Planning drawings, building regulations, loft conversions, house extensions and mansards — delivered across Croydon by MCIAT chartered technologists with deep knowledge of Croydon Council's policies.
Predictable and quick. Croydon approved 81.6% of 2,701 householder decisions, settled 93.4% inside eight weeks, and is the most receptive borough in London on the 6m prior approval route — 294 granted against 80 refused, a 78.6% grant rate. It issued just 17 enforcement notices over the same three years.
| Measure | Croydon | London |
|---|---|---|
| Householder approval rate | 81.6% | 83.0% |
| Decided inside eight weeks | 93.4% | — |
| Larger-extension prior approvals granted | 294 | 78.6% of those determined |
| Lawful development certificates issued | 1,699 | — |
| Conservation areas | 20 covering 422 ha | 1,141 across London |
| Enforcement notices issued | 17 | 3,554 |
| Householder appeals allowed after refusal | 36.6% of 440 | 40.8% of 13,067 |
Sources: decision and enforcement figures from MHCLG District Planning Application Statistics (PS1 and PS2), twelve quarters to March 2026; conservation areas from planning.data.gov.uk, retrieved 1 September 2026; appeals from Planning Inspectorate casework decided 2016–2026. Open Government Licence v3.0.
Services available in CroydonA 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 Croydon 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...
Croydon's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...
Turn your unused Croydon 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 Croydon — structural underpinning design, waterproofing...
Chartered structural engineer calculations for every residential intervention in Croydon — steel beams, lintels, pad foundations, wall re...
Measured surveys across Croydon — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...
End-to-end Party Wall Act 1996 service for Croydon — 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 Croydon property,...


Housing stock: Victorian villas in Upper Norwood and Crystal Palace; Edwardian terraces in Thornton Heath and Selhurst; 1930s semi-detached in Purley and Coulsdon; post-war in Croydon central.
Character: Large, mixed-density outer borough; permissive in outer areas; heritage controls in conservation pockets; major regeneration in central Croydon.
Notable conservation areas: South Norwood, Crystal Palace, Old Coulsdon, Purley, Shirley Park

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 Croydon 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...
Croydon's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...
Turn your unused Croydon 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 Croydon — structural underpinning design, waterproofing...
Chartered structural engineer calculations for every residential intervention in Croydon — steel beams, lintels, pad foundations, wall re...
Measured surveys across Croydon — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...
End-to-end Party Wall Act 1996 service for Croydon — 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 Croydon property,...
Leave your number and an Architectural technologist covering Croydon will call you back within 30 minutes during working hours.

Every Croydon postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. Croydon fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| SW16 | Streatham / Norbury | Edwardian terraces, post-war flats | SW16 straddles a boundary: Streatham / Norbury addresses fall to Lambeth Council or Wandsworth Council or Merton Council or Croydon Council, so confirm which authority validates the drawing package before submitting SW16 drawings. |
| SE19 | Upper Norwood / Crystal Palace | Victorian villas, Edwardian terraces | Upper Norwood / Crystal Palace is split at SE19. Either Croydon Council or Lambeth Council can determine a drawing package here, so the SE19 address is checked against both policies maps first. |
| SE25 | South Norwood / Selhurst | Victorian terraces | South Norwood / Selhurst sits wholly inside SE25, so Croydon Council validates every drawing package submitted from an SE25 address. |
| CR0 | Croydon / Addiscombe / Shirley | Edwardian terraces, post-war flats | CR0 covers Croydon / Addiscombe / Shirley only; Croydon Council handles the drawing package, and Croydon / Addiscombe / Shirley case officers apply the CR0 conservation-area map. |
| CR2 | South Croydon | Victorian villas in Upper Norwood and Crystal Palace; Edwardian terraces in Thornton Heath and Selhurst; 1930s semi-detached in Purley and Coulsdon; post-war in Croydon central | CR2 covers South Croydon only; Croydon Council handles the drawing package, and South Croydon case officers apply the CR2 conservation-area map. |
| CR5 | Coulsdon | 1930s semi-detached | A drawing package at an CR5 address in Coulsdon is determined by Croydon Council under its own Local Plan policies for Coulsdon. |
| CR7 | Thornton Heath | Edwardian terraces | A drawing package at an CR7 address in Thornton Heath is determined by Croydon Council under its own Local Plan policies for Thornton Heath. |
| CR8 | Purley | 1930s semi-detached, Edwardian villas | A drawing package at an CR8 address in Purley is determined by Croydon Council under its own Local Plan policies for Purley. |
Roof pitch, wall build-up and plot depth change every few Croydon streets, and each one changes what a drawing package can achieve at that address.
Conservation areas covering Croydon: Croydon Council runs 24, and Purley, Shirley Park, South Norwood are the ones Croydon owners meet most. A drawing package inside a Croydon conservation area loses permitted development, so the Croydon submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Shirley Park a drawing package is judged on the street elevation first.
No blanket Article 4 over Croydon: Croydon Council has not withdrawn permitted development across Croydon, so a drawing package outside a Croydon conservation area usually keeps it. The £274 Lawful Development Certificate is still the document a SE19 owner wants on file.
The building fabric around Croydon: Victorian villas in Upper Norwood and Crystal Palace; Edwardian terraces in Thornton Heath and Selhurst; 1930s semi-detached in Purley and Coulsdon; post-war in Croydon central. Large, mixed-density outer borough; permissive in outer areas; heritage controls in conservation pockets; major regeneration in central Croydon. A drawing package in Croydon is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Croydon Council.
Sources for this Croydon 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, Croydon decided 2,701 householder planning applications and approved 81.6% of them — 1.4 percentage points below the London average of 83%. That places Croydon 20th of 32 London boroughs on householder approval rate. These are decisions the council reported to MHCLG, not our own sample.
| Measure | Croydon | Context |
|---|---|---|
| Householder applications decided | 2,701 | 77,680 across London |
| Householder approval rate | 81.6% | 83% London average |
| Decided within 8 weeks | 93.4% | 14th fastest of 32 boroughs |
| Took longer than 13 weeks | 2.8% | the applications that overran the statutory target |
| Minor dwellings approval rate | 37.5% | new-build and conversion schemes under 10 units |
| All application types | 69.5% | across 5,164 decisions |
| Certificates of lawfulness issued | 1,699 | confirmations that work was permitted development |
Speed matters as much as the odds. Croydon decided 93.4% of householder applications inside the eight-week statutory period and let 2.8% 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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