Measured Building Surveys · HA7 Stanmore
Harrow protects the Stanmore Hill conservation area and the surrounding green belt and commons; HA7 is a higher-value market of large houses on generous plots.
Harrow, covering Stanmore. It sends more work to committee than any other London borough — only 87.3% of decisions were delegated to officers, against 97.0% across the capital — and it approved 77.8% of the householder applications it decided.
| Measure | Harrow | London |
|---|---|---|
| Decisions made under delegated powers | 87.3% | 97.0% |
| Householder approval rate | 77.8% | 83.0% |
| Householder decisions made | 2,856 | 77,680 |
| Decided inside eight weeks | 91.0% | — |
| Conservation areas | 27 covering 402 ha | 1,141 across London |
| Measured survey, floor plans from | £245 | our fixed fee |
Sources: decision figures from MHCLG District Planning Application Statistics (PS1 and PS2), twelve quarters to March 2026; conservation areas from planning.data.gov.uk, retrieved 1 September 2026; the survey fee is our own published fixed fee. Harrow's return carries a suspected reporting spike on its listed-building works certificates, so no figure from that field is quoted here.
Stanmore HA7 — local contextFor an address outside this district, the borough-wide page sets out the same work: measured building surveys in Harrow.
A measured building survey captures your Stanmore property exactly — every wall, opening, level and boundary — as the accurate base for design and planning drawings. On HA7's older terraced and villa stock around Stanmore, Belmont (Harrow) fringe, Canons Park fringe, Stanmore Hill, walls are rarely square, so a laser-measured survey prevents costly errors before Harrow Council ever sees the application.
Capture with a Leica Disto and a BLK360, delivery in AutoCAD or Revit, all of it under MCIAT charter.
Across Stanmore, Belmont (Harrow) fringe, Canons Park fringe, Stanmore Hill in HA7, the dominant property is large inter-war detached and semi-detached houses around stanmore, with generous plots toward stanmore common and the green belt. 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 Stanmore property, confirm the planning route — Permitted Development, a Lawful Development Certificate, or full planning — and draw a council-ready set tailored to the HA7 streetscape.
Housing stock in HA7: large interwar detached and semi-detached houses around Stanmore, with the plots getting wider as you move towards Stanmore Common and the green belt. Across the borough, 41.6% of 96,860 dwellings date from the 1930s, on VOA council tax stock data current at 31 March 2025.
Within the district: Stanmore itself, the Belmont fringe, the Canons Park fringe, and Stanmore Hill.
Streets we know in HA7: the Stanmore Hill area, the streets around Stanmore Broadway and the larger plots toward Stanmore Common. Each road has its own building line, boundary treatment and precedent that Harrow Council weighs when assessing a measured building survey scheme.
Conservation areas: Stanmore Hill, and Stanmore Common and Old Church. Anything altering an external face inside those boundaries goes the full-application route, heritage justification included.
Getting around HA7: the Jubilee line terminates at Stanmore, with Canons Park the next station down.
Property values: £595,000 was the median HA7 sale price in 2025, over 325 recorded transactions. Contains HM Land Registry data (c) Crown copyright and database right 2026.
Borough character: outer north-west London, suburban in grain, with Harrow on the Hill under heritage control far tighter than anywhere else in the borough. The rest is not as permissive as it looks: Harrow granted 77.8% of householder applications against 83.0% across the 33 boroughs pooled.
A chartered technologist works the Stanmore property with a Leica Disto, setting up the BLK360 where a scan earns its place. Ninety minutes is normal for a two or three bedroom house.
Produced in AutoCAD, or in Revit if the job needs a model, at 1:50 or 1:100 and accurate to plus or minus 3mm point to point. Every room, every opening, the fittings and the visible services all carry annotation.
Four elevations, plus the sections cut through them. Harrow wants elevations to determine an application; sections are what an engineer designs from and what a party wall award will refer back to.
What the BLK360 leaves behind is a full 3D point cloud. On an older Stanmore house, on anything listed, or where the geometry refuses to resolve into right angles, that is what stops assumptions being drawn as fact.
You are sent DWG and RVT files, a PDF set and an IFC model. No architect, engineer or contractor downstream needs anything converted.
An accuracy report goes out with the drawing, written to RICS expectations: accurate to plus or minus 3mm point to point, and inside 5mm across the whole building. It is what a validation officer will accept, what an insurer will accept, and what the party wall surveyor next door will work from.
Single planning or building-regs submission.
Planning + building regs + structural.
Listed, conservation or complex sites.
HA7 is a higher-value market of large interwar detached and semi-detached houses on generous plots, which is exactly the stock that takes substantial rear, side and wrap-around extensions, two-storey additions and loft conversions. The width of the plots is what creates the scope. Outside the conservation area and away from the green belt a good deal of it never needs an application, and a Lawful Development Certificate is what puts that beyond argument later.
Approaching Stanmore Common and the green belt, enlarging the footprint runs into hard limits, and the Stanmore Hill conservation area holds the historic core. We test both before a line is drawn. On the wide plots within the built-up area, considerably more is achievable than owners expect.
Generally yes, on a detached or semi-detached house and outside the conservation area boundary. The usual form is a hip-to-gable taken with a dormer at the back, held inside the 50 cubic metre allowance, then documented by a Lawful Development Certificate. HA7 roofs are large and the head height is usually there. The same drawings are taken through Building Control.
Appeal is where Harrow's picture changes. Of 1,441 appeals decided in the borough, 502 were allowed and 939 dismissed — 34.8% overturned. That figure is not, and must not be read as, an approval rate. Only refused applicants appeal, only some of those are willing to spend on it, and schemes with a real argument are heavily over-represented in that group. But a third of them succeeding says the first decision here is contestable more often than most owners assume, and it is worth knowing before accepting a refusal at face value. Source: Planning Inspectorate appeal decisions
Set the drawing fee against a district median of £595,000 and it is a small line item. Harrow Council's statutory charge is separate and payable on top. The householder application fee in England is £548, and a full application is £610. Our drawing price is fixed before we begin, and the site survey is free at any HA7 address.
Three to four weeks separates instruction from submission on an HA7 job, whether the address is in Stanmore, on the Belmont or Canons Park fringes, or up on Stanmore Hill. The measured survey takes the first of those weeks; the drawings and your revisions take the rest. Validation follows, and then Harrow's statutory eight weeks on a householder case. Every officer query in that window is ours to deal with.
HA7 is Harrow for practical purposes: 99.1% of the district's 2025 sales were inside the borough, with a sliver falling into Barnet at the eastern edge, so Harrow Council decides all but a handful of applications. Harrow operates no Article 4 Direction across the borough that would take ordinary householder rights away from a family house, though a condition on an earlier consent can do exactly that at one address. Stanmore Hill and Stanmore Common and Old Church are the conservation areas here, and altering an external face inside either boundary means submitting a full application supported by heritage evidence. We confirm all of it against your address before quoting.
Nearly always. Form an opening, install a beam, build a loft floor or disturb a foundation and Building Regulations approval is required: Part A for structural adequacy, Part B for escape, Part L for insulation. That submission is made either at Harrow's own building control department or through an approved inspector. HA7 is largely semi-detached, so party wall notices are normally served and answered before any steel is fitted. Our Complete package carries the regulations submission and the notices together.
On value, yes — 325 HA7 properties sold during 2025 and the middle one went at £595,000, on Land Registry price-paid returns. Whether a particular extension repays its cost is not something any dataset here settles. What is certain is the downside of the other route: an unapproved scheme, or one Building Control declines to sign off, is the thing that derails an HA7 sale. Source: HM Land Registry Price Paid Data
Local policy varies more between adjoining boroughs than most owners expect. Full service detail for HA1, HA2, HA3 and HA5.
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
Below: the part of HA7 we survey, its dominant housing type, and the authority that will validate an application built on the survey. The fees quoted are the 2026 England statutory scale, which is council money and nothing to do with survey pricing.
| Postcode | Area | Dominant stock | What it means for a measured building survey |
|---|---|---|---|
| HA7 | Stanmore | 1930s semi-detached, Edwardian villas | HA7 is Stanmore. With 99.1% of the district's sales falling inside Harrow, the borough is the determining authority in all but a handful of cases, working from the designations on its own policies map. |
| HA1 | Harrow / Harrow on the Hill | Georgian and Victorian houses, listed buildings | Adjoining district to HA7. A survey is a record rather than an application, so nothing about it changes at the Harrow boundary. |
| HA2 | North Harrow / South Harrow | 1930s semi-detached | Adjoining district to HA7. A survey is a record rather than an application, so nothing about it changes at the Harrow boundary. |
| HA3 | Harrow Weald / Kenton / Wealdstone | 1930s semi-detached | Adjoining district to HA7. A survey is a record rather than an application, so nothing about it changes at the Harrow boundary. |
A short walk in HA7 takes you across changes of roof pitch, of wall build-up and of garden depth, and each of them shifts what the survey will let you propose.
HA7 (Stanmore) conservation designations: there are 29 across Harrow Council, Harrow on the Hill, Pinner Village, Stanmore among them. Designation costs a HA7 (Stanmore) 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. Pinner Village is the HA7 (Stanmore) designation that most often changes a measured building survey design.
HA7 (Stanmore) permitted development status: there is no borough-wide direction from Harrow Council, so a measured building survey at a HA7 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a HA7 (Stanmore) sale to argue it later.
HA7 (Stanmore) housing stock: 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. Read that before choosing a measured building survey route in HA7 (Stanmore) — construction, not postcode, sets what is achievable. Harrow Council charges £548 for a householder application and has 8 weeks to determine it.
Sources for this HA7 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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