MCIAT chartered architectural technologists covering Brentwood and the wider Essex commuter belt from our London base. Planning permission, building regulations, loft conversions, extensions and mansard roofs, 30% below typical London architect rates.
National ones, decided by Brentwood Borough Council. The fee is £548 for a householder application and the permitted development limits match London’s. Most of the borough sits in the Metropolitan Green Belt, where an extension must not be disproportionate to the original building.
| Rule or fee | Value | Source |
|---|---|---|
| Householder planning application | £548 | Statutory, England 2026 |
| Lawful development certificate | £274 | Statutory |
| Larger home extension prior approval | £249 | Statutory |
| Rear extension, terrace or semi | 3m, or 6m under prior approval | GPDO 2015, Class A |
| Added roof volume for a loft | 40 m³ terrace, 50 m³ semi or detached | GPDO 2015, Class B |
| Extension in the Green Belt | must not be disproportionate to the original | NPPF |
| Inside a conservation area | Class A side extensions and Class B removed | GPDO 2015, Article 2(3) |
Sources: the Town and Country Planning (Fees for Applications) (England) Regulations 2012 as amended, 2026 rates; the General Permitted Development (England) Order 2015, Schedule 2, Part 1, Classes A and B, and Article 2(3); the National Planning Policy Framework on Green Belt. Read at 1 September 2026. Green Belt designation does not itself remove permitted development rights; the disproportionate-addition test applies to applications, not to Class A work.
Local planning contextAffluent commuter town directly served by Elizabeth line since 2022, raising property values and densification pressure.
All householder planning applications in Brentwood are determined by Brentwood Borough Council. The council follows the National Planning Policy Framework and its own adopted Local Plan, supported by area-specific design guides and Supplementary Planning Documents.
Conservation areas: Brentwood Town Centre, Great Warley, Ingatestone and Blackmore are conservation areas. The Thorndon Park Registered Landscape is Grade II.
Policy quirks to watch: Brentwood is 89% Green Belt, so almost all growth must be either on previously-developed land or through the Local Plan's managed Green Belt release sites. Article 4 Directions apply at Thorndon Park and parts of Warley.
Typical housing in Brentwood includes victorian cottages in Brentwood High Street, 1930s semis across Warley and Hutton, and substantial executive detached homes in Shenfield, Ingatestone and the rural wards. This mix drives the types of projects we most often prepare drawings for here.
Five core services, all delivered by MCIAT chartered architectural technologists, all within our 50-mile service radius.
Full planning submission: existing/proposed plans, elevations, site plan, and Design & Access Statement.
Construction-detail drawings for your builder and Building Control submission.
Rear dormer, hip-to-gable, L-shape or mansard loft conversion drawings.
Single-storey, double-storey, wrap-around and side-return extension drawings.
Full mansard conversion drawings with structural and thermal detailing.
Every drawing is signed off by a Chartered Member of the Institute of Architectural Technologists. The same quality bar that applies to our central London projects applies to our Brentwood work.
We regularly submit to all M25 commuter-belt councils including Brentwood Borough Council. We research each council's Local Plan, design guides and recent decision history before we start drawing.
No mileage charges, no hourly rates, no surprises on the invoice.
Our submissions across the 33 London boroughs and the M25 commuter belt are prepared for council review before submission. This helps reduce avoidable resubmission risk and delay.
Two-storey side and rear extensions on Brentwood's 1930s semi-detached housing stock allow for a larger kitchen and dining area at ground floor and an additional bedroom and bathroom above. Brentwood Borough Council generally supports subordinate extensions that maintain the original house's form and street rhythm.
Wrap-around extensions and garage conversions on the larger detached houses in Brentwood are popular for creating open-plan family kitchens and home offices. These projects often combine planning permission, building regulations approval and structural calculations — all covered within our Complete package.
Sympathetic extensions to listed and historic homes require additional heritage input. For period properties in Brentwood, we prepare heritage impact statements, use traditional materials and maintain the original proportions that Brentwood Borough Council's conservation officer will expect to see.
Brentwood Borough Council application fees are charged separately at the statutory rate.
Planning permission drawings for Brentwood.
Planning + building regulations drawings for Brentwood.
Complex or listed-building projects in Brentwood.
Yes. Brentwood is well within our 50-mile service radius from our London office. We cover all Brentwood postcodes (CM13, CM14, CM15) for planning permission drawings, building regulations drawings, loft conversions, house extensions and mansard roofs. Brentwood is 20 miles from central London (35 min from London Liverpool Street (Elizabeth line)), so our team can comfortably visit for measured surveys and pre-application meetings with Brentwood Borough Council.
These prices are roughly 30% below typical London architect rates for the same scope of work. Brentwood Borough Council application fees are charged separately at the statutory rate (£548 for a householder planning application, £274 for a Lawful Development Certificate in 2026).
Yes, every project includes an in-person measured survey at your property in Brentwood. We typically combine the measured survey with an initial brief discussion on site, then return for pre-submission checks if needed. For projects that require pre-application meetings at Brentwood Borough Council, we attend on your behalf and include the call or meeting in the fee.
Yes. While our office is in London, our MCIAT chartered architectural technologists regularly submit to councils across the M25 commuter belt, including Brentwood Borough Council. We use the Planning Portal for submissions, so the process is identical regardless of which local planning authority handles your application. We research each council's Local Plan, design guides, and recent decision history before preparing your drawings so that the scheme aligns with their current approach.
The statutory target for a householder planning application is 8 weeks from validation. Brentwood Borough Council generally meets this target for straightforward applications, although conservation area or listed building consents can take longer. Pre-application advice typically takes 4–6 weeks. From initial instruction to final decision, expect 10–16 weeks for a typical residential project in Brentwood.
MCIAT chartered. council-ready drawing review.
