21a, Sherwoods Road, Watford, WD19 4AY
About 21a
21a is a four-bedroom semi-detached house in Watford (WD19 4AY). It has a recorded floor area of 146 m² (around 1572 sq ft), construction records dating it to 1967-1975 and council tax band F. The latest certificate (September 2022) shows a D (score 55), a step below the typical UK home. The recommended improvements would push it to C (score 77). Other recorded features include a loft.
2 planning records sit against the property, 1 approved, 0 refused. Past consents include a loft conversion, meaningful when judging how the property has evolved. Across 2002–2024, sale prices on this property compounded at 4.2% per year. On a £-per-square-foot basis, the last sale (£579/sq ft) was about 77.4% above the typical sold price in the postcode. Sold May 2024 for £910,000.
What this property has
Inside
- Bedrooms4
- Bathrooms1
- Dining roomYes
- CloakroomYes
- EnsuiteYes
- LoftYes
Outside
- Private gardenYes
- GarageYes
Energy performance
21a's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Certificate validity
Valid until 5 September 2032
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Planning history
Planning history includes both a loft conversion and an extension — the classic family-home expansion.
2 applications on record at 21a, Sherwoods Road, Watford, WD19 4AY
- Oct 2025Loft ConversionAmendmentOutcome in report
Lawful Development Certificate for a loft conversion, formation of hip to gable end, rear dormer, insertion of roof lights to front slope.
- Documents
- 7 docs on file
- Reference
- 25/00749/LDC
- More recent applications — locked
- ExtensionNov 2025Decision
Unlock 21a, Sherwoods Road, Watford, WD19 4AY's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 4 notable nearby
- The 25 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Sale price has at least doubled since 2002.
£870,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.2% per year over 21 years.
£910,000
Growth on file: 4.2% per year over 21 years.
Sales timeline
14 May 2024Most recent
£910,000
+141.4%over 21 years11 December 2002
£377,000
Median price across the last 5 sales in WD19 4AY: £730,000 (2024–2019).
Nearby sales in WD19 4AY
Versus other Sherwoods Road homes
21a outperforms the street on price per m² by a wide margin.
Price per m²
£6,233
Street avg £3,945
Floor Area
146 m²
Street avg 187 m²
Habitable Rooms
8 rooms
Street avg 7 rooms
CO₂ Emissions
7.4 t/year
Street avg 7.1 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
179/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Sherwoods Road — bus stop.
Closest school
0.6 km
Bromet Primary School. 33 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
46.6dB

Night-time· 23:00 – 07:00
38.8dB







