Garage Conversion Drawings in Hounslow

Which Hounslow postcodes does this garage conversion service cover?

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

How does a garage conversion differ street by street across Hounslow?

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

• Chiswick (W4) — Edwardian villas, conservation defines Chiswick, where edwardian villas, victorian terraces set what a garage conversion can do. Victorian terraces here rarely have an integral garage across W4. Any Chiswick garage conversion is validated by Hounslow Council, with Chiswick House the usual Chiswick reference point on the site plan.
• Brentford (TW8) — garage conversion work in Brentford means georgian fragments, victorian terraces, new-build. Brentford is Georgian fragments, riverside new-build. Georgian houses here predate the garage throughout TW8. Hounslow Council decides the Brentford application, and Kew Bridge anchors the Brentford location plan.
• Isleworth (TW7) — garage conversion work in Isleworth means georgian and victorian terraces. Isleworth is Georgian and Victorian terraces. Georgian houses here predate the garage throughout TW7. Hounslow Council decides the Isleworth application, and Old Isleworth anchors the Isleworth location plan.
• Hounslow (TW3) — garage conversion work in Hounslow means 1930s semi-detached, post-war flats. Hounslow is 1930s semi-detached, post-war flats. The integral and attached garages on these 1930s semis are the classic conversion — usually internal work only throughout TW3. Hounslow Council decides the Hounslow application, and Hounslow Central anchors the Hounslow location plan.
• Feltham (TW13) — a garage conversion in Feltham starts from 1930s semi-detached, post-war estates, and Feltham reads as 1930s semi-detached, post-war estates. The integral and attached garages on these 1930s semis are the classic conversion — usually internal work only in TW13. Hounslow Council assesses Feltham garage conversions against its own Feltham character guidance, and the location plan we draw for Feltham references Feltham station.
• Hanworth (TW13) — garage conversion work in Hanworth means 1930s semi-detached. Hanworth is 1930s semi-detached. The integral and attached garages on these 1930s semis are the classic conversion — usually internal work only throughout TW13. Hounslow Council decides the Hanworth application, and Hanworth Park anchors the Hanworth location plan.
• Turnham Green (W4) — Edwardian villas, conservation defines Turnham Green, where edwardian villas set what a garage conversion can do. Edwardian houses here sometimes carry a detached garage at the end of the plot across W4. Any Turnham Green garage conversion is validated by Hounslow Council, with Turnham Green the usual Turnham Green reference point on the site plan.

How do conservation areas and Article 4 affect a garage conversion in Hounslow?

Conservation areas covering Hounslow: Hounslow Council runs 30, and Bedford Park, Old Isleworth, Brentford are the ones Hounslow owners meet most. A garage conversion inside a Hounslow conservation area loses permitted development, so the Hounslow submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Chiswick a garage conversion is judged on the street elevation first.

No blanket Article 4 over Hounslow: Hounslow Council has not withdrawn permitted development across Hounslow, so a garage conversion outside a Hounslow conservation area usually keeps it. The £274 Lawful Development Certificate is still the document a W4 owner wants on file.

The building fabric around Hounslow: 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. A garage conversion in Hounslow 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 Hounslow Council.

Which neighbouring authorities border Hounslow?

• Hillingdon — adjoining Hounslow, with 29 conservation areas centred on HA4. A garage conversion on the far side of the Hounslow line is determined by Hillingdon Council, so the Hounslow quote for garage conversions is checked against Hillingdon guidance before it is issued.
• Ealing — the Ealing boundary runs against Hounslow, so a garage conversion a street from Hounslow is decided by Ealing Council instead. Ealing runs 30 conservation areas across W3 and its neighbours, which is why garage conversions priced for Hounslow are re-checked against Ealing policy whenever the Hounslow address sits on that edge.
• Hammersmith and Fulham — adjoining Hounslow, with 45 conservation areas centred on W6. A garage conversion on the far side of the Hounslow line is determined by Hammersmith & Fulham Council, so the Hounslow quote for garage conversions is checked against Hammersmith and Fulham guidance before it is issued.
• Richmond upon Thames — cross the Hounslow boundary and Richmond Council takes the garage conversion instead, applying 72 conservation areas of its own around SW13. We re-price garage conversions at the Hounslow edge because Richmond upon Thames policy and Hounslow policy rarely align on garage conversion depth.

Sources for this Hounslow garage conversion 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.