House Extensions · TW10 Richmond
Fixed-fee house extension drawings for Richmond Hill, Petersham, Ham, Ham Common in the TW10 postcode, drawn by an MCIAT-chartered architectural technologist and submitted to Richmond Council. Richmond upon Thames protects the Richmond Hill, Petersham and Ham Common conservation areas, with Richmond Park, the protected Petersham view and Ham House (National Trust) shaping policy across a very high-value area.
MCIAT chartered drawings for planning, building regs, lofts and extensions — fixed fees 30% below typical London architects. Tell us what you need and we’ll reply the same working day.
House extensions in Richmond are dominated by single-storey rear and side-return additions on TW10's georgian and victorian villas and terraces around, with double-storey and wrap-around schemes where the plot allows. Richmond Council weighs depth, height and neighbour daylight; many extensions across Richmond Hill, Petersham, Ham, Ham Common 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 georgian and victorian villas and terraces around typical of Richmond.
Across Richmond Hill, Petersham, Ham, Ham Common in TW10, the dominant property is georgian and victorian villas and terraces around richmond hill and petersham, with cottages on ham common — a premium green market. 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 Richmond Council judges each on design quality and neighbour impact. We survey the specific Richmond property, confirm the planning route — Permitted Development, a Lawful Development Certificate, or full planning — and draw a council-ready set tailored to the TW10 streetscape.
Housing stock in TW10: Georgian and Victorian villas and terraces around Richmond Hill and Petersham, with cottages on Ham Common — a premium green market.
Within the district: Richmond Hill, Petersham, Ham, Ham Common.
Streets we know in TW10: the Richmond Hill terraces, the Petersham village lanes and the cottages around Ham Common. Each road has its own building line, boundary treatment and precedent that Richmond Council weighs when assessing a house extension drawings scheme.
Conservation areas: Richmond Hill, Petersham, Ham Common, Ham House. Inside these, most external work needs full planning and a Heritage Statement.
Getting around TW10: Richmond station (District line, Overground, South Western Railway) serves TW10.
Property values: around £500,000 for a flat and £900,000-£2m+ for a house — a useful gauge of the build value an extension or loft adds in TW10.
Borough character: Highest conservation area coverage in London; Royal Parks and Thames corridor add heritage layers; design quality heavily scrutinised.
Measured existing survey, photographic record, Article 4 and conservation check specific to Richmond 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.
Yes, but almost all of TW10 sits in the Richmond Hill, Petersham or Ham Common conservation areas, where extensions and roof changes need full planning with a Heritage Statement. The protected view from Richmond Hill and the setting of Richmond Park add further sensitivity. We design to the period and submit to Richmond.
Proximity to Richmond Park and the legally protected view from Richmond Hill mean the council carefully assesses height, roofline and visibility for properties on the slope. We design within those constraints and explain at survey how your position affects what is achievable.
Yes — the Ham Common conservation area and the setting of Ham House protect the village character, so even modest external changes are assessed for their heritage effect. We produce a sympathetic design and a Heritage Statement and handle the Richmond application.
With houses commonly £900,000 to well over £2m, a consented extension or loft adds significant value in one of London's most desirable green markets. The planning bar is high, so professional drawings and heritage justification matter — our fixed fee keeps the cost predictable.
Our fixed fee for house extension drawings in Richmond starts at £1,225 — no hourly billing. With Richmond property at around £500,000 for a flat and £900,000-£2m+ for a house, the professional drawing fee is a small fraction of the value the work adds to TW10's georgian and victorian villas and terraces around. Richmond Council charges its own statutory application fee on top (currently £258 for a householder planning application, £578 for a full application). We quote the drawings as one fixed price and the free site survey covers every TW10 address.
For a TW10 project across Richmond Hill, Petersham, Ham, Ham Common, 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 Richmond Council (8 weeks for a householder application). We carry the Richmond application through every officer query to the decision.
Richmond (TW10) sits primarily in Richmond upon Thames, so applications are decided by Richmond Council. Article 4 in force in the borough: No. Conservation areas within TW10 include Richmond Hill, Petersham, Ham Common, Ham House, 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 Richmond — 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 Richmond Council Building Control or an approved inspector. On TW10'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. With Richmond (TW10) property at around £500,000 for a flat and £900,000-£2m+ for a house, a well-designed extension or loft typically returns more than it costs in added floor area and sale value, while our fixed drawing fee from £1,225 keeps the professional cost predictable. 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 TW10 homes.
From £840.
From £840.
From £1,225.
From £1,575.
From £995.
From £1,950.
From £350.
From £540.
From £450.
From £1,225.
Pick a slot that suits you. No obligation and no sales pressure — just straight answers on your planning route, fixed fee and timescale.
Every TW10 postcode district we draw in, the stock that dominates it and the authority that validates a house extension there. TW10 fees below are the statutory England rates for 2026, not house extension estimates.
| Postcode | Area | Dominant stock | What it means for a house extension |
|---|---|---|---|
| TW10 | Richmond / Ham | Georgian terraces, Victorian villas | TW10 covers Richmond / Ham only; Richmond Council handles the house extension, and Richmond / Ham case officers apply the TW10 conservation-area map. |
| TW10 | Richmond | Georgian terraces, Victorian villas | Richmond sits inside TW10; house extension proposals here are determined by Richmond Council. |
| TW10 | Ham | Georgian villas, post-war estates | Ham sits inside TW10; house extension proposals here are determined by Richmond Council. |
| SW13 | Barnes | Georgian villas, Edwardian terraces | Adjoining district to TW10, also inside Richmond upon Thames for house extension purposes. |
| SW14 | Mortlake / East Sheen | Edwardian villas, 1930s semi-detached | Adjoining district to TW10, also inside Richmond upon Thames for house extension purposes. |
| TW1 | Twickenham | Georgian fragments, Victorian terraces, Edwardian villas | Adjoining district to TW10, also inside Richmond upon Thames for house extension purposes. |
| TW2 | Twickenham / Whitton | Georgian fragments, Victorian terraces, Edwardian villas | Adjoining district to TW10, also inside Richmond upon Thames for house extension purposes. |
Roof pitch, wall build-up and plot depth change every few TW10 streets, and each one changes what a house extension can achieve at that address.
Conservation areas covering TW10 (Richmond / Ham): Richmond Council runs 72, and Richmond Green, Kew Green, Hampton Wick are the ones TW10 (Richmond / Ham) owners meet most. A house extension inside a TW10 (Richmond / Ham) conservation area loses permitted development, so the TW10 (Richmond / Ham) submission is a householder application at £258 decided in 8 weeks — not a £120 prior approval decided in 6 weeks. In Twickenham Riverside a house extension is judged on the street elevation first.
TW10 (Richmond / Ham) permitted development status: there is no borough-wide direction from Richmond Council, so a house extension at a TW10 address is normally still permitted development. We certify that with a £129 Lawful Development Certificate rather than leaving a TW10 (Richmond / Ham) sale to argue it later.
TW10 (Richmond / Ham) housing stock: Georgian in Richmond Green and Twickenham; Edwardian villas in Barnes and East Sheen; 1930s semi-detached in Whitton; riverside cottages along the Thames. Highest conservation area coverage in London; Royal Parks and Thames corridor add heritage layers; design quality heavily scrutinised. Read that before choosing a house extension route in TW10 (Richmond / Ham) — construction, not postcode, sets what is achievable. House extensions in TW10 (Richmond / Ham) start at £1,225 on a fixed fee, or £1,750 for the Complete package covering both Richmond Council submissions.
Sources for this TW10 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.
Free fixed quote in 60 seconds. From £1,225. MCIAT chartered.
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