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Architectural drawings · Hounslow

Architectural drawings in Chiswick

Fixed-fee planning, building regulations, loft, extension and mansard drawings for properties in Chiswick (W4). MCIAT chartered. 30% below typical London architect rates.

Chiswick at a glance

Borough
Hounslow
Postcodes
W4
Dominant stock
Edwardian villas, Victorian terraces
Local landmarks
Chiswick House, Turnham Green
Article 4 in force
No
Conservation areas in borough
30
Chartered architectural technologist at work — architectural drawings in Hounslow
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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.

  • MCIAT chartered
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  • Fixed fees from £840

Local context

Why Chiswick needs a specialist

Chiswick is Edwardian villas, conservation. The streetscape is dominated by edwardian villas, victorian terraces, which means design decisions — roofscape, rear glazing, side returns, mansards — must respect the period rhythm of the row. Hounslow planning (Hounslow Council) decides applications here. Most permitted development rights apply normally in Hounslow for residential extensions.

Services in Chiswick

Frequently asked in Chiswick

Chiswick planning questions

Do I need planning permission for an extension in Chiswick?

Chiswick sits within Hounslow, so applications are decided by Hounslow Council. Most single-storey rear extensions and side-returns on terraced or semi-detached homes in Chiswick 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: No. We check eligibility free at the site visit.

What's the dominant housing stock in Chiswick?

Chiswick is characterised by Edwardian villas, conservation. The dominant stock is Edwardian villas, 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.

How long does a planning application take in Chiswick?

Hounslow 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 Hounslow.

How much does a loft conversion cost in Chiswick?

Loft conversion drawings in Chiswick 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.

Are there conservation areas in Chiswick?

Hounslow has 30 designated conservation areas. Nearest to Chiswick: Chiswick. 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.

Nearby in Hounslow

Other neighbourhoods we cover

Postcodes covering Chiswick

W4

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Where in Chiswick does a drawing package actually get determined?

Every Chiswick postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. Chiswick fees below are the statutory England rates for 2026, not drawing package estimates.

PostcodeAreaDominant stockWhat it means for a drawing package
W4Chiswick / Bedford ParkEdwardian villas, Victorian terracesChiswick / Bedford Park is split at W4. Either Hounslow Council or Ealing Council can determine a drawing package here, so the W4 address is checked against both policies maps first.
TW8BrentfordGeorgian fragments, Victorian terraces, new-buildNeighbouring Brentford, where drawing package work is handled by the same Hounslow Council case officers.
TW7IsleworthGeorgian and Victorian terracesNeighbouring Isleworth, where drawing package work is handled by the same Hounslow Council case officers.
TW3Hounslow1930s semi-detached, post-war flatsNeighbouring Hounslow, where drawing package work is handled by the same Hounslow Council case officers.
TW13Feltham1930s semi-detached, post-war estatesNeighbouring Feltham, where drawing package work is handled by the same Hounslow Council case officers.
TW13Hanworth1930s semi-detachedNeighbouring Hanworth, where drawing package work is handled by the same Hounslow Council case officers.
W4Turnham GreenEdwardian villasNeighbouring Turnham Green, where drawing package work is handled by the same Hounslow Council case officers.

Which Chiswick neighbourhoods suit a drawing package best?

Roof pitch, wall build-up and plot depth change every few Chiswick streets, and each one changes what a drawing package can achieve at that address.

Does Chiswick planning policy restrict a drawing package?

Conservation areas covering Chiswick: Hounslow Council runs 30, and Old Isleworth, Brentford, Chiswick are the ones Chiswick owners meet most. A drawing package inside a Chiswick conservation area loses permitted development, so the Chiswick submission is a householder application at £258 decided in 8 weeks — not a £120 prior approval decided in 6 weeks. In Bedford Park a drawing package is judged on the street elevation first.

Article 4 and your Chiswick drawing package: Hounslow Council has made no borough-wide direction, so permitted development for a drawing package in Chiswick generally survives outside Chiswick conservation areas and listed curtilages. A Lawful Development Certificate at £129 is how a W4 owner records that a drawing package was lawful.

Chiswick housing stock: Edwardian villas in Chiswick and Turnham Green; Georgian in Isleworth; 1930s semi-detached in Hounslow and Feltham; riverside new-build in Brentford. Chiswick is one of west London's most conservation-controlled areas; outer Hounslow is permissive suburban. Read that before choosing a drawing package route in Chiswick — construction, not postcode, sets what is achievable. Architectural drawings in Chiswick start at £840 on a fixed fee, or £1,750 for the Complete package covering both Hounslow Council submissions.

What happens if a Chiswick property sits on a boundary?

Sources for this Chiswick 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.

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Guides & next steps

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