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Croydon Council

Architectural technology in Croydon

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.

Croydon at a glance

Planning authority
Croydon Council
Population
390,000
Conservation areas
24
Article 4 Direction
No borough-wide
Postcodes
CR0, CR2, CR5, CR7, CR8, CR9, SE19, SE20, SE25
Typical housing
Victorian villas in Upper Norwood and Crystal Palace

London period house exterior with architectural character — architectural drawings in Croydon

What is Croydon like to apply in?

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.

MeasureCroydonLondon
Householder approval rate81.6%83.0%
Decided inside eight weeks93.4%
Larger-extension prior approvals granted29478.6% of those determined
Lawful development certificates issued1,699
Conservation areas20 covering 422 ha1,141 across London
Enforcement notices issued173,554
Householder appeals allowed after refusal36.6% of 44040.8% 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 Croydon

Every architectural service in Croydon — one chartered team.

Planning Drawings in Croydon

Building Regulations Drawings in Croydon

A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessib...

Loft Conversions in Croydon

Every loft type across every Croydon roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regu...

House Extensions in Croydon

The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical p...

Mansard Roof Extensions in Croydon

Croydon's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...

Garage Conversions in Croydon

Turn your unused Croydon garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulati...

Basement Conversions in Croydon

Full architectural technology service for basement digs and cellar conversions in Croydon — structural underpinning design, waterproofing...

Structural Calculations in Croydon

Chartered structural engineer calculations for every residential intervention in Croydon — steel beams, lintels, pad foundations, wall re...

Measured Building Surveys in Croydon

Measured surveys across Croydon — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...

Party Wall Services in Croydon

End-to-end Party Wall Act 1996 service for Croydon — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordina...

Rear Dormer Loft Conversions in Croydon

London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Croydon property,...

Croydon planning context

Planning in Croydon

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

Architectural technology in Croydon — the exterior of a London house before works
The exterior of a london house before works — architectural technology in Croydon.
Nearby boroughs

Boroughs adjacent to Croydon

Victorian villas in Crystal Palace SE19
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What we do in Croydon

Planning Drawings in Croydon

Building Regulations Drawings in Croydon

A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessib...

Loft Conversions in Croydon

Every loft type across every Croydon roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regu...

House Extensions in Croydon

The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical p...

Mansard Roof Extensions in Croydon

Croydon's most space-efficient loft solution when PD-route dormers are blocked. Our chartered team designs mansards that get approved in ...

Garage Conversions in Croydon

Turn your unused Croydon garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulati...

Basement Conversions in Croydon

Full architectural technology service for basement digs and cellar conversions in Croydon — structural underpinning design, waterproofing...

Structural Calculations in Croydon

Chartered structural engineer calculations for every residential intervention in Croydon — steel beams, lintels, pad foundations, wall re...

Measured Building Surveys in Croydon

Measured surveys across Croydon — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning,...

Party Wall Services in Croydon

End-to-end Party Wall Act 1996 service for Croydon — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordina...

Rear Dormer Loft Conversions in Croydon

London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Croydon property,...

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An architectural technologist checking a printed set of house drawings, marking a proposed elevation in red — architectural technology in Croydon
Every set is checked line by line against the validation checklist before it leaves the office.

Where in Croydon does a drawing package actually get determined?

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.

PostcodeAreaDominant stockWhat it means for a drawing package
SW16Streatham / NorburyEdwardian terraces, post-war flatsSW16 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.
SE19Upper Norwood / Crystal PalaceVictorian villas, Edwardian terracesUpper 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.
SE25South Norwood / SelhurstVictorian terracesSouth Norwood / Selhurst sits wholly inside SE25, so Croydon Council validates every drawing package submitted from an SE25 address.
CR0Croydon / Addiscombe / ShirleyEdwardian terraces, post-war flatsCR0 covers Croydon / Addiscombe / Shirley only; Croydon Council handles the drawing package, and Croydon / Addiscombe / Shirley case officers apply the CR0 conservation-area map.
CR2South CroydonVictorian 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 centralCR2 covers South Croydon only; Croydon Council handles the drawing package, and South Croydon case officers apply the CR2 conservation-area map.
CR5Coulsdon1930s semi-detachedA drawing package at an CR5 address in Coulsdon is determined by Croydon Council under its own Local Plan policies for Coulsdon.
CR7Thornton HeathEdwardian terracesA drawing package at an CR7 address in Thornton Heath is determined by Croydon Council under its own Local Plan policies for Thornton Heath.
CR8Purley1930s semi-detached, Edwardian villasA drawing package at an CR8 address in Purley is determined by Croydon Council under its own Local Plan policies for Purley.

Which Croydon neighbourhoods suit a drawing package best?

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.

What local planning policy applies to a drawing package in Croydon?

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.

Which neighbouring authorities border Croydon?

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.

What are the chances of approval in Croydon?

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.

81.6%of householder applications approved
2,203approved in Croydon
498refused over the same period
93.4%decided within 8 weeks
Croydon planning decisions, 2023 Q2 to 2026 Q1
MeasureCroydonContext
Householder applications decided2,70177,680 across London
Householder approval rate81.6%83% London average
Decided within 8 weeks93.4%14th fastest of 32 boroughs
Took longer than 13 weeks2.8%the applications that overran the statutory target
Minor dwellings approval rate37.5%new-build and conversion schemes under 10 units
All application types69.5%across 5,164 decisions
Certificates of lawfulness issued1,699confirmations 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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Neighbourhoods we cover in Croydon

10 Croydon neighbourhoods

We've delivered architectural drawings across every part of Croydon. Each neighbourhood has its own conservation context and dominant housing stock — click through for area-specific guidance.

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