4a, Willow Avenue, Denham, Uxbridge, UB9 4AF
About 4a
4a is a four-bedroom semi-detached house in Denham, Uxbridge, Uxbridge (UB9 4AF). It has a recorded floor area of 121 m² (around 1302 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (March 2025) shows a C (score 76), near the top of the C band. When first surveyed in October 2010 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good and lighting went from Poor to Very Good. The recommended improvements would push it to B (score 85).
It changed hands recently, sold October 2025 for £705,000. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs). Across 1999–2025, sale prices on this property compounded at 6.7% per year. On a £-per-square-foot basis, the last sale (£541/sq ft) was about 113.1% above the typical sold price in the postcode. 3 planning records sit against the property, 0 approved, 0 refused.
What this property has
Inside
- Bedrooms4
- Bathrooms2
- Open-plan layoutYes
- EnsuiteYes
Outside
- GarageYes
Building
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Roof insulation improved
More low energy lighting installed
Planning history
- Apr 2019Loft ConversionFullIn report
2 no. dormers to front roofslope
- Agent
- Stuart Bowen & Co
- Documents
- 4 docs on file
- Reference
- PL/19/0602/FA
- Dec 2016Loft ConversionOutlineIn report
Application for a Certificate of Lawfulness for proposed: Loft conversion incorporating roof extension, rear dormer and front rooflight.
- Documents
- 7 docs on file
- Reference
- 16/02007/CLOPED
What's in 4a, Willow Avenue, Denham, Uxbridge, UB9 4AF's planning history?
1 more on this property, plus refusals, disputes and full decisions nearby, in the report.
Sales history & valuation
Price for 4a has grown more than fourfold since the 1999 starting point.
£717,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.7% per year over 27 years.
£705,000
Growth on file: 6.7% per year over 27 years.
Sales timeline
14 October 2025Most recent
£705,000
+123.8%over 12 years18 July 2013
£315,000
+152.0%over 14 years26 March 1999
£125,000
Median price across the last 5 sales in UB9 4AF: £490,000 (2025–2015).
Nearby sales in UB9 4AF
1a, Willow Avenue, Denham, Uxbridge, UB9 4AF
Sold Mar 2025
£500,0003a, Willow Avenue, Denham, Uxbridge, UB9 4AF
Sold Apr 2021
£480,0002a, Willow Avenue, Denham, Uxbridge, UB9 4AF
Sold Mar 2020
£490,000Mill Stream Cottage, Willow Avenue, Denham, Uxbridge, UB9 4AF
Sold Nov 2016
£725,000Old Mill House, Willow Avenue, Denham, Uxbridge, UB9 4AF
Sold Apr 2015
£499,999
Versus other Willow Avenue homes
Years Held for 4a lags the street by a wide margin.
Price per m²
£5,826
Street avg £4,178
Floor Area
121 m²
Street avg 129 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.0 t/year
Street avg 4.9 t/year
Similar properties nearby
1 Orchard Close, Denham
UB9 4BB
1 Denham Close, Denham
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1 Willow Avenue, Denham
UB9 4AG
1 Hawthorn Drive, Denham
UB9 4AH
1 Courtfield Gardens, Denham
UB9 4EF
10 Ash Green, Denham
UB9 4EJ
1 Oxford Gardens, Denham
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1 Willow Crescent East, Denham
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
7/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Oakside — bus stop.
Closest school
0.9 km
Hermitage Primary School. 17 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
54.2dB

Night-time· 23:00 – 07:00
47.4dB







