Bromley controls SE20's conservation areas around Penge; SE20 is one of south-east London's most affordable period markets.


If your property sits elsewhere in the borough, the borough-wide page for planning drawings in Bromley covers the same service across every ward.
Planning drawings for Anerley start by establishing whether your scheme is Permitted Development, needs a Lawful Development Certificate, or full planning from Bromley Council. On SE20's victorian and edwardian terraces and villas around, the recurring questions are roof additions, rear and side-return extensions, and alterations within Alexandra Cottages, Penge High Street, Crystal Palace Park. We draw existing and proposed plans, elevations and a site location plan to the council's validation checklist for Penge, Anerley, Crystal Palace Park fringe.
Across Penge, Anerley, Crystal Palace Park fringe in SE20, the dominant property is victorian and edwardian terraces and villas around penge and anerley, with mansion blocks and post-war pockets near the crystal palace park. That stock shapes what planning permission drawings looks like here: the right approach for a period terrace differs from a mansion-block flat or a new-build, and Bromley Council judges each on design quality and neighbour impact. We survey the specific Anerley property, confirm the planning route — Permitted Development, a Lawful Development Certificate, or full planning — and draw a council-ready set tailored to the SE20 streetscape.
Housing stock in SE20: Victorian and Edwardian terraces and villas around Penge and Anerley, with mansion blocks and post-war pockets near the Crystal Palace park.
Within the district: Penge, Anerley, Crystal Palace Park fringe.
Streets we know in SE20: the Alexandra Cottages, the Penge High Street area, Maple Road and the Anerley streets. Each road has its own building line, boundary treatment and precedent that Bromley Council weighs when assessing a planning permission drawings scheme.
Conservation areas: Alexandra Cottages, Penge High Street, Crystal Palace Park. Inside these, most external work needs full planning and a Heritage Statement.
Getting around SE20: Penge West and Anerley on the Overground, plus Penge East and Kent House rail.
Property values: Bromley registered 1,066 terraced sales in 2025 at a median of £513,375 — above the £420,000 that half of all SE20 property sold under.
Borough character: Largest London borough by area; substantial Green Belt; conservation areas in most town centres; generally permissive elsewhere.
A chartered technologist visits and laser-measures every room. Typically 60–90 minutes on site.
Drafted in Revit or AutoCAD at 1:100 or 1:50. Fully annotated and council-ready.
Unlimited revisions until you approve. Shadow studies for committee-sensitive applications.
Site location plan, block plan, Design & Access Statement where required.
We lodge the application with Bromley Council and pay statutory fees directly.
Every officer query, consultation response and amendment handled through to determination.
Single planning or building-regs submission.
Planning + building regs + structural.
Listed, conservation or complex sites.

Yes. The Victorian and Edwardian terraces and villas around Maple Road and the Anerley streets suit side-return, rear and loft extensions, much of it within Permitted Development outside the conservation areas, confirmed with a Lawful Development Certificate. We confirm the route and draw to Bromley's checklist.
Alexandra Cottages is a conservation area of distinctive Victorian model-housing with strong uniform character, so external changes there are tightly assessed on materials and form. We design sympathetically and submit a full application with a Heritage Statement where the designation applies.
Usually yes outside the conservation areas — a rear dormer or L-shape within the volume allowance, confirmed by a Lawful Development Certificate. Inside the Alexandra Cottages or Penge High Street designations, roof changes need full planning. We confirm which applies to your road.
The Overground link keeps demand strong.
Bromley Council charges its own statutory application fee (currently £548 for a householder planning application, £610 for a full application). We quote the drawings as one fixed price and the free site survey covers every SE20 address.
For a SE20 project across Penge, Anerley, Crystal Palace Park fringe, expect roughly 3–4 weeks from instruction to submission: week 1 the measured survey, weeks 2–3 the drawings and your revisions, then validation and the statutory determination by Bromley Council (8 weeks for a householder application). We carry the Anerley application through every officer query to the decision.
Anerley (SE20) sits primarily in Bromley, so applications are decided by Bromley Council. Conservation areas within SE20 include Alexandra Cottages, Penge High Street, Crystal Palace Park, where full planning and a Heritage Statement are required. We confirm the planning route for your exact address before quoting.
Almost always. Any structural work behind planning permission drawings in Anerley — new openings, steel beams, loft floors, foundations — needs Building Regulations approval covering structure (Part A), fire escape (Part B) and insulation (Part L), submitted to Bromley Council Building Control or an approved inspector. On SE20's typically terraced and semi-detached stock, a Party Wall notice to adjoining neighbours is normally required before the steelwork. We coordinate both as part of the Complete package.
In value terms, yes. The bigger risk is an unapproved or non-compliant scheme — which is why council-ready drawings and a clean Building Control sign-off matter on SE20 homes.
If your site sits close to the edge of the borough, it is worth checking the authority next door. Browse everything we do in SE9, SE12, SE26, BR1, BR2, BR3, BR6 and BR7.
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
Every SE20 postcode district we draw in, the stock that dominates it and the authority that validates a planning drawing set there. SE20 fees below are the statutory England rates for 2026, not planning drawing set estimates.
| Postcode | Area | Dominant stock | What it means for a planning drawing set |
|---|---|---|---|
| SE20 | Anerley / Penge | Victorian and Edwardian terraces | SE20 straddles a boundary: Anerley / Penge addresses fall to Bromley Council or Croydon Council, so confirm which authority validates the planning drawing set before submitting SE20 drawings. |
| SE20 | Penge | Victorian and Edwardian terraces | Penge sits inside SE20; planning drawing set proposals here are determined by Bromley Council. |
| BR1 | Bromley / Bickley | Victorian terraces, Edwardian villas, post-war flats | Adjoining district to SE20, also inside Bromley for planning drawing set purposes. |
| BR2 | Hayes / Keston | Victorian terraces, Edwardian villas, post-war flats | Adjoining district to SE20, also inside Bromley for planning drawing set purposes. |
| BR3 | Beckenham | Edwardian villas, 1930s semi-detached | Adjoining district to SE20, also inside Bromley for planning drawing set purposes. |
| SE19 | Upper Norwood / Crystal Palace | Victorian villas, Edwardian terraces | Adjoining district to SE20, also inside Croydon for planning drawing set purposes. |
| SE25 | South Norwood / Selhurst | Victorian terraces | Adjoining district to SE20, also inside Croydon for planning drawing set purposes. |
| CR0 | Croydon / Addiscombe / Shirley | Edwardian terraces, post-war flats | Adjoining district to SE20, also inside Croydon for planning drawing set purposes. |
| CR2 | South Croydon | mixed stock | Adjoining district to SE20, also inside Croydon for planning drawing set purposes. |
Roof pitch, wall build-up and plot depth change every few SE20 streets, and each one changes what a planning drawing set can achieve at that address.
Conservation areas covering SE20 (Anerley / Penge): Bromley Council runs 48, and Bromley Town, Chislehurst, Beckenham are the ones SE20 (Anerley / Penge) owners meet most. A planning drawing set inside a SE20 (Anerley / Penge) conservation area loses permitted development, so the SE20 (Anerley / Penge) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Beckenham a planning drawing set is judged on the street elevation first.
No blanket Article 4 over SE20 (Anerley / Penge): Bromley Council has not withdrawn permitted development across SE20 (Anerley / Penge), so a planning drawing set outside a SE20 (Anerley / Penge) conservation area usually keeps it. The £274 Lawful Development Certificate is still the document a SE20 owner wants on file.
The building fabric around SE20 (Anerley / Penge): Large 1930s detached and semi-detached in Chislehurst and Bickley; Edwardian in Beckenham; Victorian in Bromley town; Metropolitan Green Belt covers significant rural-fringe land. Largest London borough by area; substantial Green Belt; conservation areas in most town centres; generally permissive elsewhere. A planning drawing set in SE20 (Anerley / Penge) 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 Bromley Council.
Conservation areas covering SE20 (Anerley / Penge): Croydon Council runs 24, and South Norwood, Crystal Palace, Old Coulsdon are the ones SE20 (Anerley / Penge) owners meet most. A planning drawing set inside a SE20 (Anerley / Penge) conservation area loses permitted development, so the SE20 (Anerley / Penge) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Old Coulsdon a planning drawing set is judged on the street elevation first.
No blanket Article 4 over SE20 (Anerley / Penge): Croydon Council has not withdrawn permitted development across SE20 (Anerley / Penge), so a planning drawing set outside a SE20 (Anerley / Penge) conservation area usually keeps it. The £274 Lawful Development Certificate is still the document a SE20 owner wants on file.
The building fabric around SE20 (Anerley / Penge): 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 planning drawing set in SE20 (Anerley / Penge) 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 SE20 planning drawing set 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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