A corner of Victorian houses on Cicada Road in Wandsworth with bay windows, one with a roof dormer, in warm evening light and a garage at the right
Floor plan drawings, pencil sketches of a house, a scale rule and a protractor spread across a desk
Photo: Tima Miroshnichenko / Pexels

Basement planning drawings · London Borough of Wandsworth

Basement planning drawings in Wandsworth, from £1,855 fixed

Wandsworth's Policy LP6 keeps a basement to one storey and half the rear garden, and sets a front-garden rule for lightwells: at least half the original depth kept, or two metres in a conservation area if that is more. Basement rooms need natural light and air, and a metre of soil above.

Basementfrom £1,705 drawings + £150 survey (£1,855 total)
Council fee£548
Get your fixed feeFFP-01 · Rev A
Our fixed fee£795
Council fee, paid to your council£548
Our fee + council fee£1,343
CoverageAll 33 boroughs

Householder application fee, paid to your council at submission.

Plus the Planning Portal's own charge if the application goes through the Portal: up to £149 including VAT, depending on the application type, and some types have none (source).

Get this fee in writing

or email hello@fixedfeeplans.co.uk

No obligation. Nothing is sent until you ask; your enquiry comes to us and nowhere else.

Starts at£150
Boroughs33/33
Stages5

Photo: Derek Harper / Wikimedia Commons, CC BY-SA 2.0

Fixed fee, in writing

Tell us about your project

Send the postcode and what you want to build, and add photos or old plans if you have them. We reply with the fee in writing and the payment stages set out in full.

Ask for your fixed fee in writing

Name and email are required. Everything else helps us price it, but is optional.

Your enquiry goes to us and nowhere else. It is never syndicated or sold. See our privacy notice.

Two Victorian terraced houses on a London street, one painted white and one in yellow stock brick, with bay windows
A London terrace. Photo: Huy Phan / Pexels.

What Wandsworth Council asks of a basement

From the council's Wandsworth Local Plan 2023-2038, Policy LP6 (Basements and Subterranean Developments) (adopted adopted 19 July 2023).

  • Policy LP6 permits a new basement only where it results in no more than one storey of basement accommodation below ground level and, for homes, extends to no more than 50% of the existing rear garden land or other undeveloped garden area. (source, checked 26 October 2026)
  • Lightwells within Conservation Areas must retain at least two metres or 50% (whichever is greater) of the original front garden depth, and no less than 50% of the original front garden depth elsewhere in the borough. (source, checked 26 October 2026)
  • LP6 requires natural ventilation and lighting where habitable accommodation is provided, and a minimum of 1 metre of naturally draining permeable soil above any part of the basement beneath a garden, with a minimum 200mm drainage layer. (source, checked 26 October 2026)
  • A basement must include a positive pumped device (or equivalent) against sewer flooding, and the plan asks applicants to show the location of the device on the drawings submitted with the application. (source, checked 26 October 2026)
  • The council says the Local Plan was adopted on 19 July 2023, and that a Partial Review adopted on 4 March 2026 supersedes six named policies within it. (source, checked 26 October 2026)

What Wandsworth basement drawings have to show

A Wandsworth basement set measures the rear garden excluding the original footprint and any permanent structures, then holds the basement to half of it. At the front we measure the original garden depth and draw any lightwell so that at least half of it is kept, or two metres where that is more, if the house is in a conservation area.

Because LP6 asks for natural light and air to habitable rooms, the plans show where each basement room gets its window or lightwell. The sections show one storey, the metre of soil and the 200mm drainage layer, and we mark the pumped sewer device on the drawings, as the plan asks.

PS2 · at a glance

Wandsworth: 977 householder decisions

Wandsworth
Approvals, prior approvals included91.9%

898 of 977 granted. London: 85.8%.

Decided within 8 weeks90.9%

597 of 657 applications, prior approvals excluded.

Source: MHCLG PS2, 1 July 2025 to 30 June 2026. Dark tick: London.
Two hands holding a printed floor plan over a desk of drawings, with a pen and notebook beside it
Checking the drawings with you before anything goes to the council. Photo: Tima Miroshnichenko / Pexels.

What it costs in Wandsworth

  • Basement planning drawings: from £1,705 drawings + £150 survey (£1,855 total), plus £548 to Wandsworth Council.
  • Householder application fee, paid to your council; basement impact and structural reports are by others.

Basement planning drawings across London · Wandsworth planning rules · every price

Answers

Wandsworth basement questions

How big can a lightwell be in Wandsworth?
In a conservation area, a front lightwell must leave at least two metres or half of the original front garden depth, whichever is greater. Elsewhere in Wandsworth it must leave no less than half of the original front garden depth. Policy LP6 also expects the basement rooms it serves to be lit and ventilated naturally.
How much of my garden can a basement cover in Wandsworth?
No more than 50% of the existing rear garden land or other undeveloped garden area, not counting the footprint of the original building or other permanent structures. Policy LP6 also allows only one storey of basement below ground and asks for one metre of permeable soil and a 200mm drainage layer above the part under the garden.
Does the Wandsworth basement policy still apply after the 2026 review?
Yes. The Wandsworth Local Plan was adopted on 19 July 2023, and the Partial Review adopted on 4 March 2026 replaced six named policies, none of them LP6. So Policy LP6 Basements and Subterranean Developments is still the test the council applies to a new or extended basement, and we draw to it.

Start with £150

Your fixed fee is already on this page.

Tell us the postcode and what you want to build. We confirm the fee in writing and book the survey.

Get my fixed fee020 7131 9703
01
Measured surveyWithin five working days
£150
02
Existing drawingsThe building as it stands
£175
03
Proposed drawingsYour scheme, revised until right
£225
04
Planning application packForms, statements, OS plans
£125
05
Submission and agent servicePortal submission, queries handled
£120
Total, planning application£795
Get my fixed fee