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.
Building regulations drawings in Lewisham, a borough of Victorian and Edwardian terraces across Brockley, are the full measured-survey-to-submission drawing set London Borough of Lewisham needs in order to determine an application: existing and proposed plans, elevations and sections at 1:100 and 1:50, a location and site plan, and the supporting statements the case officer asks for.
Prepared and reviewed by the chartered technologist team at Architectural Drawings London — MCIAT chartered, £2m PI insured.Last reviewed 2026-08-03.


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.
Housing stock in Lewisham: Victorian and Edwardian terraces across Brockley, Honor Oak, Forest Hill; 1930s semi-detached in Catford and Hither Green; post-war mixed in Deptford.
Character: Generally permissive planning compared to central boroughs; loft conversions and side-return extensions routinely approved under PD.
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 Lewisham Council Building Control or an approved inspector with inspections coordinated through to completion certificate.

Single planning or regs submission.
Planning + building regs + structural.
Listed, conservation, complex sites.
Move the controls for an indicative figure. It anchors your budget — it is not a quote. Every project is priced after a free survey.
Build costs are separate and quoted by your contractor. See our published fees.
Every Lewisham postcode district we draw in, the stock that dominates it and the authority that validates a building regulations package there. Lewisham 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 |
|---|---|---|---|
| SE8 | Deptford | Georgian terraces, post-war estates, new-build | SE8 covers Deptford only; Lewisham Council handles the building regulations package, and Deptford case officers apply the SE8 conservation-area map. |
| SE12 | Lee / Grove Park | Victorian and Edwardian terraces across Brockley | Lee / Grove Park is split at SE12. Either Lewisham Council or Bromley Council can determine a building regulations package here, so the SE12 address is checked against both policies maps first. |
| SE13 | Lewisham / Hither Green | Victorian terraces, post-war flats | Lewisham / Hither Green sits wholly inside SE13, so Lewisham Council validates every building regulations package submitted from an SE13 address. |
| SE14 | New Cross | Victorian and Edwardian terraces across Brockley | New Cross sits wholly inside SE14, so Lewisham Council validates every building regulations package submitted from an SE14 address. |
| SE23 | Forest Hill / Honor Oak | Victorian villas, Edwardian terraces | SE23 covers Forest Hill / Honor Oak only; Lewisham Council handles the building regulations package, and Forest Hill / Honor Oak case officers apply the SE23 conservation-area map. |
| SE26 | Sydenham | Victorian villas, Edwardian terraces | Sydenham is split at SE26. Either Lewisham Council or Bromley Council can determine a building regulations package here, so the SE26 address is checked against both policies maps first. |
| SE3 | Blackheath / Kidbrooke | Georgian villas, Victorian terraces | A building regulations package in Blackheath / Kidbrooke may land with Greenwich Council or Lewisham Council — SE3 crosses the boundary, and the SE3 policies map decides it street by street. |
| SE4 | Brockley | Victorian and Edwardian terraces | SE4 covers Brockley only; Lewisham Council handles the building regulations package, and Brockley case officers apply the SE4 conservation-area map. |
Roof pitch, wall build-up and plot depth change every few Lewisham streets, and each one changes what a building regulations package can achieve at that address.
How designation changes a Lewisham building regulations package: Lewisham Council maintains 30 conservation areas, including Forest Hill, Hither Green, Lee Green. Inside any of them a Lewisham building regulations 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. Forest Hill sets the tone for Lewisham casework.
Article 4 and your Lewisham building regulations package: Lewisham Council has made no borough-wide direction, so permitted development for a building regulations package in Lewisham generally survives outside Lewisham conservation areas and listed curtilages. A Lawful Development Certificate at £274 is how a SE4 owner records that a building regulations package was lawful.
Lewisham housing stock: Victorian and Edwardian terraces across Brockley, Honor Oak, Forest Hill; 1930s semi-detached in Catford and Hither Green; post-war mixed in Deptford. Generally permissive planning compared to central boroughs; loft conversions and side-return extensions routinely approved under PD. Read that before choosing a building regulations package route in Lewisham — construction, not postcode, sets what is achievable. Lewisham Council charges £548 for a householder application and has 8 weeks to determine it.
Sources for this Lewisham 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.
Direct answers to the questions Lewisham homeowners ask every week about building regulations drawings.
Start a free quote →In Lewisham, you can submit building regulations applications to either Lewisham Council's in-house Building Control (LABC route) or to a private approved inspector. Both routes produce the same legally-valid completion certificate. We submit to whichever suits your project and builder.
The building regulations fee for a Lewisham project is set by scope: a straightforward extension or loft is the baseline, while HMOs, basement conversions and flat splits need more detailing and coordination. Structural calculations are priced by the intervention — a single beam is far less than a full loft or underpinning package. See our fees.
Yes — every habitable loft conversion in Lewisham (and across England) requires Building Regulations approval covering fire escape, floor structure, insulation and staircase. This is independent of whether you also need planning permission.
Part L of the Building Regulations sets minimum energy-efficiency standards — insulation, glazing U-values, air permeability, heating efficiency. New extensions in Lewisham must meet the 2025 uplift (Future Homes Standard transition). We include full Part L calculations and a compliance statement in every Complete package.
Once submitted, Lewisham Council Building Control reviews Full Plans within 5–8 weeks. Approved inspectors typically review in 2–4 weeks. On-site inspections run through the build — typically 6–10 visits depending on scope.
In Lewisham, building regulations are required for: loft conversions, extensions, structural alterations, roof replacements, new openings in walls, and any work to a flat. Some minor works (like-for-like replacements, small porches) are exempt. We confirm at the free site visit.
A completion certificate from Lewisham Council Building Control (or an approved inspector) confirms your works comply with Building Regulations. It is essential for selling or re-mortgaging — lenders and conveyancers require it. We manage the inspection sequence and close out sign-off as part of every Complete package.
Extensions and loft conversions in Lewisham that change the building's energy characteristics require an updated EPC (or SAP/SBEM calculation as part of Part L compliance). We include Part L calculations in every Complete and Bespoke package.

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