House Extensions · DA6 Bexleyheath
Bexley applies standard suburban householder control across DA6, a settled inter-war family market; the Arts and Crafts Red House (William Morris) and its setting at Upton are protected.
This page covers one part of the borough. For the full picture — fees, timelines and the council's current position — read house extensions in Bexley.
House extensions in Bexleyheath are dominated by single-storey rear and side-return additions on DA6's inter-war bay-fronted semis and terraces around bexleyheath, with double-storey and wrap-around schemes where the plot allows. Bexley Council weighs depth, height and neighbour daylight; many extensions across Bexleyheath, Upton, Barnehurst fringe, Welling fringe are Permitted Development, which we confirm with a Lawful Development Certificate before you build.
The whole spectrum — rear extensions, side returns, wraparounds, double-storey, basement digs. Planning-led design with detailed technical phase, ideal for inter-war bay-fronted semis and terraces around bexleyheath typical of Bexleyheath.
Across Bexleyheath, Upton, Barnehurst fringe, Welling fringe in DA6, the dominant property is inter-war bay-fronted semis and terraces around bexleyheath, with some edwardian and post-war houses. That stock shapes what house extension drawings looks like here: the right approach for a period terrace differs from a mansion-block flat or a new-build, and Bexley Council judges each on design quality and neighbour impact. We survey the specific Bexleyheath property, confirm the planning route — Permitted Development, a Lawful Development Certificate, or full planning — and draw a council-ready set tailored to the DA6 streetscape.
Housing stock in DA6: Inter-war bay-fronted semis and terraces around Bexleyheath, with some Edwardian and post-war houses.
Within the district: Bexleyheath, Upton, Barnehurst fringe, Welling fringe.
Streets we know in DA6: the Upton Road area, the streets around the Broadway and the inter-war roads toward Barnehurst. Each road has its own building line, boundary treatment and precedent that Bexley Council weighs when assessing a house extension drawings scheme.
Conservation areas: Red House (Upton). Inside these, most external work needs full planning and a Heritage Statement.
Getting around DA6: Bexleyheath and Barnehurst into London Bridge, Cannon Street and Charing Cross.
Regeneration: Bexleyheath falls within or beside the Bexleyheath town centre, which shapes local planning policy and design expectations.
Property values: price-paid returns show DA6 moving up 7.3% during 2025 to a £422,000 median. The sample is 160 sales, so treat the direction as more reliable than the decimal.
Borough character: Outer south-east London suburban; very permissive planning environment; strong PD uptake for extensions and loft conversions.
Measured existing survey, photographic record, Article 4 and conservation check specific to Bexleyheath before we quote.
2–3 design options at concept stage — alternative layouts, glazing, roof forms.
Site location plan, existing and proposed plans, elevations, sections, D&AS where required.
Part L thermal, Part B fire, Part M accessibility, structural strategy.
Steel beam, foundation, lintel design. Chartered engineer sign-off.
Party Wall notices where needed; Thames Water Build Over Agreement where within 3m of a public sewer.
Single planning or building-regs submission.
Planning + building regs + structural.
Listed, conservation or complex sites.
Because DA6 is a settled family suburb of inter-war bay-fronted semis around Bexleyheath — ideal for rear and side extensions and hip-to-gable loft conversions. With few conservation constraints, much of the work runs on the Permitted Development route, confirmed with a Lawful Development Certificate.
Usually yes on the semis — a hip-to-gable plus rear dormer within the 50 cubic metre volume allowance, confirmed by a Lawful Development Certificate. We check the roof head height and draw the scheme for Building Control too, which is essential for the new floor and protected stair.
Often, on the wider semi plots — a wrap-around ground-floor extension or a two-storey side addition, subject to Bexley's design and neighbour-amenity policy. Properties near the protected Red House setting at Upton face extra care. We design within those limits and produce both drawing sets together.
DA6 offers strong value for south-east London families.
Bexley 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 DA6 address.
For a DA6 project across Bexleyheath, Upton, Barnehurst fringe, Welling 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 Bexley Council (8 weeks for a householder application). We carry the Bexleyheath application through every officer query to the decision.
Bexleyheath (DA6) sits primarily in Bexley, so applications are decided by Bexley Council. Conservation areas within DA6 include Red House (Upton), 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 house extension drawings in Bexleyheath — 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 Bexley Council Building Control or an approved inspector. On DA6'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 DA6 homes.
Neighbouring authorities set their own policies, and the boundary rarely matches the postcode. Full service listings for DA5, DA7 and DA15.
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
Every DA6 postcode district we draw in, the stock that dominates it and the authority that validates a house extension there. DA6 fees below are the statutory England rates for 2026, not house extension estimates.
| Postcode | Area | Dominant stock | What it means for a house extension |
|---|---|---|---|
| DA6 | Bexleyheath | 1930s semi-detached | DA6 covers Bexleyheath only; Bexley Council handles the house extension. |
| DA1 | Crayford / Dartford fringe | Victorian terraces, 1930s semi-detached | Adjoining district to DA6, also inside Bexley for house extension purposes. |
| DA5 | Old Bexley | Georgian villas, Victorian cottages | Adjoining district to DA6, also inside Bexley for house extension purposes. |
| DA7 | Bexleyheath / Barnehurst | 1930s semi-detached | Adjoining district to DA6, also inside Bexley for house extension purposes. |
Roof pitch, wall build-up and plot depth change every few DA6 streets, and each one changes what a house extension can achieve at that address.
Conservation areas covering DA6 (Bexleyheath): Bexley Council runs 16, and Bexley Village, Old Bexley, Crayford are the ones DA6 (Bexleyheath) owners meet most. A house extension inside a DA6 (Bexleyheath) conservation area loses permitted development, so the DA6 (Bexleyheath) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Bexley Village a house extension is judged on the street elevation first.
DA6 (Bexleyheath) permitted development status: there is no borough-wide direction from Bexley Council, so a house extension at a DA6 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a DA6 (Bexleyheath) sale to argue it later.
The building fabric around DA6 (Bexleyheath): 1930s semi-detached dominates; Victorian cottages in Bexley Village and Crayford; post-war estates in Thamesmead and Erith. Outer south-east London suburban; very permissive planning environment; strong PD uptake for extensions and loft conversions. A house extension in DA6 (Bexleyheath) 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 Bexley Council.
Sources for this DA6 house extension 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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