Measured Building Surveys · HA2 North Harrow
Harrow applies standard suburban householder control across HA2, classic 1930s metro-land of bay-fronted semis with few conservation constraints.
Project sitting outside this district? The borough-wide page covers everywhere else: measured building surveys in Harrow.
A measured building survey captures your North Harrow property exactly — every wall, opening, level and boundary — as the accurate base for design and planning drawings. On HA2's older terraced and villa stock around North Harrow, South Harrow, Rayners Lane, West Harrow fringe, walls are rarely square, so a laser-measured survey prevents costly errors before Harrow Council ever sees the application.
Disto laser measurement, BLK360 point clouds, AutoCAD and Revit deliverables, MCIAT chartered throughout.
Across North Harrow, South Harrow, Rayners Lane, West Harrow fringe in HA2, the dominant property is inter-war bay-fronted semis and terraces around north harrow and south harrow — classic metro-land. That stock shapes what measured building survey looks like here: the right approach for a period terrace differs from a mansion-block flat or a new-build, and Harrow Council judges each on design quality and neighbour impact. We survey the specific North Harrow property, confirm the planning route — Permitted Development, a Lawful Development Certificate, or full planning — and draw a council-ready set tailored to the HA2 streetscape.
Housing stock in HA2: bay-fronted inter-war semis and terraces through North Harrow and South Harrow. Borough-wide, 41.6% of the 96,860 dwellings on the VOA's council tax register at 31 March 2025 were built during the 1930s — metro-land, almost literally.
Within the district: North Harrow, South Harrow and Rayners Lane, plus the West Harrow fringe along the district's eastern edge.
Streets we know in HA2: the streets around Rayners Lane, the North Harrow estate roads and the inter-war terraces toward South Harrow. Each road has its own building line, boundary treatment and precedent that Harrow Council weighs when assessing a measured building survey scheme.
Getting around HA2: North Harrow, South Harrow and Rayners Lane stations, on the Metropolitan and Piccadilly lines.
Property values: the HA2 median sale price in 2025 was £540,000, on 333 transactions recorded by the Land Registry — the baseline against which an extension or loft adds value.
Borough character: suburban outer north-west London, laid out largely between the wars. Harrow on the Hill is the exception to everything, with heritage controls tighter than anywhere else in the borough.
The survey is done in person. A chartered technologist turns up at the North Harrow house with a laser measure and a BLK360 on a tripod, and two or three bedrooms take roughly 90 minutes to capture in full.
Drawings come out of AutoCAD or Revit at 1:50 or 1:100, held to 3mm. Every room, opening, fitting and service run is annotated on the sheet.
Every elevation gets drawn, with cross-sections cut through the house — the basis for a North Harrow planning application, a party wall award, and the engineer's calculations alike.
A BLK360 pass returns the entire building as a 3D point cloud. That pays off on older North Harrow stock, on listed fabric, and anywhere the plan refuses to be simple.
Everything exports as DWG, RVT, PDF and IFC, so nothing has to be redrawn by your architect, your contractor or the structural engineer.
An accuracy statement to RICS standards accompanies the survey — 3mm between measured points, 5mm against the datum. A council will take that certificate, so will an insurer, and a party wall surveyor needs it before drafting an award.
Single planning or building-regs submission.
Planning + building regs + structural.
Listed, conservation or complex sites.
Because HA2 is the purest metro-land in the borough. On the VOA's council tax stock file as at 31 March 2025, 41.6% of Harrow's 96,860 dwellings date from the 1930s, and the bay-fronted semis around North Harrow, South Harrow and Rayners Lane are that decade's signature: generous side plots, shallow hipped roofs, repeated street after street. The uniformity is what makes the work predictable — side and rear extensions, hip-to-gable lofts — and with the borough only 75.1% built up over its 5,046.7 hectares, plot depth is rarely the binding constraint. Few conservation designations reach this district, so much of the work runs on permitted development, recorded with a Lawful Development Certificate.
Usually yes. On a metro-land semi, a hip-to-gable with a dormer behind it fits inside the 50 cubic metre allowance, and a Lawful Development Certificate then records the fact. The 1930s roof pitches tend to leave usable head height once the new floor is in. We draw for Building Control as well, which the floor and the staircase both require.
Often, yes, on the standard semi plots — a wrap-around at ground level, or a two-storey side addition — provided Harrow's neighbour-amenity policy and the 45-degree test are both satisfied. We design inside those limits and issue the planning and Building Regulations drawings together.
HA2 houses sold at a £540,000 median last year, and the Metropolitan and Piccadilly lines put central London within a straightforward commute. Against that, the family space a rear extension or loft adds is worth appreciably more than the build and the drawings together.
Set our fee against the district median of £540,000 — Land Registry, 333 HA2 sales logged in 2025 — and it is a small line beside what the work adds to an inter-war bay-fronted semi. Harrow's statutory charge is separate and fixed nationally: £548 to lodge a householder application, £610 for a full one. One fixed price covers the drawings, and surveying the property costs nothing anywhere in HA2.
Across North Harrow, South Harrow, Rayners Lane and the West Harrow fringe, instruction to submission takes three to four weeks. Survey first, inside the opening week; drawings and revisions over the two that follow; then validation and Harrow's statutory determination, eight weeks on a householder application. Every officer query comes to us, right through to the decision.
HA2 lies wholly inside Harrow — every one of the district's 2025 sales was at a Harrow address — so the council decides every application from here, and nobody has to work out which authority owns the street. No Article 4 direction bites on householder work in the borough. The planning route for your specific address gets confirmed before we quote.
Almost always. Structural work downstream of the survey — openings cut into walls, beams, a new loft floor, foundations — requires Building Regulations approval: Part A for structure, Part B for escape, Part L for insulation, filed with Harrow Building Control or an approved inspector. Semis and terraces dominate HA2, so the neighbours normally have to receive a Party Wall notice before the steel arrives. Coordinating the two is part of the Complete package.
In value terms, yes. HA2 property sold at a median of £540,000 through 2025, across 333 transactions the Land Registry recorded in the district, and the floor area a good extension or loft adds usually outruns what it costs to build. The costly outcome is the one nobody approved. Drawings the council can validate, and a Building Control certificate at the end, are what keep that from happening.
Neighbouring authorities set their own policies, and the boundary rarely matches the postcode. Full service listings for HA1, HA3, HA5 and HA7.
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
The parts of HA2 we draw in, what kind of house predominates in each, and which authority validates survey-led work there. Fee figures are England's statutory 2026 rates, not what a survey costs.
| Postcode | Area | Dominant stock | What it means for a measured building survey |
|---|---|---|---|
| HA2 | North Harrow / South Harrow | 1930s semi-detached | HA2 is North Harrow and South Harrow and nothing else. Harrow Council handles the survey workping. |
| HA2 | North Harrow | 1930s semi-detached | North Harrow lies wholly inside HA2, and Harrow Council determines the survey-led proposals that come out of it. |
| HA2 | South Harrow | 1930s semi-detached | South Harrow is likewise HA2 throughout, with Harrow Council acting as determining authority for work there. |
| HA1 | Harrow / Harrow on the Hill | Georgian and Victorian houses, listed buildings | Adjoining district to HA2. Surveying needs no consent here either — Harrow has no say in it, and the survey is the same record whichever side of the line the property sits. |
| HA3 | Harrow Weald / Kenton / Wealdstone | 1930s semi-detached | Adjoining district to HA2. Surveying needs no consent here either — Harrow has no say in it, and the survey is the same record whichever side of the line the property sits. |
| HA7 | Stanmore | 1930s semi-detached, Edwardian villas | Adjoining district to HA2. Surveying needs no consent here either — Harrow has no say in it, and the survey is the same record whichever side of the line the property sits. |
Pitch, wall construction and plot depth are different two streets over in HA2, and each difference changes what a measured survey needs to record at that address.
HA2 (North Harrow / South Harrow) conservation designations: there are 29 across Harrow Council, Pinner Village, Stanmore, Harrow Weald among them. Designation costs a HA2 (North Harrow / South Harrow) owner the permitted-development route: a measured building survey then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Harrow on the Hill is the HA2 (North Harrow / South Harrow) designation that most often changes a measured building survey design.
HA2 (North Harrow / South Harrow) permitted development status: there is no borough-wide direction from Harrow Council, so a measured building survey at a HA2 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a HA2 (North Harrow / South Harrow) sale to argue it later.
What HA2 (North Harrow / South Harrow) is built from: 1930s semi-detached dominates; Edwardian villas in Harrow on the Hill and Pinner; Metropolitan Green Belt in Stanmore and Harrow Weald; post-war flats around Harrow Central. Outer north-west London suburban; Harrow on the Hill has exceptionally strict heritage controls; rest of borough permissive. That mix decides the measured building survey route in HA2 (North Harrow / South Harrow) more than the postcode does, and it is what a Harrow Council case officer reads first. A householder application costs £548 paid to Harrow Council direct, with 8 weeks to a decision once validated.
Sources for this HA2 measured building survey 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.
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