138 Walton Avenue, Harrow, HA2 8QZ
About 138 Walton Avenue
138 Walton Avenue is a semi-detached house in Harrow (HA2 8QZ). It has a recorded floor area of 64 m² (around 689 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (June 2022) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in April 2012 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good, window efficiency went from Average to Good and hot-water efficiency went from Average to Good. The recommended improvements would lift it to B (score 85), a 2-band jump.
One planning record on file: an extension approved in 2024. Past consents include an extension, a porch and partial demolition, meaningful when judging how the property has evolved. Across 2014–2022, sale prices on this property compounded at 7.5% per year. On a £-per-square-foot basis, the last sale (£817/sq ft) was about 327.9% above the typical sold price in the postcode. Sold September 2022 for £562,500. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 138 Walton Avenue
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
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Window efficiency improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Dec 2024PorchFullIn report
Extension: Rear of property
Front porch, Single and two story rear extension, Raised patio to rear, Outbuilding at rear for use as Office/Gym (Demolition of rear extension, raided decking and detached garage)
ExtensionDemolition- Reference
- PL/3371/24
We flagged 2 things worth checking at 138 Walton Avenue
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
Latest sale on 138 Walton Avenue was the highest on Land Registry record across the postcode.
£581,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.5% per year over 9 years.
£562,500
Growth on file: 7.5% per year over 9 years.
Sales timeline
29 September 2022Most recent
£562,500
+44.2%over 7 years30 July 2015
£390,000
+30.0%over 1 year31 January 2014
£300,000
Median price across the last 5 sales in HA2 8QZ: £220,000 (2019–2000).
Everything we know about 138 Walton Avenue, 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 Walton Avenue homes
138 Walton Avenue outperforms the street on price per m² by a wide margin.
Price per m²
£8,789
Street avg £2,828
Floor Area
64 m²
Street avg 88 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.1 t/year
Street avg 4.1 t/year
Similar properties nearby
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Somervell Road — bus stop.
Closest school
0.2 km
Earlsmead Primary School. 38 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
50.6dB

Night-time· 23:00 – 07:00
39.6dB