London Borough of Hounslow
Planning & Conservation in Hounslow
The London Borough of Hounslow includes Chiswick, a leafy, family-oriented part of west London. We design extensions, loft conversions and refurbishments across the area, within its conservation context.
Chiswick, within the London Borough of Hounslow, is known for its Victorian and Edwardian houses, the Arts-and-Crafts streets of Bedford Park and a desirable riverside setting. It has notable conservation areas where character is closely protected and permitted development may be restricted.
We design family-home extensions and refurbishments to manage party wall, drainage and amenity considerations, and prepare the drawings needed to obtain approval and build. The position depends on the property and any conservation designation, which we confirm.
How planning works here
London Borough of Hounslow: process for homeowners
Hounslow covers Chiswick and other west London neighbourhoods with multiple distinct conservation areas — confirm which CA appraisal applies before design freezes.
Householder process
1. Which conservation area?
Chiswick alone spans several CAs (e.g. Chiswick High Road, Bedford Park, Old Chiswick, Turnham Green and others). Each has its own boundary and appraisal. Confirm the designation for the pin.
2. PD vs application
Flats lack householder PD for extensions. CA and Article 4 controls can remove PD for houses. When uncertain, design for a householder application or LDC strategy.
3. Terrace and villa amenity
Design depth and height against neighbour windows and host roof form. Party wall dual flanks are common on terraces.
4. Validation and technical stages
Complete drawings and forms; then building regulations, drainage and freeholder tracks where relevant.
Project types & evidence
Extensions and lofts
Character differs between villa streets and denser terraces — elevation language should match the host street, not a generic west London template.
CA character and living conditions
Appraisals and neighbour amenity are the usual core. Wrong CA narrative weakens heritage-aware schemes.
Package
Existing/proposed plans, elevations, sections; location/block plans; CA context where required.
Official sources used on this page
Policy and Article 4 maps change. Confirm designations for your exact address on the council’s live planning map before relying on any general description.
Areas we cover
Prime neighbourhoods in Hounslow
Planning in Hounslow: FAQs
Is my Chiswick home in a conservation area?
Do Chiswick loft conversions need planning permission?
Planning a project in Hounslow?
Send us the address, property type and a short description of the work. We will advise whether you are likely to need planning drawings, building regulations drawings, listed building advice or leasehold approval drawings.