Architectural technology in Hounslow

Which postcode districts around Hounslow do we cover for drawing package work?

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.

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

Does Hounslow planning policy restrict a drawing package?

Hounslow conservation designations: there are 30 across Hounslow Council, Bedford Park, Old Isleworth, Brentford among them. Designation costs a Hounslow owner the permitted-development route: a drawing package then needs a £258 householder application over 8 weeks, in place of the £120 prior approval route that takes 6 weeks. Bedford Park is the Hounslow designation that most often changes a drawing package design.

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 £129 Lawful Development Certificate rather than leaving a Hounslow sale to argue it later.

What Hounslow is built from: 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. That mix decides the drawing package route in Hounslow more than the postcode does. Our fixed fee for architectural drawings in Hounslow starts at £840, against £1,750 for the Complete package that carries a Hounslow scheme through Hounslow Council planning and building regulations together.

Who decides a drawing package on the edge of 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 — cross the Hounslow boundary and Ealing Council takes the drawing package instead, applying 30 conservation areas of its own around W3. We re-price architectural drawings at the Hounslow edge because Ealing policy and Hounslow policy rarely align on drawing package depth.
• Hammersmith and Fulham — the Hammersmith and Fulham boundary runs against Hounslow, so a drawing package a street from Hounslow is decided by Hammersmith & Fulham Council instead. Hammersmith and Fulham runs 45 conservation areas across W6 and its neighbours, which is why architectural drawings priced for Hounslow are re-checked against Hammersmith and Fulham policy whenever the Hounslow address sits on that edge.
• Richmond upon Thames — cross the Hounslow boundary and Richmond Council takes the drawing package instead, applying 72 conservation areas of its own around SW13. We re-price architectural drawings at the Hounslow edge because Richmond upon Thames policy and Hounslow policy rarely align on drawing package depth.

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.