21 Alva Way, Watford, WD19 5EE
About 21 Alva Way
21 Alva Way is a two-bedroom detached house in Watford (WD19 5EE). It has a recorded floor area of 217 m² (around 2336 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (August 2025) shows a C (score 76), near the top of the C band. When first surveyed in May 2017 the rating was G, the property has climbed 4 bands since. Between certificates, window efficiency went from Very Poor to Average, hot-water efficiency went from Very Poor to Good and lighting went from Average to Very Good; while roof efficiency dropped from Good to Average. The recommended improvements would push it to B (score 83).
At 217 m² the property is well over the postcode median (102 m² across 10 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £843,000 sits 81.3% above the 2017 sale of £465,000. On a £-per-square-foot basis, the last sale (£199/sq ft) was about 29.5% below the postcode norm. 9 planning records sit against the property, 4 approved, 4 refused. Past consents include an extension, an annexe and a loft conversion, meaningful when judging how the property has evolved. On the market in August 2017 and unlisted since — roughly 9 years.
What this property has
Inside
- Bedrooms2
- Bathrooms1
- Dining roomYes
- EnsuiteYes
Outside
- GarageYes
Building
- RefurbishedYes
Energy performance
EPC Rating
Certificate validity
Valid until 11 August 2035
Property Improvements
Changes detected from historical EPC data
Upgraded to gas central heating
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
Floor insulation added or improved
More low energy lighting installed
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 £1,360 · Includes VAT
Planning history
21 Alva Way has 4 separate extension applications on the council record.
9 applications on record at 21 Alva Way, Watford, WD19 5EE
- Sept 2017ExtensionOutlineOutcome in report
Extension: Single storey · Rear of property
Prior Approval: Single storey rear extension (depth 8 metres, maximum height 4 metres and eaves height 3 metres)
- Documents
- 5 docs on file
- Reference
- 17/1784/PDE
- More recent applications — locked
- AnnexNov 2019Decision
- AmendmentJun 2019Decision
+ 6 more applications in the report
Unlock 21 Alva Way, Watford, WD19 5EE's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (9 on record)
- All 9 applications on this property in full
- The 70 documents, officer reports & conditions
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
21 Alva Way valuation sits well clear of the typical sold price in this postcode.
£843,000
Modelled from EPC, postcode comparables.
£465,000
Recorded with HM Land Registry.
Sales timeline
24 August 2017Most recent
£465,000
Median price across the last 5 sales in WD19 5EE: £510,000 (2025–2020).
Versus other Alva Way homes
21 Alva Way is notably below the street on price per m².
Price per m²
£2,143
Street avg £4,297
Floor Area
217 m²
Street avg 98 m²
Habitable Rooms
7 rooms
Street avg 4 rooms
CO₂ Emissions
5.0 t/year
Street avg 4.1 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
0.0 km
Alva Way — bus stop.
Closest school
0.5 km
Warren Dell Primary School. 27 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
49.0dB

Night-time· 23:00 – 07:00
39.1dB







