20a, Osborne Road, Watford, WD24 7BA
About 20a
20a is a detached house in Watford (WD24 7BA). It has a recorded floor area of 37 m² (around 393 sq ft), construction records dating it to 1900-1929 and council tax band B. At 37 m² this is the smallest unit on EPC record across the building (37–162 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (January 2009) shows a C (score 70). The latest certificate is from January 2009, so improvements made since then won't be reflected.
At 37 m² it sits well below the postcode median (79 m² across 19 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 79% of similar EPCs). One historical planning record sits against the property in 2005.
Energy performance
20a's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 24 Jan 2019
EPC Rating
Planning history
- Apr 2005OutlineIn report
Certificate of Lawfulness for existing use of premiseds as two self contained flats
Retrospective- Documents
- 11 docs on file
- Reference
- 05/00229/LUC
We flagged 1 thing worth checking at 20a
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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
20a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£235,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in WD24 7BA: £420,000 (2025–2020).
Nearby sales in WD24 7BA
Versus other Osborne Road homes
Floor Area for 20a lags the street by a wide margin.
EPC Rating
70 (C)
Street avg 68 (D)
Floor Area
37 m²
Street avg 39 m²
CO₂ Emissions
2.1 t/year
Street avg 1.8 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Windsor Road — bus stop.
Closest school
0.2 km
Parkgate Junior School. 32 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
51.7dB

Night-time· 23:00 – 07:00
41.0dB








