14a, Ashburnham Avenue, Harrow, HA1 2JQ
About 14a
14a is a four-bedroom semi-detached house in Harrow (HA1 2JQ). It has a recorded floor area of 168 m² (around 1808 sq ft), construction records dating it to 1930-1949 and council tax band E. Tenure is freehold. The latest certificate (October 2023) shows a C (score 80), near the top of the C band. When first surveyed in November 2015 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Very Good and window efficiency went from Good to Very Good. The recommended improvements would push it to B (score 87). Records show the property has been extended at some point in its history.
2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. At 168 m² it's 25.8% larger than the typical home in the postcode (134 m² median across 12 EPCs). Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). On the market in March 2016 and unlisted since — roughly 10 years. Across 2007–2016, sale prices on this property compounded at 7.9% per year. Today's modelled estimate of £749,000 is 20.8% above the 2016 sale price.
Know exactly what you're buying at 14a
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
- Bedrooms4
- Bathrooms2
- EnsuiteYes
Outside
- Private gardenYes
- ParkingYes
Building
- TenureFreehold
- Previously extendedYes
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
High performance glazing installed
Cavity wall insulation installed
Loft insulation upgraded to recommended levels
Floor insulation added or improved
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Aug 2020AmendmentIn report
Non material amendment to planning permission P/2116/19 dated 29/07/2019 to allow partial enclosure to side walkway
- Documents
- 11 docs on file
- Reference
- P/2290/20
- Jul 2019DemolitionFullIn report
Extension: Part single, part two storey · Side and rear of property
Single storey and first floor front extension two storey side to rear extension incorporating undercroft; single storey rear extension; external alterations including creation of sunken patio area (demolition of conservatory) (amended development description)
Extension- Documents
- 25 docs on file
- Reference
- P/2116/19
We flagged 2 things worth checking at 14a
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
- Larger development activity nearby
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Sales history & valuation
14a valuation sits well clear of the typical sold price in this postcode.
£749,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.9% per year over 8 years.
£620,000
Growth on file: 7.9% per year over 8 years.
Sales timeline
4 March 2016Most recent
£620,000
+90.8%over 8 years10 September 2007
£325,000
Median price across the last 5 sales in HA1 2JQ: £670,000 (2024–2019).
Nearby sales in HA1 2JQ
Everything we know about 14a, 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
- Larger development activity nearby

Versus other Ashburnham Avenue homes
On epc rating, 14a stands well clear of the street.
Price per m²
£3,690
Street avg £4,680
Floor Area
168 m²
Street avg 140 m²
Habitable Rooms
8 rooms
Street avg 6 rooms
CO₂ Emissions
3.1 t/year
Street avg 7.5 t/year
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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
0.1 km
Gayton Road — bus stop.
Closest school
0.1 km
Harrow High 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
56.0dB

Night-time· 23:00 – 07:00
46.3dB