3a, Blawith Road, Harrow, HA1 1TL
About 3a
3a is a semi-detached house in Harrow (HA1 1TL). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1900-1929 and council tax band B. At 52 m² this is the 10th smallest of 24 units on EPC record in the building, where floor areas span 39–180 m². The building's EPC ratings span E to C across 24 units on file. The latest certificate (March 2009) shows a D (score 66), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 73). The latest certificate is from March 2009, so improvements made since then won't be reflected.
It hasn't traded since January 2002, a hold of 24 years that's notably long for the area. Today's modelled estimate of £239,000 sits 298.3% above the 2002 sale of £60,000. On a £-per-square-foot basis, the last sale (£107/sq ft) was about 65.7% below the postcode norm. One planning record on file: a loft conversion approved in 2002. Past consents include a loft conversion, meaningful when judging how the property has evolved.
Know exactly what you're buying at 3a
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
3a's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 26 Mar 2019
EPC Rating
Planning history
- Jun 2002
We flagged 1 thing worth checking at 3a
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
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Sales history & valuation
3a's estimated value is more than triple its earliest registered sale price (2002).
£239,000
Modelled from EPC, postcode comparables.
£60,000
Recorded with HM Land Registry.
Sales timeline
29 January 2002Most recent
£60,000
Median price across the last 5 sales in HA1 1TL: £355,000 (2022–2017).
Nearby sales in HA1 1TL
Everything we know about 3a, 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
On price per m², 3a runs well behind the street norm.
Price per m²
£1,154
Street avg £3,426
Floor Area
52 m²
Street avg 55 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
2.8 t/year
Street avg 2.8 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