House Extension Drawings in Kenton |

No Article 4 Direction covers Harrow, which keeps the Kenton permitted-development route open on unlisted houses. Kenton is 1930s semi-detached; near Kenton station that context does most of the work in an officer report. Check Stanmore before assuming permitted development on a Kenton house; Harrow designates 29 such areas. That boundary is verified for the HA3 property at the outset.

Article 4 directions are checked street by street in Kenton; the borough-wide answer is rarely the whole answer. A HA3 survey answers most of it — where the 1930s semi-detached allows the rear wall to go. The borough policy layer over every HA3 address is set out on Harrow planning. The Kenton survey then carries into planning permission in Kenton if the project runs on to construction.

The HA3 bottleneck is validation. London Borough of Harrow needs one to two weeks, and a missing drawing resets it. Everything begins by measuring the Kenton property properly — openings, levels, structure — before a proposal exists.

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.

Officer queries on a Kenton application come to us, not to you. You get the full Kenton set as PDFs, plus CAD on request.

Neighbour comment is what shapes most Kenton decisions; policy rarely decides alone. The Kenton survey includes the boundary line and neighbouring window positions.

Late notices are what stall Kenton sites more than planning does. Once consent is granted, building regulations drawings follows for the HA3 property.

Kenton is characterised by 1930s semi-detached, concentrated across HA3 in the Harrow Weald / Kenton / Wealdstone area. Every Kenton scheme starts from what is actually there: 1930s semi-detached, surveyed to the millimetre before a proposal is drawn. On HA3 plots specifically, 1930s semis here have the deepest rear gardens in the area, which is why the 6 m and 8 m larger-home prior approval route gets used so often. On Kenton plots that shows up in the section drawings. Case officers at Harrow Council look first at whether a HA3 scheme keeps the eaves and ridge line of the Kenton row.

Harrow Council assesses Kenton basements on standard grounds. If the HA3 job later needs loft conversion drawings for HA3 properties or architectural drawings, the existing drawings already carry the measurements.

What the Kenton drawing pack contains

For a HA3 address the deliverables are fixed, not open-ended.

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

Streets and landmarks we survey around Kenton

• Hendon Park — gardens deep enough for the 8 weeks householder route on a Hendon Park plot.
• Kenton Road — frontages visible from the highway, so Stanmore materials detail governs the Kenton Road elevation.
• Edgware Road — frontages visible from the highway, so Stanmore materials detail governs the Edgware Road elevation.
• Northwick Park — closet wings that change how a rear extension meets the Northwick Park back addition.
• Mill Hill — shared flank walls, so Mill Hill party structure notices go out before work starts.
• Golders Green — shared flank walls, so Golders Green party structure notices go out before work starts.
• Kenton station — schemes in view of it attract closer officer scrutiny.
• Northwick Park Hospital — schemes in view of it attract closer officer scrutiny.
• St Gregory's Catholic Science College — nearby 1930s semi-detached takes its scale from this frontage.

Getting to a Kenton survey

Surveyors travel to HA3 addresses from the studio; the nearest stations are South Kenton station, Kenton station, Northwick Park, Northwick Park station. Appointments are booked in Kenton on weekdays and Saturdays, and the measured survey of a standard 1930s semi-detached takes two to three hours.

Where Kenton sits

on Ordnance Survey grid reference TQ175885, inside the Harrow East parliamentary constituency. That grid reference is not trivia — the Kenton site location plan is drawn over it, and Harrow Council validates the address against it. Source.

Practical detail for a Kenton submission: South Kenton station and Kenton station and Northwick Park and Northwick Park station put Kenton within easy reach; post town HARROW; dialling code 020; the listed stock near Kenton includes Grade II public house. Site plans are drawn to the address as Harrow Council holds it.

Kenton postcode coverage

Across HA3 (Harrow Weald / Kenton / Wealdstone), shared with Harrow Weald, Wealdstone the survey is the same; the Harrow policy overlay is not, and Harrow Council validates on the address.

Streets and stations in Kenton

Our HA3 caseload covers Hendon Park, Kenton Road, Edgware Road, Northwick Park, Mill Hill and Golders Green. most Kenton sites are within walking distance of South Kenton station or Kenton station or Northwick Park. and Grade II public house is listed, which pulls neighbouring HA3 proposals into a setting assessment.

Areas we cover around Kenton

Kensal Green (NW10), Willesden (NW10), Neasden (NW10, NW2), Cricklewood (NW2), Sudbury (HA0), Harrow on the Hill (HA1) are all within the same Harrow policy area as Kenton.

The fee follows the building. On Kenton stock that means party walls, levels, and the Stanmore 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.

That charge is London Borough of Harrow's, taken when the Kenton application is lodged. London planning approval-rate dataset · Harrow planning · house extension drawings in London · house extension drawings in Kensal Green.

The technologist drawing your Kenton scheme is MCIAT chartered — the professional body for technical design and building-regulations competence. Borderline is normal in Kenton; we resolve it with Harrow Council before submission rather than after refusal.

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.

Most Kenton enquiries turn into a fixed quote the same day. This Kenton page was reviewed in August 2026.