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 building regulations drawings in Bromley covers the same service across every ward.
Building regulations drawings for a Anerley project turn the design into a construction-ready set — Part A structure, Part B fire, Part L thermal, Part M access — for Bromley Council Building Control or an approved inspector. On SE20's victorian and edwardian terraces and villas around, the recurring details are steel beams over knocked-through ground floors, loft floor build-ups, and insulation upgrades to solid period walls around Penge, Anerley, Crystal Palace Park fringe.
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.
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 building regulations 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 building regulations 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: prices in the district finished 2025 up 1.2%, at a £420,000 median. Bromley overall, across 4,410 sales, sat at £525,000.
Borough character: Largest London borough by area; substantial Green Belt; conservation areas in most town centres; generally permissive elsewhere.
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 Bromley Council Building Control or an approved inspector with inspections coordinated through to completion certificate.
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 building regulations 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.
Moving, or weighing up a site in the next borough along? Here is the complete service list for 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 building regulations package there. SE20 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 |
|---|---|---|---|
| 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. |
| SE20 | Penge | Victorian and Edwardian terraces | Penge is inside SE20. Building control is not a council monopoly: an approved inspector can take the same job, discharging the same duty under the Building Regulations, wherever the address sits. |
| BR1 | Bromley / Bickley | Victorian terraces, Edwardian villas, post-war flats | Adjoining district to SE20. Building control here can go to Bromley or to an approved inspector, on the same terms as in SE20. |
| BR2 | Hayes / Keston | Victorian terraces, Edwardian villas, post-war flats | Adjoining district to SE20. Building control here can go to Bromley or to an approved inspector, on the same terms as in SE20. |
| BR3 | Beckenham | Edwardian villas, 1930s semi-detached | Adjoining district to SE20. Building control here can go to Bromley or to an approved inspector, on the same terms as in SE20. |
| SE19 | Upper Norwood / Crystal Palace | Victorian villas, Edwardian terraces | Adjoining district to SE20. Building control here can go to Croydon or to an approved inspector, on the same terms as in SE20. |
| SE25 | South Norwood / Selhurst | Victorian terraces | Adjoining district to SE20. Building control here can go to Croydon or to an approved inspector, on the same terms as in SE20. |
| CR0 | Croydon / Addiscombe / Shirley | Edwardian terraces, post-war flats | Adjoining district to SE20. Building control here can go to Croydon or to an approved inspector, on the same terms as in SE20. |
| CR2 | South Croydon | mixed stock | Adjoining district to SE20. Building control here can go to Croydon or to an approved inspector, on the same terms as in SE20. |
Roof pitch, wall build-up and plot depth change every few SE20 streets, and each one changes what a building regulations package can achieve at that address.
SE20 (Anerley / Penge) conservation designations: there are 48 across Bromley Council, Bromley Town, Chislehurst, Beckenham among them. Designation costs a SE20 (Anerley / Penge) owner the permitted-development route: a building regulations package then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Keston is the SE20 (Anerley / Penge) designation that most often changes a building regulations package design.
No blanket Article 4 over SE20 (Anerley / Penge): Bromley Council has not withdrawn permitted development across SE20 (Anerley / Penge), so a building regulations package 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 building regulations package 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.
SE20 (Anerley / Penge) conservation designations: there are 24 across Croydon Council, South Norwood, Crystal Palace, Old Coulsdon among them. Designation costs a SE20 (Anerley / Penge) owner the permitted-development route: a building regulations package then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Purley is the SE20 (Anerley / Penge) designation that most often changes a building regulations package design.
No blanket Article 4 over SE20 (Anerley / Penge): Croydon Council has not withdrawn permitted development across SE20 (Anerley / Penge), so a building regulations package 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 building regulations package 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 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.
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