7a, Blawith Road, Harrow, HA1 1TL
About 7a
7a is a semi-detached house in Harrow (HA1 1TL). It has a recorded floor area of 39 m² (around 420 sq ft), construction records dating it to 1930-1949 and council tax band B. At 39 m² this is the smallest unit on EPC record across the building (39–180 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (December 2022) shows a C (score 71). The rating has held steady at C across 2 certificates since October 2008. Between certificates, lighting went from Good to Very Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.
Held since September 2007 — that's 19 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. 3 planning records sit against the property, 2 approved, 0 refused. Past consents include a loft conversion, meaningful when judging how the property has evolved. At 39 m² it's 25% smaller than the typical home in the postcode (52 m² median across 23 EPCs). Its energy rating outperforms most of the postcode (better than 87% of similar EPCs). Today's modelled estimate of £226,000 is 48.2% above the 2007 sale price. On a £-per-square-foot basis, the last sale (£363/sq ft) was about 24% above the typical sold price in the postcode.
Know exactly what you're buying at 7a
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
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Planning history
- Sept 2022Loft ConversionFullIn report
Alterations and extension to roof to form end gable; rear dormer; three rooflights in front roofslope to create additional habitable roofspace for top floor flat
- Documents
- 10 docs on file
- Reference
- P/1896/22
- Nov 2016Loft ConversionFullIn report
Alterations to roof to form end gable rear dormer and three rooflights in front roofslope
- Documents
- 11 docs on file
- Reference
- P/3827/16
We flagged 1 thing worth checking at 7a
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
The latest sale landed at the peak of the pre-credit-crunch market — a high-water reference point.
£226,000
Modelled from EPC, postcode comparables.
£152,500
Recorded with HM Land Registry.
Sales timeline
19 September 2007Most recent
£152,500
Median price across the last 5 sales in HA1 1TL: £355,000 (2022–2017).
Nearby sales in HA1 1TL
Everything we know about 7a, 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 Blawith Road homes
7a is notably below the street on floor area.
Price per m²
£3,910
Street avg £3,214
Floor Area
39 m²
Street avg 55 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
1.6 t/year
Street avg 2.9 t/year
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
0.2 km
Harrow Civic Centre / Harrow Mosque — bus stop.
Closest school
0.4 km
Saint Jerome Church of England Bilingual 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
52.9dB

Night-time· 23:00 – 07:00
41.4dB