Brentwood, Essex
Architectural drawings in Brentwood
In Brentwood, 87 per cent of the borough is green belt, and the council points householders to the Essex Design Guide rather than its own extensions SPD. We are MCIAT chartered architectural technologists, and our architectural drawings for Brentwood homes start from £745 including VAT after a free check of your plot.
Fixed quote after a free constraints check
- MCIAT chartered
- £2m PI insured
- LABC Partnered
- Fixed fees, VAT included
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Brentwood in numbers
| Measure | Value | Period | Source |
|---|---|---|---|
| Green Belt share of the council area | 87 % of council area covered by green-belt polygons | — | planning.data.gov.uk |
| Conservation areas | 13 named conservation areas published by the council | — | planning.data.gov.uk |
| Listed building entries | 526 list entries (Historic England, within the LPA boundary) | — | planning.data.gov.uk |
| Heritage at Risk entries | 5 Heritage at Risk Register entries within the LPA boundary (Historic England) | — | planning.data.gov.uk |
| Householder decisions | 429 decisions | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications granted | 85.5 % | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Householder applications decided in time | 89.3 % decided within 8 weeks or an agreed extended period | 1 July 2025 - 30 June 2026 | assets.publishing.service.gov.uk |
| Households living in a house | 77.2 % of households living in a house or bungalow (detached, semi-detached or terraced) | Census 2021 | nomisweb.co.uk |
| Owner-occupied households | 71.9 % of households owner-occupied (owned outright or with mortgage/loan) | Census 2021 | nomisweb.co.uk |
| Larger home extension prior approvals granted | 3 decisions | 2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026) | assets.publishing.service.gov.uk |
| Larger home extension prior approvals refused | 4 decisions | 2025 Q2 to 2026 Q1 (1 Apr 2025 to 31 Mar 2026) | assets.publishing.service.gov.uk |
| Local plan | Brentwood Local Plan 2016-2033 | — | brentwood.gov.uk |
| Supplementary planning document | Brentwood Town Centre Design Guide SPD | 2019 | brentwood.gov.uk |
A blank value means the figure has not been published, not that there are none. Check your own address with the council.
Constraints check: Brentwood
What we check first on any Brentwood address. Counts are for the whole council area.
- A · Conservation areas
- 13 named conservation areas published by the council
- C · Listed building entries
- 526 list entries (Historic England, within the LPA boundary)
Brentwood is mostly green belt
With 87 per cent of the area designated, most Brentwood houses sit under green-belt policy, or close to it. Extensions there must not be disproportionate to the original building, and earlier additions count towards that limit.
We begin by rebuilding the original footprint from the survey and the planning history. A table on the drawing then compares original and proposed floor areas, which is the evidence the council looks for.
Houses just outside the designation are easier, but we still check, because boundaries on the map are drawn plot by plot.

Which design guidance applies
The development plan is the Brentwood Local Plan 2016-2033, adopted in 2,022. The council's planning guidance page lists no householder extensions or roof SPD, and instead points to the Essex Design Guide.
The only supplementary document on the council's list is the Brentwood Town Centre Design Guide SPD, which applies in the town centre, so most homes are judged on the local plan and the Essex guide.
That puts more weight on precedent, so we study recent decisions for similar houses in your area and attach the relevant ones to the design note.
The Essex Design Guide is a general document, so it needs interpreting for each house. We set out on the design note how the proposal responds to it, in plain terms the officer can tick off.
Heritage in Brentwood
Brentwood has 13 conservation areas. Historic England lists 526 buildings: 12 at Grade I, 28 at Grade II* and 482 at Grade II. A further 5 entries appear on the at-risk register.
A listed house needs listed building consent for most changes. If yours is on the list, tell us at the first call and we will explain the route.
Housing, ownership and values
The borough has 32,342 households. 77.2 per cent live in a house or bungalow and 71.9 per cent own their home.
The average price across all property types was £514,480, and a terraced house averaged £430,877. With most households owning their home, rear extensions, garage conversions and annexes are common requests.
Annexes and garden buildings need a clear statement of how they relate to the main house, and we draw that relationship out in plan.
On a larger plot the first question is rarely space. It is how much the council will accept against the original house, and that is what the design options test.
How Brentwood decides householder cases
The council decided 429 householder applications in the latest twelve months and granted 85.5 per cent. About 89.3 per cent were decided within eight weeks or an agreed extension.
For larger home extensions under prior approval the council granted 3 and refused 4, small numbers that show the route is rarely used.
These are the council's past figures, not a forecast for your plot.
Levy in Brentwood
The council's Brentwood CIL Charging Schedule sets £262.47/m² (all other areas); £157.48/m² (R03 Land North of Shenfield); £26.25/m² (R02 Land at West Horndon Industrial Estate); £0 (R01 Dunton Hills Garden Village); older people's housing £230.97/m². The rate depends on where the site is, so we confirm the charging area in the first conversation.
Brentwood is outside London, so the Mayor of London's levy does not apply.
Levy is usually a question for new homes and larger schemes rather than a small rear extension. We still note any liability in the next-steps pack, so a surprise does not arrive after the design is fixed.
Architectural drawings and other services in Brentwood
Typical starting points are planning drawings in Brentwood, house extension drawings in Brentwood and garage conversion plans in Brentwood. New homes on larger plots are covered by new build drawings in Brentwood.
For the surrounding area, see our pages for Epping Forest, Havering and Thurrock.
How a Brentwood job runs
A free address check, a fixed quote, a measured survey and a Revit model, then options. A second chartered technologist reviews each sheet before submission. We redraw for council comments at no further cost until approval.
What you receive


Services in Brentwood
Questions
Does Brentwood have its own extensions guide?
Not on the council's list of supplementary documents. It points to the Essex Design Guide, and we also draw against the Brentwood Local Plan 2016-2033.
How much are architectural drawings in Brentwood?
Householder planning drawings start at £745 including VAT, agreed before work begins. The council charges its own application fee separately.
Is my Brentwood house in the green belt?
Probably: 87 per cent of the borough carries the designation. We check your plot free.
How many conservation areas are there in Brentwood?
The council publishes 13. We check whether yours is one of them.
Sources and dates
- planning.data.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- planning.data.gov.uk, retrieved
- assets.publishing.service.gov.uk, retrieved
- nomisweb.co.uk, retrieved
- nomisweb.co.uk, retrieved
- assets.publishing.service.gov.uk, retrieved
- brentwood.gov.uk, retrieved
- brentwood.gov.uk, retrieved
- nomisweb.co.uk, retrieved
- publicdata.landregistry.gov.uk, retrieved
- brentwood.gov.uk, retrieved
- brentwood.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.