Fixed-fee planning, building regulations, loft, extension and mansard drawings for properties in Clapham Junction (SW11). MCIAT chartered. 30% below typical London architect rates.
Clapham Junction is Victorian terraces, transport hub. The streetscape is dominated by victorian terraces, mansion blocks, 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 £450. Party wall services delivered by an MCIAT chartered team.
From £1,225. Rear dormer drawings delivered by an MCIAT chartered team.
Clapham Junction 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 Clapham Junction 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.
Clapham Junction is characterised by Victorian terraces, transport hub. The dominant stock is Victorian terraces, mansion blocks. 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 Clapham Junction 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 Clapham Junction: 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.
Fixed fee. MCIAT chartered. 98% first-time approval rate.
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