Architectural technology in Hounslow

Where in Hounslow does a drawing package actually get determined?

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

How does a drawing package 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 drawing package can achieve at that address.

• Chiswick (W4) — Edwardian villas, conservation defines Chiswick, where edwardian villas, victorian terraces set what a drawing package can do. Any Chiswick drawing package is validated by Hounslow Council, with Chiswick House the usual Chiswick reference point on the site plan.
• Brentford (TW8) — drawing package work in Brentford means georgian fragments, victorian terraces, new-build. Brentford is Georgian fragments, riverside new-build. Hounslow Council decides the Brentford application, and Kew Bridge anchors the Brentford location plan.
• Isleworth (TW7) — Georgian and Victorian terraces defines Isleworth, where georgian and victorian terraces set what a drawing package can do. Any Isleworth drawing package is validated by Hounslow Council, with Old Isleworth the usual Isleworth reference point on the site plan.
• Hounslow (TW3) — 1930s semi-detached, post-war flats defines Hounslow, where 1930s semi-detached, post-war flats set what a drawing package can do. Any Hounslow drawing package is validated by Hounslow Council, with Hounslow Central the usual Hounslow reference point on the site plan.
• Feltham (TW13) — a drawing package in Feltham starts from 1930s semi-detached, post-war estates, and Feltham reads as 1930s semi-detached, post-war estates. in TW13. Hounslow Council assesses Feltham architectural drawings against its own Feltham character guidance, and the location plan we draw for Feltham references Feltham station.
• Hanworth (TW13) — drawing package work in Hanworth means 1930s semi-detached. Hanworth is 1930s semi-detached. Hounslow Council decides the Hanworth application, and Hanworth Park anchors the Hanworth location plan.
• Turnham Green (W4) — a drawing package in Turnham Green starts from edwardian villas, and Turnham Green reads as Edwardian villas, conservation. in W4. Hounslow Council assesses Turnham Green architectural drawings against its own Turnham Green character guidance, and the location plan we draw for Turnham Green references Turnham Green.

How do conservation areas and Article 4 affect a drawing package in Hounslow?

How designation changes a Hounslow drawing package: Hounslow Council maintains 30 conservation areas, including Bedford Park, Old Isleworth, Brentford. Inside any of them a Hounslow drawing package cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Old Isleworth sets the tone for Hounslow casework.

Hounslow permitted development status: there is no borough-wide direction from Hounslow Council, so a drawing package at a W4 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a Hounslow sale to argue it later.

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 drawing package 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 — cross the Hounslow boundary and Hillingdon Council takes the drawing package instead, applying 29 conservation areas of its own around HA4. We re-price architectural drawings at the Hounslow edge because Hillingdon policy and Hounslow policy rarely align on drawing package depth.
• Ealing — adjoining Hounslow, with 30 conservation areas centred on W3. A drawing package on the far side of the Hounslow line is determined by Ealing Council, so the Hounslow quote for architectural drawings is checked against Ealing guidance before it is issued.
• Hammersmith and Fulham — adjoining Hounslow, with 45 conservation areas centred on W6. A drawing package on the far side of the Hounslow line is determined by Hammersmith & Fulham Council, so the Hounslow quote for architectural drawings is checked against Hammersmith and Fulham guidance before it is issued.
• Richmond upon Thames — adjoining Hounslow, with 72 conservation areas centred on SW13. A drawing package on the far side of the Hounslow line is determined by Richmond Council, so the Hounslow quote for architectural drawings is checked against Richmond upon Thames guidance before it is issued.

Sources for this Hounslow 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.