House Extension Drawings in Brentford |

No Article 4 Direction covers Hounslow, which keeps the Brentford permitted-development route open on unlisted houses. What defines Brentford is that it is Georgian fragments, riverside new-build, and design decisions here answer to that rather than to a pattern book. Brentford sits close enough to Brentford that designation should be checked at the outset, not after design. Whether a Brentford plot sits inside the boundary changes the whole route.

Article 4 coverage across TW8 is confirmed before we quote, not after. On Brentford stock the constraint is physical before it is planning: the georgian fragments fixes the rear wall line and the Kew Bridge roofline caps the ridge. The borough policy layer over every TW8 address is set out on Hounslow planning. The Brentford survey then carries into architectural drawings in Brentford if the project runs on to construction.

Before Hounslow Council determines anything, London Borough of Hounslow has to validate the Brentford submission — one to two weeks, longer if a plan is missing. The Brentford job starts with a laser survey, not a sketch.

Statutory periods: 8 weeks from validation for a householder application, 13 weeks for a major scheme, 6 weeks for prior approval with a 21 days neighbour consultation, and 5 weeks for a full plans building control submission. A party structure notice requires one month notice and two months where excavation is involved.

Neighbour consultation on a Brentford case runs 21 days from registration. Every Brentford submission leaves here as a PDF set at the scales Hounslow Council requires.

The Brentford consultation period is where a weak scheme is exposed. The Brentford survey records every opening, level change and structural wall.

On Brentford terraces the flank wall is usually shared, so the party wall notice should go out well before work starts. Once consent is granted, planning permission follows for the TW8 property.

Brentford is characterised by georgian fragments, victorian terraces, new-build, concentrated across TW8 in the Brentford area. The georgian fragments that dominates Brentford behaves differently from the borough average, and the drawings follow the building rather than a house type. On the Brentford stock specifically: georgian rear elevations here are usually the listed or locally listed face of the building, so a glazed link and a lightweight rear addition tend to fare better than a full-width box. For a Brentford owner it decides the structural spec. Massing on a Brentford scheme is argued against the Kew Bridge street rhythm.

Hounslow Council assesses Brentford basements on standard grounds. building regulations drawings for TW8 properties and loft conversion drawings build on the existing Brentford survey data.

What the Brentford drawing pack contains

No add-ons later — the Brentford scope is set out here.

• existing and proposed ground-floor plans for the Brentford property
• proposed rear elevation
• long section through the extension
• site and block plans
• party wall position drawing

Streets and landmarks we survey around Brentford

• Syon Park — front-to-back level changes that drive the Syon Park section drawings.
• Gunnersbury Park — roof profiles that set the ridge datum Hounslow Council measures a Gunnersbury Park dormer against.
• Kew Gardens — gardens deep enough for the 8 weeks householder route on a Kew Gardens plot.
• Griffin Park — gardens deep enough for the 8 weeks householder route on a Griffin Park plot.
• Kew Bridge — a Brentford roof extension is judged against the datum it sets.
• Syon House — a Brentford roof extension is judged against the datum it sets.
• Brentford Library — the surrounding georgian fragments takes its scale from it.
• Kew Bridge — a Brentford roof extension is judged against the datum it sets.
• Brent Reservoir — it anchors the Brentford streetscape argument in an officer report.
• Eton College — proposals within its setting are drawn with the context elevation included.

Getting to a Brentford survey

Surveyors travel to TW8 addresses from the studio; the nearest stations are Boston Manor, Brentford, Northfields, South Ealing. Appointments are booked in Brentford on weekdays and Saturdays, and the measured survey of a standard georgian fragments takes two to three hours.

Where Brentford sits

Brentford lies 8 miles (13 km) west of Charing Cross, on Ordnance Survey grid reference TQ1878, with the River Brent shaping drainage and flood-risk questions on lower-lying TW8 plots, inside the Brentford and Isleworth parliamentary constituency. The TW8 block plan is set out from that grid square. Source.

Practical detail for a Brentford submission: surveyors travel in through Boston Manor and Brentford and Northfields and South Ealing; addresses are written to BRENTFORD; dialling code 020; heritage assets close by include Grade II listed building. Site plans are drawn to the address as Hounslow Council holds it.

Brentford postcode coverage

The districts we work in here: TW8 (Brentford), which Brentford holds on its own. Which side of the TW8 line a property sits on changes the Hounslow constraints that apply.

Streets and stations in Brentford

The Brentford streets on our books include Syon Park, Gunnersbury Park, Kew Gardens and Griffin Park. most Brentford sites are within walking distance of Boston Manor or Brentford or Northfields. and Grade II listed building is listed, which pulls neighbouring TW8 proposals into a setting assessment.

Areas we cover around Brentford

Brentford aside, we also cover Harefield (UB9), Yiewsley (UB7), Eastcote (HA5), Hillingdon (UB10), Ealing Broadway (W5), Acton (W3) and the Hillingdon boundary.

The fee follows the building. On Brentford stock that means party walls, levels, and the Brentford heritage question.

Statutory application fees are set by regulation, not by the council: £548 householder, £610 for a new dwelling, £274 for a lawful development certificate, £249 for prior approval.

None of the London Borough of Hounslow statutory fee reaches us on a Brentford job. London planning approval-rate dataset · Hounslow planning · our London house extension drawings service · house extension drawings in Harefield.

The person drawing your Brentford scheme holds MCIAT charter and carries the technical responsibility for it. Marginal TW8 sites get checked with Hounslow Council first; a refusal costs far more than the advice fee.

Drawings are produced by chartered members of the Chartered Institute of Architectural Technologists (MCIAT), the professional body for technical design and building-regulations competence. First-time approval across our London caseload is 98%. Statutory fees shown are those in force in England in 2026 under the Town and Country Planning (Fees for Applications) Regulations. Confirm your local authority at gov.uk and submission requirements on the Planning Portal. Studio: 71–75 Shelton Street, London WC2H 9JQ.

Send the Brentford address; we will come back with the route and the fee. This Brentford page was reviewed in August 2026.