Fixed-fee planning, building regulations, loft, extension and mansard drawings for properties in Earlsfield (SW18). MCIAT chartered. 30% below typical London architect rates.
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.
Earlsfield is Victorian terraced streets. The streetscape is dominated by victorian terraces, which means design decisions — roofscape, rear glazing, side returns, mansards — must respect the period rhythm of the row. Wandsworth planning (Wandsworth Council) decides applications here. Article 4 for HMO conversions covering the whole borough.
From £840. Planning permission drawings delivered by an MCIAT chartered team.
From £840. Building regulations drawings delivered by an MCIAT chartered team.
From £1,225. Loft conversion drawings delivered by an MCIAT chartered team.
From £1,225. House extension drawings delivered by an MCIAT chartered team.
From £1,575. Mansard roof extensions delivered by an MCIAT chartered team.
From £995. Garage conversion drawings delivered by an MCIAT chartered team.
From £1,950. Basement conversion drawings delivered by an MCIAT chartered team.
From £350. Structural calculations delivered by an MCIAT chartered team.
From £540. Measured building survey delivered by an MCIAT chartered team.
From £450. Party wall services delivered by an MCIAT chartered team.
From £1,225. Rear dormer drawings delivered by an MCIAT chartered team.
Earlsfield sits within Wandsworth, so applications are decided by Wandsworth Council. Most single-storey rear extensions and side-returns on terraced or semi-detached homes in Earlsfield fall under Permitted Development — up to 3m deep (attached) or 4m (detached), under 4m high. Flats, listed buildings and conservation areas always require full planning. Article 4 status here: Yes. We check eligibility free at the site visit.
Earlsfield is characterised by Victorian terraced streets. The dominant stock is Victorian terraces. We've drawn extensions and lofts for every period represented here — Victorian rear additions, Edwardian side returns, 1930s wrap-arounds, and contemporary infill where the streetscape allows.
Wandsworth Council statutory determination is 8 weeks for householder applications. Validation typically adds 1–2 weeks. From your first call to a decision, expect 12–14 weeks total: 1 week measured survey, 2 weeks design, 1–2 weeks validation, 8 weeks determination. We've achieved a 98% first-time approval rate across Wandsworth.
Loft conversion drawings in Earlsfield start at £1,225 for planning + building regs combined. Construction cost (separate from drawings) is £45,000–£75,000 for a standard rear dormer on a Victorian or Edwardian terrace, £65,000–£95,000 for a hip-to-gable plus dormer. We quote drawings as a fixed fee — no hourly creep.
Wandsworth has 45 designated conservation areas. Nearest to Earlsfield: Wandsworth Common. In a conservation area, full planning is required for most external work (including roof additions, rendering, replacement windows). We prepare a Heritage Statement covering the conservation area's character appraisal.
Pick a slot that suits you. No obligation and no sales pressure — just straight answers on your planning route, fixed fee and timescale.
Every Earlsfield postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. Earlsfield fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| SW18 | Wandsworth / Earlsfield / Southfields | Victorian terraces | SW18 covers Wandsworth / Earlsfield / Southfields only; Wandsworth Council handles the drawing package, and Wandsworth / Earlsfield / Southfields case officers apply the SW18 conservation-area map. |
| SW11 | Clapham Junction | Victorian terraces, mansion blocks | Neighbouring Clapham Junction, where drawing package work is handled by the same Wandsworth Council case officers. |
| SW8 | Battersea | Victorian terraces, new-build apartments | Neighbouring Battersea, where drawing package work is handled by the same Wandsworth Council case officers. |
| SW12 | Balham | Victorian and Edwardian terraces | Neighbouring Balham, where drawing package work is handled by the same Wandsworth Council case officers. |
| SW17 | Tooting | Edwardian terraces | Neighbouring Tooting, where drawing package work is handled by the same Wandsworth Council case officers. |
| SW17 | Wandsworth Common | Victorian villas and terraces | Neighbouring Wandsworth Common, where drawing package work is handled by the same Wandsworth Council case officers. |
| SW15 | Putney | Edwardian terraces, Victorian villas, mansion blocks | Neighbouring Putney, where drawing package work is handled by the same Wandsworth Council case officers. |
| SW18 | Southfields | 1930s semi-detached, Edwardian terraces | Neighbouring Southfields, where drawing package work is handled by the same Wandsworth Council case officers. |
| SW18 | Tonsleys | Victorian terraces | Neighbouring Tonsleys, where drawing package work is handled by the same Wandsworth Council case officers. |
| SW12 | Nightingale Triangle | Edwardian terraces and villas | Neighbouring Nightingale Triangle, where drawing package work is handled by the same Wandsworth Council case officers. |
| SW15 | Roehampton | Post-war estates, Georgian villas | Neighbouring Roehampton, where drawing package work is handled by the same Wandsworth Council case officers. |
Roof pitch, wall build-up and plot depth change every few Earlsfield streets, and each one changes what a drawing package can achieve at that address.
How designation changes a Earlsfield drawing package: Wandsworth Council maintains 45 conservation areas, including Wandsworth Common, Clapham Common West, Tonsley. Inside any of them a Earlsfield drawing package cannot rely on permitted development, and the route becomes a £258 householder application determined in 8 weeks rather than a £120 prior approval in 6 weeks. Clapham Common West sets the tone for Earlsfield casework.
Article 4 and your Earlsfield drawing package: Article 4 for HMO conversions covering the whole borough. At a SW18 address that matters twice over, because Wandsworth Council applies the direction unevenly across Earlsfield — we read the Earlsfield policies map for the exact SW18 address before quoting architectural drawings.
What Earlsfield is built from: Extensive Victorian terraced streets — the classic London side-return extension opportunity; Edwardian villas around the commons; 1930s semi-detached in Southfields. Family-oriented, high side-return extension and loft conversion rates; planning department experienced with Victorian terrace modifications. That mix decides the drawing package route in Earlsfield more than the postcode does. Our fixed fee for architectural drawings in Earlsfield starts at £840, against £1,750 for the Complete package that carries a Earlsfield scheme through Wandsworth Council planning and building regulations together.
Sources for this Earlsfield drawing 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.
Fixed fee. MCIAT chartered. 98% first-time approval rate.
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