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Open-plan kitchen extension with a large island, timber cabinetry and pendant lighting above a breakfast bar
SW17 · Tooting · Wandsworth

Planning and building regulation drawings in Tooting (SW17)

Ask two homeowners in SW17 what it takes to get an extension approved and you can get two very different answers, and both can be right. Most of the postcode is Edwardian terrace, built to a pattern that repeats along Tooting High Street, Mitcham Road and Longley Road, and Wandsworth has seen that pattern so often that a well-drawn rear extension or loft conversion moves through the system without surprises. Tucked into that same postcode, though, sits the Totterdown Fields estate, the low-density cottage housing the London County Council built from 1903 as its first estate of this kind anywhere in the capital. It looks unassuming from the street, but the council treats it as a heritage asset, and that changes the entire brief.

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We treat the two contexts as separate jobs from the moment a client calls. On the ordinary terraced streets, a side-return or a loft dormer is often a matter of confirming permitted development rights and producing accurate drawings that match what Wandsworth expects to see. On Totterdown Fields, the starting question is different: what would the estate's original architects have done, and how far can a modern extension go before it stops reading as part of that pattern. Roof pitches, window proportions and boundary treatments were designed as a set here, not chosen house by house, so a change that looks trivial on Mitcham Road can be the whole application on the estate. Garden depths on parts of the estate are smaller than on the surrounding terraces too, which puts a practical ceiling on how far back a rear extension can reasonably go before it eats the outdoor space that made the estate work in the first place. Knowing which street a client is on, before a single line is drawn, is most of the job.

Planning in Tooting: what to know before you apply

Wandsworth deals with Tooting through two lenses. Away from Totterdown Fields, the borough's terraced-housing expectations apply much as they do across its other Victorian and Edwardian streets between the commons: side-returns and rear extensions are common enough that the council assesses them against a settled pattern, and drawings that match that pattern tend to move through validation cleanly. Totterdown Fields sits under its own conservation area and Article 4 direction, which strips out permitted development rights for anything visible from the street: windows, doors, roofing, porches, hard surfacing, boundary walls and fencing, and demolition all need full planning permission rather than a permitted development check. That means more drawings, more detail on materials, and a design that answers directly to the estate's original character rather than to a generic terrace standard. We confirm which side of that line a property sits on before quoting or designing.

Applications are decided by London Borough of Wandsworth its planning pages.

Check your route

Does your Tooting project need planning permission?

Route check · Tooting (SW17)

Listed building?
Conservation area?
Likely permitted development — no planning applicationNeeds checking
  • A single-storey rear extension up to 4 m deep on a detached house, or 3 m on any other house, is Class A permitted development subject to the height and materials conditions.
  • An Article 4 direction applies here and may withdraw this freedom — the schedule must be checked before relying on it.
  • One or more constraints are unknown — we check the council's registers as part of the free appraisal.
  • Where permitted development applies, a lawful development certificate proves it for lenders and buyers.

Sources: GPDO 2015, Schedule 2, Part 1 · Planning Portal — common projects · Building Regulations 2010 — when approval is needed

This is a first-pass indication from the national rules, not planning advice for your property. Your council's registers, any Article 4 schedule and the exact dimensions decide it — the free appraisal checks all three before we recommend a route.

Confirm it with a free appraisal

Tooting (SW17) in numbers

What London Borough of Wandsworth has decided, and what SW17 is built of — the two facts that shape every job here.

Householder planning decisions — London Borough of Wandsworth

Tooting (SW17) applications are decided by London Borough of Wandsworth; these are its published householder figures for the last four quarters.

Householder applications decided2025 Q2 to 2026 Q1970
Granted895
Refused75
Grantedof 970 decisions · England 90%92%
Decided within 8 weeksof 656, excluding prior approvals92%

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Permitted development prior approvals — London Borough of Wandsworth

How the larger-home-extension route has fared with London Borough of Wandsworth, which decides SW17 notifications.

Larger home extension prior approvals — not required2024 Q2 to 2026 Q161
Prior approval granted27
Prior approval refused18
Grantedof 45 determined60%

Source: Ministry of Housing, Communities and Local Government (PS1 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Planning appeals — London Borough of Wandsworth

Refusals in SW17 can be appealed to the Planning Inspectorate; this is London Borough of Wandsworth's householder appeal record.

Householder appeals determined2021–2026195
Allowed70
Allowedof 195 · England 36%36%

Source: Planning Inspectorate appeals casework. Open Government Licence v3.0 Extracted 2026-09-22.

Conservation areas and Article 4 directions — London Borough of Wandsworth

Register counts for London Borough of Wandsworth. A count describes what the council has published, never a rank against another council.

Conservation areas in the register45 dated, 1969–202346

Source: MHCLG Planning Data Platform. Open Government Licence v3.0 Extracted 2026-09-22.

What SW17 is built of

Residential building form across Tooting (SW17), from 475 classified buildings — the fact that decides party walls, side returns and loft headroom before any policy does.

Attached on more than one side73%
Attached on one side25%
Detached2%
Median building footprint63 m²
Addresses per buildingAbove about 2 means flats and maisonettes dominate1.9
Buildings classified475

Source: Ordnance Survey National Geographic Database (derived statistics). Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Extracted 2026-09-22.

  1. Day 0Measured survey of your Tooting property — or your existing plans if you have them.
  2. About 7 daysDrawings issued for your approval. Free redraws until you are happy.
  3. SubmissionWe validate against London Borough of Wandsworth’s checklist and submit on your behalf.
  4. Council: 8-week targetHouseholder applications carry an 8-week statutory target. London Borough of Wandsworth decided 92% of 656 recent householder applications inside it.

Source: Ministry of Housing, Communities and Local Government (PS2 district planning application statistics). Open Government Licence v3.0 Extracted 2026-09-22.

Projects in SW17

Drawings we prepare in Tooting

Looking for something else? Every topic we cover is at /topics.

Neighbourhoods

Streets and neighbourhoods in SW17

FAQ

Tooting (SW17) — FAQs

How do I know if my house is inside Totterdown Fields?+
The estate is a distinct pocket of low, cottage-style housing rather than the taller terraces closer to Tooting High Street, and its boundary doesn't always follow the lines you'd guess from the street pattern. We check the conservation area boundary for the exact address before giving any advice, because it decides whether the project needs full planning permission or can proceed as permitted development.
Can I still get a decent-sized rear extension on Totterdown Fields?+
Usually something scaled back from what a standard Tooting terrace could take. Several plots on the estate were laid out with shorter gardens, so Wandsworth weighs extension depth against how much garden is left afterwards, not just against a fixed rule. We look at the specific plot and propose a scale the council is realistically going to approve, rather than guessing and losing time on a refusal.
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