Planning drawings, building regulations, loft conversions, house extensions and mansards — delivered across Bromley by MCIAT chartered technologists with deep knowledge of Bromley Council's policies.
A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessib...
Every loft type across every Bromley roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regu...
The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical p...
Bromley's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...
Turn your unused Bromley garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulati...
Full architectural technology service for basement digs and cellar conversions in Bromley — structural underpinning design, waterproofing...
Chartered structural engineer calculations for every residential intervention in Bromley — steel beams, lintels, pad foundations, wall re...
Measured surveys across Bromley — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...
End-to-end Party Wall Act 1996 service for Bromley — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordina...
London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Bromley property,...


Housing stock: Large 1930s detached and semi-detached in Chislehurst and Bickley; Edwardian in Beckenham; Victorian in Bromley town; Metropolitan Green Belt covers significant rural-fringe land.
Character: Largest London borough by area; substantial Green Belt; conservation areas in most town centres; generally permissive elsewhere.
Notable conservation areas: Bromley Town, Chislehurst, Beckenham, Keston, Bickley

A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessib...
Every loft type across every Bromley roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regu...
The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical p...
Bromley's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...
Turn your unused Bromley garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulati...
Full architectural technology service for basement digs and cellar conversions in Bromley — structural underpinning design, waterproofing...
Chartered structural engineer calculations for every residential intervention in Bromley — steel beams, lintels, pad foundations, wall re...
Measured surveys across Bromley — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...
End-to-end Party Wall Act 1996 service for Bromley — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordina...
London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Bromley property,...
Leave your number and an Architectural technologist covering Bromley will call you back within 30 minutes during working hours.

Every Bromley postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. Bromley fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| BR4 | West Wickham | 1930s semi-detached | A drawing package at an BR4 address in West Wickham is determined by Bromley Council under its own Local Plan policies for West Wickham. |
| BR5 | Orpington / Petts Wood | 1930s semi-detached | BR5 covers Orpington / Petts Wood only; Bromley Council handles the drawing package, and Orpington / Petts Wood case officers apply the BR5 conservation-area map. |
| BR6 | Orpington | 1930s semi-detached | Orpington sits wholly inside BR6, so Bromley Council validates every drawing package submitted from an BR6 address. |
| BR7 | Chislehurst | 1930s detached, Edwardian villas | BR7 covers Chislehurst only; Bromley Council handles the drawing package, and Chislehurst case officers apply the BR7 conservation-area map. |
| BR8 | Swanley | Large 1930s detached and semi-detached in Chislehurst and Bickley; Edwardian in Beckenham; Victorian in Bromley town; Metropolitan Green Belt covers significant rural-fringe land | Swanley sits wholly inside BR8, so Bromley Council validates every drawing package submitted from an BR8 address. |
| TN16 | Biggin Hill / Downe | 1930s semi-detached | Biggin Hill / Downe sits wholly inside TN16, so Bromley Council validates every drawing package submitted from an TN16 address. |
| SE9 | Eltham / Mottingham | 1930s semi-detached, post-war flats | A drawing package in Eltham / Mottingham may land with Greenwich Council or Bromley Council — SE9 crosses the boundary, and the SE9 policies map decides it street by street. |
| SE12 | Lee / Grove Park | Large 1930s detached and semi-detached in Chislehurst and Bickley; Edwardian in Beckenham; Victorian in Bromley town; Metropolitan Green Belt covers significant rural-fringe land | SE12 straddles a boundary: Lee / Grove Park addresses fall to Lewisham Council or Bromley Council, so confirm which authority validates the drawing package before submitting SE12 drawings. |
Roof pitch, wall build-up and plot depth change every few Bromley streets, and each one changes what a drawing package can achieve at that address.
Bromley conservation designations: there are 48 across Bromley Council, Beckenham, Keston, Bickley among them. Designation costs a Bromley owner the permitted-development route: a drawing package then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Keston is the Bromley designation that most often changes a drawing package design.
Article 4 and your Bromley drawing package: Bromley Council has made no borough-wide direction, so permitted development for a drawing package in Bromley generally survives outside Bromley conservation areas and listed curtilages. A Lawful Development Certificate at £274 is how a SE20 owner records that a drawing package was lawful.
What Bromley is built from: Large 1930s detached and semi-detached in Chislehurst and Bickley; Edwardian in Beckenham; Victorian in Bromley town; Metropolitan Green Belt covers significant rural-fringe land. Largest London borough by area; substantial Green Belt; conservation areas in most town centres; generally permissive elsewhere. That mix decides the drawing package route in Bromley more than the postcode does, and it is what a Bromley Council case officer reads first. A householder application costs £548 paid to Bromley Council direct, with 8 weeks to a decision once validated.
Sources for this Bromley drawing package page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.
Over the 12 quarters from 2023 Q2 to 2026 Q1, Bromley decided 4,706 householder planning applications and approved 79.8% of them — 3.2 percentage points below the London average of 83%. That places Bromley 24th of 32 London boroughs on householder approval rate. These are decisions the council reported to MHCLG, not our own sample.
| Measure | Bromley | Context |
|---|---|---|
| Householder applications decided | 4,706 | 77,680 across London |
| Householder approval rate | 79.8% | 83% London average |
| Decided within 8 weeks | 89.7% | 24th fastest of 32 boroughs |
| Took longer than 13 weeks | 5.1% | the applications that overran the statutory target |
| Minor dwellings approval rate | 49.8% | new-build and conversion schemes under 10 units |
| All application types | 76.1% | across 6,712 decisions |
| Certificates of lawfulness issued | 1,675 | confirmations that work was permitted development |
Speed matters as much as the odds. Bromley decided 89.7% of householder applications inside the eight-week statutory period and let 5.1% run past thirteen weeks. A drawing package that is complete and correctly described at validation is the part of that timeline you control; the rest belongs to the council's caseload.
Source: MHCLG District Planning Application Statistics (PS1 and PS2), 2023 Q2 to 2026 Q1, published quarterly by the Ministry of Housing, Communities and Local Government. Counts are decisions made in the window, not applications submitted. Contains public sector information licensed under the Open Government Licence v3.0.
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Get my free quote →We've delivered architectural drawings across every part of Bromley. Each neighbourhood has its own conservation context and dominant housing stock — click through for area-specific guidance.