Croydon / Addiscombe / Shirley — covered by Croydon Council.
Planning permission drawings delivered by an MCIAT chartered team.
Building regulations drawings delivered by an MCIAT chartered team.
Loft conversion drawings delivered by an MCIAT chartered team.
House extension drawings delivered by an MCIAT chartered team.
Mansard roof extensions delivered by an MCIAT chartered team.
Garage conversion drawings delivered by an MCIAT chartered team.
Basement conversion drawings delivered by an MCIAT chartered team.
Structural calculations delivered by an MCIAT chartered team.
Measured building survey delivered by an MCIAT chartered team.
Party wall services delivered by an MCIAT chartered team.
Rear dormer drawings delivered by an MCIAT chartered team.


CR0 primarily covers Croydon / Addiscombe / Shirley in Croydon.
Decisions for CR0 are made by Croydon Council. Standard Permitted Development rules apply for most rear extensions and loft conversions on terraced and semi-detached houses, unless the property is in a conservation area, is listed, or sits under an Article 4 Direction. Article 4 in Croydon: No.
Building regs from £950. We do not charge hourly. Free site survey across all CR0 addresses.
From first call to planning decision: typically 12–14 weeks. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination. Croydon Council timelines align with the national norm.
Croydon / Addiscombe / Shirley in CR0 is characterised by the housing stock of Croydon — broadly victorian villas in upper norwood and crystal palace.

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Every CR0 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. CR0 fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| CR0 | Croydon / Addiscombe / Shirley | Edwardian terraces, post-war flats | CR0 covers Croydon / Addiscombe / Shirley only; Croydon Council handles the drawing package. |
| CR0 | Croydon | Edwardian terraces, post-war flats | Croydon sits inside CR0; drawing package proposals here are determined by Croydon Council. |
| CR0 | Addiscombe | Edwardian terraces | Addiscombe sits inside CR0; drawing package proposals here are determined by Croydon Council. |
| CR0 | Shirley | 1930s semi-detached | Shirley sits inside CR0; drawing package proposals here are determined by Croydon Council. |
| SE19 | Upper Norwood / Crystal Palace | Victorian villas, Edwardian terraces | Adjoining district to CR0, also inside Croydon for drawing package purposes. |
| SE25 | South Norwood / Selhurst | Victorian terraces | Adjoining district to CR0, also inside Croydon for drawing package purposes. |
| CR2 | South Croydon | mixed stock | Adjoining district to CR0, also inside Croydon for drawing package purposes. |
Roof pitch, wall build-up and plot depth change every few CR0 streets, and each one changes what a drawing package can achieve at that address.
How designation changes a CR0 (Croydon / Addiscombe / Shirley) drawing package: Croydon Council maintains 24 conservation areas, including Crystal Palace, Old Coulsdon, Purley. Inside any of them a CR0 (Croydon / Addiscombe / Shirley) drawing package cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Shirley Park sets the tone for CR0 (Croydon / Addiscombe / Shirley) casework.
CR0 (Croydon / Addiscombe / Shirley) permitted development status: there is no borough-wide direction from Croydon Council, so a drawing package at a CR0 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a CR0 (Croydon / Addiscombe / Shirley) sale to argue it later.
What CR0 (Croydon / Addiscombe / Shirley) is built from: 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. That mix decides the drawing package route in CR0 (Croydon / Addiscombe / Shirley) more than the postcode does, and it is what a Croydon Council case officer reads first. A householder application costs £548 paid to Croydon Council direct, with 8 weeks to a decision once validated.
Sources for this CR0 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.
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