Loft Conversion Drawings in Wealdstone | From £1,225

No Article 4 Direction covers Harrow, which keeps the Wealdstone permitted-development route open on unlisted houses. Wealdstone is 1930s semi-detached, post-war — a loft conversion drawings submission has to answer that context rather than a generic London template. Harrow carries 29 conservation areas; if the HA3 address falls in Pinner Village or Stanmore, expect the permitted-development route to close and a full Harrow Council application to be the faster answer. Whether a Wealdstone plot sits inside the boundary changes the whole route.

That check — Article 4 directions against the Wealdstone property — happens on day one. What the Wealdstone building allows is established first; what Harrow Council allows, second. The borough policy layer over every HA3 address is set out on Harrow planning. The Wealdstone survey then carries into building regulations drawings in Wealdstone if the project runs on to construction.

Most Wealdstone delay happens before the clock starts: London Borough of Harrow takes one to two weeks to validate, and an incomplete pack goes to the back of the queue. The first visit to Wealdstone is a measured survey — every room, every opening, every level change recorded on site.

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.

We monitor the HA3 case and respond to officer queries during the period. Every Wealdstone submission leaves here as a PDF set at the scales Harrow Council requires.

Most Wealdstone refusals trace back to overlooking, not to size. The Wealdstone survey includes the boundary line and neighbouring window positions.

Budget notice time on any Wealdstone job touching a shared wall. Once consent is granted, house extension drawings follows for the HA3 property.

Wealdstone is characterised by 1930s semi-detached, post-war flats, concentrated across HA3 in the Harrow Weald / Kenton / Wealdstone area. Across HA3 the 1930s semi-detached repeats often enough to be predictable, once it has been measured properly. Applied to HA3 property: the 1930s hipped roof here needs a hip-to-gable before a rear dormer works, which pushes the volume calculation toward the 50 m³ permitted-development ceiling. On Harrow stock it changes the party wall position. Massing on a Wealdstone scheme is argued against the Wealdstone High Street street rhythm.

Harrow Council assesses Wealdstone basements on standard grounds. Survey data from the Wealdstone property flows straight into architectural drawings for HA3 properties or planning permission without a second site visit.

What the Wealdstone drawing pack contains

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

• existing roof plan and section for the Wealdstone property
• proposed dormer elevations
• volume calculation sheet
• staircase and head-height sections
• structural steel layout

Local landmarks that shape a Wealdstone application

• Harrow Skate Park — gardens deep enough for the 8 weeks householder route on a Harrow Skate Park plot.
• Canons Park — shared flank walls, so Canons Park party structure notices go out before work starts.
• Wealdstone High Street — schemes visible from it get closer scrutiny in Harrow.
• Sacred Heart Language College — nearby 1930s semi-detached takes its scale from this frontage.
• Salvatorian College — the surrounding 1930s semi-detached takes its scale from it.
• Whitefriars School — height and massing nearby are argued against this frontage.

Getting to a Wealdstone survey

Surveyors travel to HA3 addresses from the studio; the nearest stations are Harrow & Wealdstone station, Her Majesty's Stationery Office. Appointments are booked in Wealdstone on weekdays and Saturdays, and the measured survey of a standard 1930s semi-detached takes two to three hours.

Where Wealdstone sits

on Ordnance Survey grid reference TQ155895. We draw the Wealdstone location and block plans from that reference, which is what Harrow Council validates against. Source.

Practical detail for a Wealdstone submission: Harrow & Wealdstone station and Her Majesty's Stationery Office cover the HA3 area; addresses are written to HARROW; dialling code 020. Site plans are drawn to the address as Harrow Council holds it.

Wealdstone postcode coverage

Coverage runs across HA3 (Harrow Weald / Kenton / Wealdstone), shared with Harrow Weald, Kenton — and Harrow Council validates against the address, so the district line matters more than the street name.

Streets and stations in Wealdstone

Harrow Skate Park and Canons Park are typical of the Wealdstone streets we draw. most Wealdstone sites are within walking distance of Harrow & Wealdstone station or Her Majesty's Stationery Office.

Areas we cover around Wealdstone

Neighbouring coverage runs to Hayes (UB3, UB4), West Drayton (UB7), Ickenham (UB10), Harefield (UB9), Yiewsley (UB7), Eastcote (HA5); the Harrow policy is shared but the stock and the designations are not.

A Wealdstone quote moves on what the building is, not on how long we spend: the 1930s semi-detached, the party wall position, the Pinner Village 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.

Wealdstone applicants pay the statutory fee direct to London Borough of Harrow. London planning approval-rate dataset · Harrow planning · loft conversion drawings in London · loft conversion drawings in Hayes.

An MCIAT chartered technologist owns the Wealdstone project from survey to decision. We would rather spend on Harrow Council advice than lose a Wealdstone decision and resubmit.

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.

Give us the HA3 postcode and we will tell you which route applies. This Wealdstone page was reviewed in August 2026.