MCIAT chartered architectural technologists covering Sevenoaks and the wider Kent 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 Sevenoaks District Council. The fee is £548 for a householder application and the permitted development limits match London’s. Most of the district lies in the Green Belt and much of it in the Kent Downs National Landscape, which removes Class A side extensions and cladding.
| 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 |
| Inside a National Landscape | Class A side extensions and cladding removed | GPDO 2015, Article 2(3) |
| Inside the Green Belt | extension must not be disproportionate | NPPF |
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 does not remove permitted development rights; Article 2(3) land does, and the two overlap across much of Sevenoaks.
Local planning contextHistoric town beside Knole Park, one of the most expensive property markets outside London.
All householder planning applications in Sevenoaks are determined by Sevenoaks District 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: Sevenoaks Town, Riverhead, Kippington and Seal are conservation areas. The Kent Downs AONB covers the majority of the district.
Policy quirks to watch: Sevenoaks district is 93% Green Belt and 60% Kent Downs AONB, a combination that makes almost all rural development extremely difficult. Knole Park is a Grade I registered landscape and a Scheduled Monument.
Typical housing in Sevenoaks includes georgian and Regency townhouses along the High Street, Victorian villas in St Johns, Edwardian and interwar semis, and substantial detached homes on the Kent Downs. 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 Sevenoaks work.
We regularly submit to all M25 commuter-belt councils including Sevenoaks District 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 Sevenoaks's 1930s semi-detached housing stock allow for a larger kitchen and dining area at ground floor and an additional bedroom and bathroom above. Sevenoaks District 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 Sevenoaks 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 Sevenoaks, we prepare heritage impact statements, use traditional materials and maintain the original proportions that Sevenoaks District Council's conservation officer will expect to see.
Sevenoaks District Council application fees are charged separately at the statutory rate.
Planning permission drawings for Sevenoaks.
Planning + building regulations drawings for Sevenoaks.
Complex or listed-building projects in Sevenoaks.
Yes. Sevenoaks is well within our 50-mile service radius from our London office. We cover all Sevenoaks postcodes (TN13, TN14, TN15) for planning permission drawings, building regulations drawings, loft conversions, house extensions and mansard roofs. Sevenoaks is 22 miles from central London (28 min from London Charing Cross), so our team can comfortably visit for measured surveys and pre-application meetings with Sevenoaks District Council.
These prices are roughly 30% below typical London architect rates for the same scope of work. Sevenoaks District 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 Sevenoaks. 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 Sevenoaks District 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 Sevenoaks District 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. Sevenoaks District 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 Sevenoaks.
MCIAT chartered. council-ready drawing review.
