21 Byron Avenue, Watford, WD24 4HT
About 21 Byron Avenue
21 Byron Avenue is a three-bedroom semi-detached house in Watford (WD24 4HT). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (April 2013) shows a D (score 59), a step below the typical UK home. The recommended improvements would lift it to B (score 83), a 2-band jump. The latest certificate is from April 2013, so improvements made since then won't be reflected.
It hasn't traded since October 2005, a hold of 21 years that's notably long for the area. At 87 m² the property is well over the postcode median (65 m² across 12 EPCs), placing it in the larger end of the local stock. Across 2004–2005, sale prices on this property compounded at 13.8% per year. Today's modelled estimate of £468,000 sits 87.2% above the 2005 sale of £249,950. On a £-per-square-foot basis, the last sale (£267/sq ft) was about 19.5% below the postcode norm. One historical planning record sits against the property in 2013.
What this property has
Inside
- Bedrooms3
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This certificate is over 10 years old and is no longer valid.Expired 17 Apr 2023
EPC Rating
Certificate validity
Expired on 17 April 2023
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
Council records include a part-single-part-two-storey rear extension at 21 Byron Avenue.
1 application on record at 21 Byron Avenue, Watford, WD24 4HT
- Nov 2013ExtensionFullOutcome in report
Extension: Part single, part two storey · Rear of property
Erection of part single and part double storey rear extensions.
- Documents
- 18 docs on file
- Reference
- 13/01059/FULH
Unlock 21 Byron Avenue, Watford, WD24 4HT's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 3 notable nearby
- The 18 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
21 Byron Avenue changed hands twice within eighteen months — unusual for the area.
£468,000
Modelled from EPC, postcode comparables and a sale-price growth of 13.8% per year over 1 year.
£249,950
Growth on file: 13.8% per year over 1 year.
Sales timeline
6 October 2005Most recent
£249,950
+16.3%over 1 year5 August 2004
£215,000
Median price across the last 5 sales in WD24 4HT: £447,000 (2025–2014).
Nearby sales in WD24 4HT
Versus other Byron Avenue homes
Price per m² for 21 Byron Avenue lags the street by a wide margin.
Price per m²
£2,873
Street avg £4,783
Floor Area
87 m²
Street avg 69 m²
Habitable Rooms
6 rooms
Street avg 4 rooms
CO₂ Emissions
4.1 t/year
Street avg 3.3 t/year
Similar properties nearby
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
123/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Eastfield Avenue — bus stop.
Closest school
0.3 km
Knutsford Primary Academy. 34 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
52.5dB

Night-time· 23:00 – 07:00
43.6dB







