

Wandsworth's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...

Garage Conversions in Wandsworth

Turn your unused Wandsworth garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulati...

Basement Conversions in Wandsworth

Full architectural technology service for basement digs and cellar conversions in Wandsworth — structural underpinning design, waterproofing...

Structural Calculations in Wandsworth

Chartered structural engineer calculations for every residential intervention in Wandsworth — steel beams, lintels, pad foundations, wall re...

Measured Building Surveys in Wandsworth

Measured surveys across Wandsworth — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...

Party Wall Services in Wandsworth

End-to-end Party Wall Act 1996 service for Wandsworth — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordina...

Rear Dormer Loft Conversions in Wandsworth

London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Wandsworth property,...

Wandsworth planning context

Planning in Wandsworth

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.

Areas within Wandsworth

Drawings across Wandsworth by area

Architectural technology in Wandsworth — a London terraced street of the type we survey
A london terraced street of the type we survey — architectural technology in Wandsworth.
Nearby boroughs

Boroughs adjacent to Wandsworth

Victorian terraced street in Clapham SW11
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All services in Wandsworth

What we do in Wandsworth

Planning Drawings in Wandsworth

Building Regulations Drawings in Wandsworth

A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessib...

Loft Conversions in Wandsworth

Every loft type across every Wandsworth roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regu...

House Extensions in Wandsworth

The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical p...

Mansard Roof Extensions in Wandsworth

Wandsworth's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...

Garage Conversions in Wandsworth

Turn your unused Wandsworth garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulati...

Basement Conversions in Wandsworth

Full architectural technology service for basement digs and cellar conversions in Wandsworth — structural underpinning design, waterproofing...

Structural Calculations in Wandsworth

Chartered structural engineer calculations for every residential intervention in Wandsworth — steel beams, lintels, pad foundations, wall re...

Measured Building Surveys in Wandsworth

Measured surveys across Wandsworth — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...

Party Wall Services in Wandsworth

End-to-end Party Wall Act 1996 service for Wandsworth — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordina...

Rear Dormer Loft Conversions in Wandsworth

London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Wandsworth property,...

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An architectural technologist checking a printed set of house drawings, marking a proposed elevation in red — architectural technology in Wandsworth
Every set is checked line by line against the validation checklist before it leaves the office.

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

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.

PostcodeAreaDominant stockWhat it means for a drawing package
SW15Putney / RoehamptonEdwardian terraces, Victorian villas, mansion blocksA drawing package at an SW15 address in Putney / Roehampton is determined by Wandsworth Council under its own Local Plan policies for Putney / Roehampton.
SW17Tooting / EarlsfieldEdwardian terracesSW17 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.
SW18Wandsworth / Earlsfield / SouthfieldsVictorian villas and terracesSW18 covers Wandsworth / Earlsfield / Southfields only; Wandsworth Council handles the drawing package, and Wandsworth / Earlsfield / Southfields case officers apply the SW18 conservation-area map.
SW4ClaphamVictorian terraces, Edwardian villasA 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.
SW8South Lambeth / Nine ElmsVictorian terraces, new-build apartmentsSW8 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.
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.
SW19Wimbledon / Colliers WoodVictorian villas, Edwardian terracesA 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.
SW11Battersea / Clapham JunctionVictorian terraces, mansion blocksA 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.

What changes about a drawing package in each part of Wandsworth?

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 do conservation areas and Article 4 affect a drawing package in Wandsworth?

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.

Which neighbouring authorities border Wandsworth?

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.

What are the chances of approval in Wandsworth?

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.

91.3%of householder applications approved
2,836approved in Wandsworth
271refused over the same period
85.8%decided within 8 weeks
Wandsworth planning decisions, 2023 Q2 to 2026 Q1
MeasureWandsworthContext
Householder applications decided3,10777,680 across London
Householder approval rate91.3%83% London average
Decided within 8 weeks85.8%28th fastest of 32 boroughs
Took longer than 13 weeks5.9%the applications that overran the statutory target
Minor dwellings approval rate87.7%new-build and conversion schemes under 10 units
All application types89.5%across 6,306 decisions
Certificates of lawfulness issued975confirmations 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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Neighbourhoods we cover in Wandsworth

11 Wandsworth neighbourhoods

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.

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