Measured Building Surveys · HA5 Pinner
Harrow protects the Pinner Village, Eastcote Village and Pinnerwood conservation areas, with their historic cores and timber-framed survivors, alongside metro-land householder control across the rest of HA5.
HA5 spans two councils, and the Eastcote end of it is Hillingdon. If your address falls that side of the line, measured building surveys in Hillingdon covers fees, timings and that authority's current position.
A measured building survey captures your Pinner property exactly — every wall, opening, level and boundary — as the accurate base for design and planning drawings. On HA5's older terraced and villa stock around Pinner, Eastcote, Hatch End fringe, Pinner Green, walls are rarely square, so a laser-measured survey prevents costly errors before Hillingdon Council ever sees the application.
Leica Disto for measurement, BLK360 where scanning helps, output as AutoCAD or Revit files, all of it MCIAT chartered.
Across Pinner, Eastcote, Hatch End fringe, Pinner Green in HA5, the dominant property is inter-war metro-land semis and detached houses around pinner and eastcote, with the historic pinner village core. 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 Hillingdon Council judges each on design quality and neighbour impact. We survey the specific Pinner property, confirm the planning route — Permitted Development, a Lawful Development Certificate, or full planning — and draw a council-ready set tailored to the HA5 streetscape.
Housing stock in HA5: metro-land semis and detached houses through Pinner and Eastcote, wrapped around the older village centre. Take Harrow as a whole and 41.6% of its homes were put up during the 1930s, on VOA council tax records as at 31 March 2025.
Within the district: Pinner, Eastcote, Hatch End fringe, Pinner Green.
Streets we know in HA5: the streets around Pinner High Street and the parish church, the Eastcote village roads and the metro-land estates toward Pinner Green. Each road has its own building line, boundary treatment and precedent that Hillingdon Council weighs when assessing a measured building survey scheme.
Conservation areas: Pinner Village, Eastcote Village and Pinnerwood. Alter anything visible from outside a building in one of those three and you are normally applying in full, with heritage justification attached.
Getting around HA5: Pinner and Eastcote both sit on the Metropolitan line, with Hatch End on the Overground a little to the north.
Property values: HA5 saw 438 registered sales in 2025, the median among them £702,500. Source: HM Land Registry Price Paid Data
Borough character: Harrow is suburban outer London, thinly built by the standards of the capital — 75.1% of its land is built up, against 66.0% across London as a whole — and its planning committee still takes a bigger share of decisions than most, with 87.3% delegated to officers where the 33 boroughs average 97.0%.
A chartered technologist does the survey. The Leica Disto handles the dimensions and the BLK360 picks up everything the tape would miss. A house of two or three bedrooms takes about an hour and a half on site.
Work is drawn in AutoCAD or modelled in Revit, plotted at 1:50 or 1:100, accurate to plus or minus 3mm point to point. Rooms, openings, fittings and services all carry annotation.
Elevations on every face, with sections cut through. Validation officers ask for them, party wall awards rest on them, and engineers cannot design without them.
Where scanning is used, the deliverable includes the whole point cloud. On Pinner's older fabric, on anything listed, and on the odd geometry a 1930s roof can hide, that is the difference between a drawing and a guess.
One job, four formats: DWG, RVT, PDF and IFC. Your architect gets something usable, so does the structural engineer, and so does whoever is pricing the build.
The accuracy report is issued with the drawings: accurate to plus or minus 3mm point to point, with absolute error kept under 5mm from one end of the building to the other. Councils accept that, insurers accept it, and so does a party wall surveyor settling an award.
Single planning or building-regs submission.
Planning + building regs + structural.
Listed, conservation or complex sites.
Yes. Metro-land semis and detached houses take a rear, side or wrap-around extension well, and a loft conversion with them. Inside Pinner Village, Eastcote Village or Pinnerwood conservation areas that means a full application and a Heritage Statement; elsewhere a good deal of it proceeds under permitted development, recorded by certificate. One requirement you will probably escape: a Flood Risk Assessment. Flood Zone 3 covers 2.02% of Harrow's 50.46 square kilometres and Zone 2 covers 3.89%, which is about as little as any London borough carries, so the great majority of HA5 addresses sit outside the mapping that makes an assessment compulsory. Those zones describe the undefended extent and say nothing about what will happen to a particular house; all they determine is whether the assessment has to be prepared. Contains public sector information licensed under the Open Government Licence v3.0
The Pinner Village conservation area takes in the historic High Street, the medieval parish church and the timber-framed buildings that survive around them, so anything visible from the street is examined closely for materials and character. We design to that and lodge the Harrow application with a Heritage Statement behind it.
Outside the village designations, usually. Turning the hip into a gable and adding a dormer at the back stays inside the cubic volume permitted development allows, and a Lawful Development Certificate is how that gets recorded. The 1930s roofs around here tend to give decent height under the ridge, which is the thing that decides feasibility. Inside Pinner Village, Eastcote Village or Pinnerwood, any roof alteration needs a full application. We establish which of those governs your road.
What HA5 offers is Metropolitan line trains straight into the City and the West End, a village core people move here for, and a 2025 median sale price of £702,500. Whether added floor area repays itself at resale is a question the price-paid file cannot answer, and this page does not pretend otherwise. Source: HM Land Registry Price Paid Data
Against a district median of £702,500 across 438 registered sales, what we charge for drawings is a modest share of the outlay. On top of it sits the statutory charge, levied by whichever of the two councils holds your address. The householder application fee in England is £548, and a full application costs £610. Our drawings carry one fixed price, and nothing is charged for attending an HA5 address to measure it. Source: HM Land Registry Price Paid Data
Across Pinner, Eastcote, Pinner Green and the Hatch End fringe, reckon on three to four weeks between instruction and submission: survey first, a fortnight drawing and revising after it, and then validation followed by the eight-week statutory period at whichever council owns the address. Harrow issued 1,931 of its 2,121 non-agreement householder decisions inside those eight weeks, so the deadline generally holds. The file stays with us until a decision comes back.
Pinner itself is in Harrow, and Harrow Council determines applications there. The district does not stop at the borough boundary though: Eastcote lies in Hillingdon, and roughly three in ten HA5 property sales are on that side. Three conservation areas fall within the district — Pinner Village, Eastcote Village and Pinnerwood — and within their boundaries you apply in full, with heritage justification attached. Whether an Article 4 direction reaches your address is checked before we quote, never assumed from the borough.
Almost always. Any structural move at all — an opening cut through, a steel installed, a loft floor built, foundations dug — brings Building Regulations approval with it. Part A governs structure, Part B escape, Part L the insulation. The submission goes to Building Control at whichever council holds the address, or to an approved inspector if you appoint one. HA5 being mostly semi-detached, a notice to the neighbour usually comes first: two months for a party structure notice under section 3, and the adjoining owner has fourteen days to respond. The Complete package handles both together.
Not a question we can answer with a number, and anyone who gives you one is guessing. Nothing held in this practice ties a share of resale value to an extension. What is on record is the market you are building into: 438 sales went through in HA5 during 2025 at a median of £702,500. What is also on record is the downside, which is work carried out without the consent it needed, or work Building Control will not certify. Source: HM Land Registry Price Paid Data
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
Which parts of HA5 we draw in, the stock filling each of them, and the council that validates a survey drawing from that address. Be aware that the right-hand column carries the statutory England planning charge for 2026, which is unrelated to survey pricing.
| Postcode | Area | Dominant stock | What it means for a measured building survey |
|---|---|---|---|
| HA5 | Pinner / Eastcote | Tudor fragments, Edwardian villas, 1930s semi-detached | The HA5 boundary runs through the district: a Pinner address belongs to Harrow, an Eastcote address to Hillingdon, so settle which council is validating before an HA5 submission goes in. |
| HA5 | Eastcote | 1930s semi-detached | Eastcote is the Hillingdon portion of HA5, so proposals at an Eastcote address are determined by Hillingdon Council. |
| HA5 | Pinner | Tudor fragments, Edwardian villas, 1930s semi-detached | Pinner sits in the Harrow half of HA5, but no council decides a survey on either side of that line; the split only starts to matter once an application follows. Older cottages near the High Street have thick, uneven walls, so rooms are measured rather than assumed square. |
| HA4 | Ruislip | 1930s semi-detached, Tudor cottages | Adjoining district to HA5. A survey is a record rather than an application, so nothing about it changes at the Hillingdon boundary. |
| HA6 | Northwood | 1930s detached, Edwardian villas | Adjoining district to HA5. A survey is a record rather than an application, so nothing about it changes at the Hillingdon boundary. |
| UB3 | Hayes / Harlington | 1930s semi-detached, post-war estates | Adjoining district to HA5. A survey is a record rather than an application, so nothing about it changes at the Hillingdon boundary. |
| HA1 | Harrow / Harrow on the Hill | Georgian and Victorian houses, listed buildings | Adjoining district to HA5. 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. |
| HA2 | North Harrow / South Harrow | 1930s semi-detached | Adjoining district to HA5. 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 HA5. 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 HA5. 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. |
HA5 is not uniform. Roof pitch varies, so does wall construction, so does the amount of garden behind the house. All three constrain what a survey can establish at a particular address.
How designation changes a HA5 (Pinner / Eastcote) measured building survey: Hillingdon Council maintains 29 conservation areas, including Ruislip Village, Northwood, Harefield. Inside any of them a HA5 (Pinner / Eastcote) measured building survey cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Northwood sets the tone for HA5 (Pinner / Eastcote) casework.
Article 4 on the Hillingdon side of HA5: permitted development around Eastcote generally survives intact outside the conservation areas and the curtilage of a listed building, but whether a direction reaches a specific street is a question for the council's own mapping rather than a general rule, and we look it up before quoting. Where the work is permitted, a certificate is how an owner puts that on record. The fee for a lawful development certificate is £274.
The building fabric around HA5 (Pinner / Eastcote): 1930s semi-detached dominates; Metropolitan Green Belt covers much of north Hillingdon; Victorian cottages in Uxbridge and Ruislip villages; post-war housing near Heathrow. Largest outer west London borough; significant Green Belt; Heathrow noise contours affect planning decisions in Harmondsworth and Sipson. A measured building survey in HA5 (Pinner / Eastcote) is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Hillingdon Council.
How designation changes a HA5 (Pinner / Eastcote) measured building survey: Harrow Council maintains 29 conservation areas, including Harrow on the Hill, Pinner Village, Stanmore. Inside any of them a HA5 (Pinner / Eastcote) measured building survey cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Harrow Weald sets the tone for HA5 (Pinner / Eastcote) casework.
Article 4 on the Harrow side of HA5: the same applies around Pinner. Away from Pinner Village, Pinnerwood and any listed curtilage, permitted development rights generally remain, though the only reliable answer for a given address comes from Harrow's own mapped directions, which we check at quotation stage. A certificate is what records the position afterwards, and it costs the same either side of the boundary.
The building fabric around HA5 (Pinner / Eastcote): 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. A measured building survey in HA5 (Pinner / Eastcote) is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Harrow Council.
Sources for this HA5 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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