Barnet, London
Planning drawings in Barnet
Planning drawings for a Barnet house start at £745 including VAT. The council decided 1,361 householder applications in the latest year, and its officers read each one against a two-part design guide, so the drawings need to answer that guide directly.
From £745 (VAT included)
- MCIAT chartered
- £2m PI insured
- LABC Partnered
- Fixed fees, VAT included
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The guidance Barnet applies to planning drawings
Barnet's plan is the Barnet Local Plan 2021-2036, adopted in 2,025. For home projects the working document is the Sustainable Design and Development Guidance SPD, Part 4: Guidance on residential extensions and alterations, which sits beside the Sustainable Design and Development Guidance SPD, Part 2: The seven features of good design. Between them they cover how an extension meets the original house, how a roof alteration reads from the street, and what an addition does to a neighbour's outlook.
We check the proposed elevations against the current text of both parts, not against an older approval down the road, because a precedent granted under earlier policy can carry less weight.
In practice we annotate the sheets with the dimensions officers look for: depth beyond the neighbouring building line, height at the boundary and the setback from any flank wall. A reader should find the answer on the sheet without writing to us for it.

Local figures for Barnet
| Measure | Value | Period | Source |
|---|---|---|---|
| Conservation areas | 16 named conservation areas published by the council | — | planning.data.gov.uk |
| Article 4 directions | 15 Article 4 directions published by the council | — | planning.data.gov.uk |
| Listed building entries | 651 list entries (Historic England, within the LPA boundary) | — | planning.data.gov.uk |
| Householder decisions | 1,361 decisions | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications granted | 80.2 % | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications decided in time | 95.1 % decided within 8 weeks or an agreed extended period | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Tree preservation orders | 718 tree preservation orders published by the council | — | planning.data.gov.uk |
| Green Belt share of the council area | 28 % of council area covered by green-belt polygons | — | planning.data.gov.uk |
| Householder appeals decided by the Planning Inspectorate | 413 householder appeals decided | decision dates 1 Jul 2021 to 30 Jun 2026 | assets.publishing.service.gov.uk |
| Householder appeals allowed | 50.6 % of householder appeals allowed | decision dates 1 Jul 2021 to 30 Jun 2026 | assets.publishing.service.gov.uk |
| Householder: alterations/extensions to a single dwellinghouse, from 1 Apr 2026 | 548 GBP | — | ribblevalley.gov.uk |
A blank value means the figure has not been published, not that there are none. Check your own address with the council.
Which application your project needs
The usual route for a house; flats and listed buildings follow other rules.
- A · Lawful Development Certificate decision
- 8 weeks
- B · Prior approval decision
- 42 days
- C · Householder decision
- 8 weeks
Barnet's decisions and appeals in numbers
In its latest twelve months Barnet granted 80.2 per cent of the 1,361 householder applications it decided, and 95.1 per cent were decided on time or within an agreed extension.
The appeal record adds a second view. Of 413 householder appeals decided by the Planning Inspectorate over five years, 50.6 per cent were allowed. That tells us a refusal here is sometimes overturned, though an appeal takes months and costs money, so a clean first submission is the better plan.
These are borough-wide figures from public datasets. They describe the past, and none of them predicts what happens to your application.
Trees, green belt and heritage in Barnet
Barnet has 718 tree preservation orders, and a protected tree near an extension changes what can be built and where. Our constraints check looks for them before any design work, and the block plan marks root protection where it applies.
Green belt polygons cover 28 per cent of the borough. Houses there face tighter rules on the size of extensions and outbuildings.
The council publishes 16 conservation areas and 15 Article 4 directions, and Historic England lists 651 entries in the borough. Inside a conservation area, permitted development is cut back and a loft enlargement needs an application.
Choosing the route for a Barnet home
52.5 per cent of Barnet households live in a house or bungalow, so rear extensions, loft conversions and garage conversions are common projects. For many of these, permitted development is available, and a Lawful Development Certificate in Barnet puts that in writing.
When a project exceeds the limits, or the address sits in a protected area, a householder application follows. The council fee is £548, and the council has 8 weeks to decide unless you agree more time.
Barnet also has an Article 4 direction for houses in multiple occupation, so a plan to let by the room is assessed separately.
What you receive and what it costs
Each set holds existing and proposed plans, elevations and sections, a location plan and a block plan, with scale and north stated. The price starts at £745, VAT included and fixed before you commit.
A second chartered technologist reads every sheet before submission. If the council asks for changes we redraw at no charge until approval, though we cannot promise a decision.
Where to go next in Barnet
The borough overview is at architectural drawings in Barnet. If the council refuses, our planning appeals in Barnet service takes over. For the technical stage, see building regulations drawings.
Compare neighbouring rules in Hertsmere, Enfield and Harrow, or read the national route on planning drawings in London.
What you receive


Related pages
Other services in Barnet
Questions
Which guidance does Barnet use for house extensions?
Mainly the Sustainable Design and Development Guidance SPD, Part 4: Guidance on residential extensions and alterations, read with the Sustainable Design and Development Guidance SPD, Part 2: The seven features of good design. We draw against the current versions.
How many householder applications does Barnet grant?
In the latest twelve months it granted 80.2 per cent of 1,361 householder decisions. That is a borough-wide record and says nothing about a single house.
Can a tree stop my Barnet extension?
It can shape it. The borough has 718 tree preservation orders, and building near a protected tree needs care. We check this in the constraints step.
How much are planning drawings in Barnet?
From £745 including VAT, fixed up front. The council's own fee is paid to the council.
Sources and dates
- planning.data.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- assets.publishing.service.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- assets.publishing.service.gov.uk, retrieved
- ribblevalley.gov.uk, retrieved
- barnet.gov.uk, retrieved
- barnet.gov.uk, retrieved
- nomisweb.co.uk, retrieved
- legislation.gov.uk, retrieved
- legislation.gov.uk, retrieved
- legislation.gov.uk, retrieved
- Contains public sector information licensed under the Open Government Licence v3.0.
- Contains OS data © Crown copyright and database right 2026.
- Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
- Contains Historic England data © Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026.

Tell us about your property.
We check the constraints, then send a fixed fee. Messages before 3pm get a reply the same working day.