A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessibility — submitted to LABC or your approved inspector with structural calculations coordinated.
Building regulations drawings in Croydon, a borough of 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, are the full measured-survey-to-submission drawing set London Borough of Croydon needs in order to determine an application: existing and proposed plans, elevations and sections at 1:100 and 1:50, a location and site plan, and the supporting statements the case officer asks for.
Prepared and reviewed by the chartered technologist team at Architectural Drawings London — MCIAT chartered, £2m PI insured.Last reviewed 2026-08-03.


A construction-ready drawing package compliant with every Approved Document — Part A structure, Part B fire, Part L thermal, Part M accessibility — submitted to LABC or your approved inspector with structural calculations coordinated.
Housing stock in 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.
Character: Large, mixed-density outer borough; permissive in outer areas; heritage controls in conservation pockets; major regeneration in central Croydon.
Plans, sections and elevations at 1:50 with full annotation and material specification.
U-values for walls, roof, floor and glazing; SAP or SBEM where required; compliance statement.
Chartered engineer sign-off on beams, pad foundations, lintels, roof structure.
Escape routes, compartmentation, smoke alarms, fire-rated construction detail.
Soil and vent pipe routes, MVHR coordination, EV charging (Part S).
Full Plans submission to Croydon Council Building Control or an approved inspector with inspections coordinated through to completion certificate.

Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Move the controls for an indicative figure. It anchors your budget — it is not a quote. Every project is priced after a free survey.
Build costs are separate and quoted by your contractor. See our published fees.
Every Croydon postcode district we draw in, the stock that dominates it and the authority that validates a building regulations package there. Croydon fees below are the statutory England rates for 2026, not building regulations package estimates.
| Postcode | Area | Dominant stock | What it means for a building regulations package |
|---|---|---|---|
| SE19 | Upper Norwood / Crystal Palace | Victorian villas, Edwardian terraces | SE19 straddles a boundary: Upper Norwood / Crystal Palace addresses fall to Croydon Council or Lambeth Council, so confirm which authority validates the building regulations package before submitting SE19 drawings. |
| SE25 | South Norwood / Selhurst | Victorian terraces | South Norwood / Selhurst sits wholly inside SE25, so Croydon Council validates every building regulations package submitted from an SE25 address. |
| CR0 | Croydon / Addiscombe / Shirley | Edwardian terraces, post-war flats | Croydon / Addiscombe / Shirley sits wholly inside CR0, so Croydon Council validates every building regulations package submitted from an CR0 address. |
| 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 building regulations package, and South Croydon case officers apply the CR2 conservation-area map. |
| CR5 | Coulsdon | 1930s semi-detached | CR5 covers Coulsdon only; Croydon Council handles the building regulations package, and Coulsdon case officers apply the CR5 conservation-area map. |
| CR7 | Thornton Heath | Edwardian terraces | CR7 covers Thornton Heath only; Croydon Council handles the building regulations package, and Thornton Heath case officers apply the CR7 conservation-area map. |
| CR8 | Purley | 1930s semi-detached, Edwardian villas | A building regulations package at an CR8 address in Purley is determined by Croydon Council under its own Local Plan policies for Purley. |
| SE20 | Anerley / Penge | Victorian and Edwardian terraces | Anerley / Penge is split at SE20. Either Bromley Council or Croydon Council can determine a building regulations package here, so the SE20 address is checked against both policies maps first. |
Roof pitch, wall build-up and plot depth change every few Croydon streets, and each one changes what a building regulations 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 building regulations 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 building regulations package is judged on the street elevation first.
Article 4 and your Croydon building regulations package: Croydon Council has made no borough-wide direction, so permitted development for a building regulations package in Croydon generally survives outside Croydon conservation areas and listed curtilages. A Lawful Development Certificate at £274 is how a SE19 owner records that a building regulations package was lawful.
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 building regulations 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 building regulations 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.
Direct answers to the questions Croydon homeowners ask every week about building regulations drawings.
Start a free quote →In Croydon, you can submit building regulations applications to either Croydon Council's in-house Building Control (LABC route) or to a private approved inspector. Both routes produce the same legally-valid completion certificate. We submit to whichever suits your project and builder.
The building regulations fee for a Croydon project is set by scope: a straightforward extension or loft is the baseline, while HMOs, basement conversions and flat splits need more detailing and coordination. Structural calculations are priced by the intervention — a single beam is far less than a full loft or underpinning package. See our fees.
Yes — every habitable loft conversion in Croydon (and across England) requires Building Regulations approval covering fire escape, floor structure, insulation and staircase. This is independent of whether you also need planning permission.
Part L of the Building Regulations sets minimum energy-efficiency standards — insulation, glazing U-values, air permeability, heating efficiency. New extensions in Croydon must meet the 2025 uplift (Future Homes Standard transition). We include full Part L calculations and a compliance statement in every Complete package.
Once submitted, Croydon Council Building Control reviews Full Plans within 5–8 weeks. Approved inspectors typically review in 2–4 weeks. On-site inspections run through the build — typically 6–10 visits depending on scope.
In Croydon, building regulations are required for: loft conversions, extensions, structural alterations, roof replacements, new openings in walls, and any work to a flat. Some minor works (like-for-like replacements, small porches) are exempt. We confirm at the free site visit.
A completion certificate from Croydon Council Building Control (or an approved inspector) confirms your works comply with Building Regulations. It is essential for selling or re-mortgaging — lenders and conveyancers require it. We manage the inspection sequence and close out sign-off as part of every Complete package.
Extensions and loft conversions in Croydon that change the building's energy characteristics require an updated EPC (or SAP/SBEM calculation as part of Part L compliance). We include Part L calculations in every Complete and Bespoke package.

If your property sits on a boundary, here are the neighbouring options.
We cover every architectural technology service in Croydon with one chartered team.
Every loft type across every Croydon roof line — dormer, mansard, hip-to-gable, L-shape, Velux. LDC or full planning route, building regulat...
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 Cro...
Turn your unused Croydon garage into a bedroom, home office or open-plan kitchen-diner. Planning route assessment, full building regulations...
Full architectural technology service for basement digs and cellar conversions in Croydon — structural underpinning design, waterproofing st...
Chartered structural engineer calculations for every residential intervention in Croydon — steel beams, lintels, pad foundations, wall remov...
Measured surveys across Croydon — floor plans, elevations and sections to ±3mm accuracy. Leica Disto laser + BLK360 point-cloud scanning, Au...
End-to-end Party Wall Act 1996 service for Croydon — Section 1, 3 and 6 notices, schedule of condition surveys, party wall award coordinatio...
London's most popular loft type — the full-width rear dormer. Planning or Permitted Development route assessed for your Croydon property, bu...
Leave your number and an Architectural technologist will call you back within 30 minutes during working hours.
No obligation. No sales pressure. Just expert advice about building regulations drawings in Croydon.
Free quote in 60 seconds. No hourly billing. MCIAT chartered.
Get my free quote →