23b, Hawthorn Drive, Harrow, HA2 7NU
About 23b
23b is a two-bedroom semi-detached house in Harrow (HA2 7NU). It has a recorded floor area of 52 m² (around 560 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (May 2015) shows an E (score 41), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 75), a 2-band jump. The latest certificate is from May 2015, so improvements made since then won't be reflected. Our model identifies extension potential, subject to local planning policy.
At 52 m² it sits well below the postcode median (100 m² across 18 EPCs), making it one of the more compact homes locally. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include a loft conversion and an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £488,000 is 19.6% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£729/sq ft) was about 95.4% above the typical sold price in the postcode. 10 years since the last transfer (January 2016).
Know exactly what you're buying at 23b
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
- Bedrooms2
Outside
- Private gardenSouth-facing
- ParkingOff street
Building
- Extension potentialPossible
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 27 May 2025
EPC Rating
Planning history
Planning history includes both a loft conversion and an extension — the classic family-home expansion.
- Mar 2018Loft ConversionAmendmentIn report
Certificate of lawful development (proposed): Alterations to roof to form end gable and rear dormer; installation of two rooflights in front roofslope and new window in side
- Documents
- 16 docs on file
- Reference
- P/0450/18
- May 2016ExtensionFullIn report
Extension: Single storey · Rear of property
Single storey rear extension; external alterations
- Documents
- 16 docs on file
- Reference
- P/1202/16
We flagged 1 thing worth checking at 23b
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
23b valuation sits well clear of the typical sold price in this postcode.
£488,000
Modelled from EPC, postcode comparables.
£408,000
Recorded with HM Land Registry.
Sales timeline
28 January 2016Most recent
£408,000
Median price across the last 5 sales in HA2 7NU: £615,000 (2025–2021).
Everything we know about 23b, 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 Hawthorn Drive homes
On price per m², 23b stands well clear of the street.
Price per m²
£7,846
Street avg £3,744
Floor Area
52 m²
Street avg 108 m²
Habitable Rooms
3 rooms
Street avg 5 rooms
CO₂ Emissions
4.4 t/year
Street avg 5.8 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Church Drive — bus stop.
Closest school
0.1 km
Longfield Primary School. 40 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
52.2dB

Night-time· 23:00 – 07:00
41.2dB