Roof alteration in Croydon: Planning Permission Guide
What you need to know about roof alterations in Croydon — re-roofing, rooflights, and changing materials.
Check if your roof alteration qualifiesRoof alterations in Croydon at a glance
application fee
weeks typical
Croydon is a large and diverse south London borough with conservation areas around Croydon Minster, Addington Village, Coulsdon, South Norwood, and Waddon. The south of the borough borders Green Belt and the Surrey Hills AONB (National Landscape), triggering Article 2(3) designated land rules in the Biggin Hill and Kenley fringe. Article 4 Directions restrict specific rights in some conservation areas including parts of Shirley, Coulsdon, and Upper Norwood. Flood zones apply along the Wandle valley.
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Approval probability, 5 nearest comparables, refusal reasons — for your specific address.
Recent roof alteration decisions in Croydon
The 5 most recent decided applications. Addresses redacted to postcode area.
Erection of side/rear two storey extension following demolition of garage, 1x air source heat pump and 5x solar panels.
Details pursuant to condition 5 (Construction Logistics Plan) attached to planning application 25/02942/FUL (Installation of heat pumps a…
Installation of 14 solar panels on rear facing sloping roof.
Alterations, conversion of existing outbuilding to form a 1-bedroom dwelling, erection of extension to outbuilding, and provision of sola…
Details pursuant to Condition 15a (layout and design of the Photovoltaic Panels) attached to planning permission 22/03820/FUL for redevel…
These are borough-wide. See the 5 nearest to your address.
Get my report — £9Permitted Development Rules
Any other alteration to the roof of a dwellinghouse
GPDO 2015, Schedule 2, Part 1, Class C
Roof alterations (other than dormers and loft conversions) are covered by Part 1, Class C of the GPDO. The key rule is that the alteration must not project beyond the existing roof plane.
Key dimension limits
These are the maximum GPDO limits for a detached house with no constraints. Your actual limits depend on your property type, location, and any planning restrictions.
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Check my limitsTypical Costs in London
Roof alteration costs vary depending on the scope — adding rooflights is much cheaper than a full roof replacement.
Cost per m²
construction rate
Typical total
Typically includes
Typically excludes
Covers re-roofing, changing roof materials, adding rooflights. Full roof replacement is at the higher end.
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Get my estimateWhich Professionals Do You Need?
Most roof alterations don't need an architect, but a roofing contractor or draughtsperson can prepare any required drawings.
A draughtsperson or architectural technician can prepare any drawings needed. A full architect may not be necessary.
Roof alterations may need drawings for Building Regulations, but a draughtsperson or roofing contractor can often provide these.
Typical fee: £500–£2,000 (Basic drawings if needed)
This guidance is based on a typical semi-detached house with no special constraints. Listed buildings, conservation areas, and attached properties may require additional professional input.
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Get personalised guidanceConservation Areas & Listed Buildings
In conservation areas, roof alterations that change the appearance of the roof may be more tightly controlled. Materials should match the existing roof.
Properties in conservation areas often have reduced permitted development rights. Some project types (like side extensions) lose PD rights entirely. An Article 4 Direction can remove additional PD rights.
Listed buildings (Grade I, II*, or II) have no permitted development rights at all. Any external alteration requires Listed Building Consent in addition to any planning permission. An architect experienced in heritage work is essential.
Check if your property is in a conservation area or has other planning constraints.
Check my propertyFrequently Asked Questions
Just want a quick yes/no for your roof alteration?
Run our free 2-minute check to see whether your project likely qualifies as permitted development in Croydon. For personalised approval odds and nearby comparables, get the full report above.
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