12a, Greenhill Way, Harrow, HA1 1LE
About 12a
12a is a semi-detached house in Harrow (HA1 1LE). It has a recorded floor area of 24 m² (around 258 sq ft) and construction records dating it to 2024. The latest certificate (June 2024) shows a C (score 80), near the top of the C band. When first surveyed in November 2010 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Very Good, window efficiency went from Poor to Very Good and lighting went from Poor to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. At 24 m² this is the 3rd smallest of 36 units on EPC record in the building, where floor areas span 18–153 m². The building's EPC ratings span D to B across 36 units on file.
Untraded for 24 years, with the last transfer in December 2001. Today's modelled estimate of £245,000 sits 85.6% above the 2001 sale of £132,000. On a £-per-square-foot basis, the last sale (£511/sq ft) was about 60.6% above the typical sold price in the postcode. At 24 m² it sits well below the postcode median (62 m² across 35 EPCs), making it one of the more compact homes locally.
Know exactly what you're buying at 12a
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
Energy performance
12a's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system changed
Windows upgraded, improving insulation
More low energy lighting installed
Heating controls changed
Hot water system upgraded
High performance glazing installed
Cavity wall insulation installed
More low energy lighting installed
Planning history
12a has no planning applications on record.
Notable planning nearby
9applications of note in the surrounding area
We flagged 1 thing worth checking at 12a
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.
- Signs of HMO activity in the area
30-day money-back guarantee
Sales history & valuation
£245,000
Modelled from EPC, postcode comparables.
£132,000
Recorded with HM Land Registry.
Sales timeline
21 December 2001Most recent
£132,000
Median price across the last 5 sales in HA1 1LE: £390,000 (2025–2022).
Nearby sales in HA1 1LE
Phoenix House, Flat 1, 68 Greenhill Way, Harrow, HA1 1LE
Sold Mar 2025
£390,00022 Greenhill Way, Harrow, HA1 1LE
Sold Nov 2024
£550,000Phoenix House, Flat 6, 68 Greenhill Way, Harrow, HA1 1LE
Sold Mar 2023
£333,750Phoenix House, Flat 9, 68 Greenhill Way, Harrow, HA1 1LE
Sold Jul 2022
£340,000Phoenix House, Flat 5, 68 Greenhill Way, Harrow, HA1 1LE
Sold Jul 2022
£500,000
Everything we know about 12a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
Versus other Greenhill Way homes
Floor Area for 12a lags the street by a wide margin.
Price per m²
£5,500
Street avg £4,926
Floor Area
24 m²
Street avg 58 m²
CO₂ Emissions
1.0 t/year
Street avg 2.0 t/year
Years Held
24 years
Street avg 11 years
Similar properties nearby
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
0.0 km
Greenhill Way — bus stop.
Closest school
0.3 km
Norbury School. 39 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
56.5dB
Night-time· 23:00 – 07:00
46.3dB