Flat 3, 17 Roxborough Park, Harrow, HA1 3BA
About Flat 3
Flat 3 is a one-bedroom semi-detached house in Harrow (HA1 3BA). It has a recorded floor area of 43 m² (around 463 sq ft), construction records dating it to before 1900 and council tax band C. At 43 m² this is the smallest unit on EPC record across the building (43–81 m²). The building's EPC ratings span D to C, with this unit at the top. The latest certificate (October 2020) shows a C (score 70). When first surveyed in September 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while window efficiency dropped from Good to Average.
Most recent transfer: May 2023 at £335,000. Across the public record there are 4 sales, relatively high churn for a single property. Across 2003–2023, sale prices on this property compounded at 3.9% per year. On a £-per-square-foot basis, the last sale (£724/sq ft) was about 120.6% above the typical sold price in the postcode. At 43 m² it's 23.2% smaller than the typical home in the postcode (56 m² median across 40 EPCs). One historical planning record sits against the property in 2008.
Know exactly what you're buying at Flat 3
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms1
- Bathrooms1
Outside
- Communal gardenYes
- ParkingAllocated
Building
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Wall insulation improved
More low energy lighting installed
Planning history
- Feb 2008ConditionsIn report
Approval condition 2 (details of window mouldings) attached to permission p/2546/07/dfu dated 31.10.07 For replacement windows to first floor front and southern elerations.
- Documents
- 12 docs on file
- Reference
- P/4179/07
We flagged 1 thing worth checking at Flat 3
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Sale price has at least doubled since 2003.
£325,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.9% per year over 20 years.
£335,000
Growth on file: 3.9% per year over 20 years.
Sales timeline
14 May 2023Most recent
£335,000
+70.7%over 13 years12 February 2010
£196,250
+1.9%over 2 years19 March 2007
£192,500
+24.2%over 3 years30 March 2003
£155,000
Median price across the last 5 sales in HA1 3BA: £305,000 (2025–2023).
Nearby sales in HA1 3BA
Hale Lodge, Flat 12, 51 Roxborough Park, Harrow, HA1 3BA
Sold Mar 2025
£315,000Flat 1, 17 Roxborough Park, Harrow, HA1 3BA
Sold Dec 2024
£305,00049b, Roxborough Park, Harrow, HA1 3BA
Sold Oct 2024
£265,50049c, Roxborough Park, Harrow, HA1 3BA
Sold Nov 2023
£279,00019a, Roxborough Park, Harrow, HA1 3BA
Sold Oct 2023
£337,000
Everything we know about Flat 3, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Roxborough Park homes
Price per m² for Flat 3 runs comfortably ahead of the street norm.
Price per m²
£7,791
Street avg £4,282
Floor Area
43 m²
Street avg 57 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
1.8 t/year
Street avg 2.2 t/year
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51a, Flat 3, Roxborough Park
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Ambassador House, Flat 11, 2 Cavendish Avenue
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
28/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Harrow-on-the-Hill Station — bus stop.
Closest school
0.3 km
St Anselm's Catholic Primary School. 38 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
55.4dB

Night-time· 23:00 – 07:00
45.4dB