Architect in SE20 | Loft Conversions, Extensions & Planning
RIBA-aligned architectural design, planning applications and structural engineering in Se20 and across London.
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Architect in SE20 Penge | Crown Architecture
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Crown Architecture — RIBA Chartered Architects | 15+ Years Serving London | 500+ Projects Completed | 5-Star Rated | SE20 Planning Specialists
Introduction
SE20 Penge and Anerley sits within the jurisdiction of the London Borough of Bromley. The housing stock is primarily Victorian terraced housing, creating strong demand for house extensions, loft conversions, and home reconfigurations.
Crown Architecture brings established local planning knowledge and a proven track record with the London Borough of Bromley to every residential project in SE20. Our work spans Penge, Anerley, Thicket Road area. Transport across SE20 is well-served by Penge East (National Rail), Penge West (Overground), Anerley (National Rail), making this a popular area for investment and improvement.
We advise on what is genuinely achievable before you commit to any design direction — taking into account your specific property, the relevant conservation area guidance, and the established preferences of the London Borough of Bromley planning team.
Our Services in SE20 Penge and Anerley
- House Extensions — rear, side-return, double-storey and wrap-around additions
- Loft Conversions — dormer, hip-to-gable, mansard and rooflight conversions
- Planning Applications — full planning and permitted development to the London Borough of Bromley
- Building Regulations — structural and building control packages
- Measured Surveys & Drawings — feasibility, concept, planning and technical packages
- Interior Reconfiguration — open-plan conversions, partition removal, stair redesigns
- Structural Engineering — integrated service for extensions and conversions
Planning in SE20: London Borough of Bromley
Conservation Areas: Penge Conservation Area, Anerley Conservation Area.
Properties within or adjacent to conservation areas require planning permission for most external alterations and detailed design and access statements demonstrating design sensitivity.
Permitted Development: Most houses retain PD rights unless in a conservation area or subject to Article 4. Single-storey rear extensions up to 3m (attached) or 4m (detached) typically do not require planning permission. We verify your specific address before advising.
Portal: www.bromley.gov.uk/planning | Timelines: 8-week statutory target; 9-12 weeks in practice.
Why Choose Crown Architecture for SE20 Penge and Anerley
- Approved projects across SE20 and neighbouring postcodes
- Fixed-fee packages: survey, planning drawings, building regulations included
- Strong track record with the London Borough of Bromley
- RIBA Chartered — all projects led by qualified architects
- Feasibility within 7 days; planning-ready drawings within 4–6 weeks
- Integrated structural engineering
FAQs — Architects in SE20 Penge and Anerley
Q1: Do I need planning permission for a rear extension in SE20?
A: A single-storey rear extension up to 3m deep (attached) or 4m (detached) typically qualifies as permitted development, unless in a conservation area. All other extensions require a planning application to the London Borough of Bromley.
Q2: How much does an architect cost for a house extension in SE20?
A: Our fees start from £3,500 + VAT for a standard rear extension (surveys, planning drawings, building regs). Complex or conservation area projects are quoted individually. Free initial consultation.
Q3: How long does planning take with London Borough of Bromley?
A: 8-week statutory target; expect 9-12 weeks in practice for minor residential applications.
Q4: Can I convert my loft in SE20?
A: Yes — a rear dormer typically qualifies as PD (Class B) unless in a conservation area. Hip-to-gable conversions require planning permission. Free feasibility check available.
Q5: What are the conservation areas in SE20?
A: Penge Conservation Area, Anerley Conservation Area. We check your specific address and advise on the implications for your project.
Q6: Do I need building regulations as well as planning permission?
A: Yes — these are separate approvals covering structural safety, fire escape, insulation, and energy efficiency. We prepare and submit both.
Q7: Can I do a side-return extension in SE20?
A: Most Victorian and Edwardian terraces in SE20 have side-return potential. A single-storey side-return typically qualifies as PD unless in a conservation area.
Q8: What is the Party Wall Act and do I need to comply?
A: If work is within 3m of a neighbour’s foundation or involves a shared wall, the Party Wall etc. Act 1996 applies. We advise on notices; a separate Party Wall surveyor is appointed if needed.
What Our SE20 Penge and Anerley Clients Say
> “Crown Architecture produced our extension drawings for our Penge Victorian terrace and Bromley Council approved in 9 weeks. Clean, efficient service.” — Gary & Christine M., Maple Road, SE20
> “We wanted a double-storey rear extension on our SE20 terrace. Crown Architecture designed it to Bromley’s requirements and got planning approval efficiently.” — Sandra T., Thicket Road, SE20
> “Our loft conversion in Anerley was handled professionally by Crown Architecture. Planning and building regs both approved without issues.” — David O., Parish Lane, SE20
Nearby Areas We Also Serve
SE19 Crystal Palace, SE26 Sydenham, BR3 Beckenham, Bromley Borough
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Meta Title: Architect in SE20 Penge | Extensions & Loft Conversions | Crown Architecture
Meta Description: RIBA Chartered Architects serving SE20 Penge and Anerley. Expert house extensions, loft conversions, and planning applications. Free consultation — call today.