19 Cassiobury Drive, Watford, WD17 3AA
About 19 Cassiobury Drive
19 Cassiobury Drive is a five-bedroom detached house in Watford (WD17 3AA). It has a recorded floor area of 280 m² (around 3014 sq ft), construction records dating it to 1930-1949 and council tax band G. The latest certificate (September 2020) shows a C (score 69), just inside the C band. When first surveyed in April 2013 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Average to Good and lighting went from Good to Very Good; while roof efficiency dropped from Good to Average. The recommended improvements would push it to B (score 81). Other recorded features include a basement.
At 280 m² the property is well over the postcode median (151 m² across 16 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). 2 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension and a loft conversion, meaningful when judging how the property has evolved. Across 2013–2020, sale prices on this property compounded at 8% per year. Today's modelled estimate of £1,679,000 is 19.1% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£468/sq ft) was about 39.2% above the typical sold price in the postcode. Sold December 2020 for £1,410,000.
What this property has
Inside
- Bedrooms5
- Bathrooms3
- Dining roomYes
- EnsuiteYes
- BasementYes
Outside
- Private gardenYes
- GarageYes
Building
- RefurbishedYes
Energy performance
19 Cassiobury Drive's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Certificate validity
Valid until 1 September 2030
Property Improvements
Changes detected from historical EPC data
Window efficiency 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 £1,795 · Includes VAT
Planning history
2 applications on record at 19 Cassiobury Drive, Watford, WD17 3AA
- Dec 2013Loft ConversionAmendmentOutcome in report
Extension: Single storey · Rear of property
Lawful Development Certificate for erection of single storey rear extension and loft conversion with rear dormer.
Extension- Documents
- 29 docs on file
- Reference
- 13/01097/LDC
- More recent applications — locked
- FullFeb 2014Decision
Unlock 19 Cassiobury Drive, Watford, WD17 3AA'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 1 notable nearby
- The 39 documents, officer reports & conditions
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
Latest sale on 19 Cassiobury Drive was the highest on Land Registry record across the postcode.
£1,679,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.0% per year over 7 years.
£1,410,000
Growth on file: 8.0% per year over 7 years.
Sales timeline
9 December 2020Most recent
£1,410,000
+77.4%over 7 years9 July 2013
£795,000
Median price across the last 5 sales in WD17 3AA: £974,500 (2025–2019).
Nearby sales in WD17 3AA
13 Cassiobury Drive, Watford, WD17 3AA
Sold Sept 2025
£975,00029 Cassiobury Drive, Watford, WD17 3AA
Sold Apr 2024
£1,021,00021 Cassiobury Drive, Watford, WD17 3AA
Sold Nov 2022
£850,00039 Cassiobury Drive, Watford, WD17 3AA
Sold Sept 2019
£974,50015 Cassiobury Drive, Watford, WD17 3AA
Sold Sept 2019
£930,000
Versus other Cassiobury Drive homes
Floor Area for 19 Cassiobury Drive runs comfortably ahead of the street norm.
Price per m²
£5,036
Street avg £5,339
Floor Area
280 m²
Street avg 163 m²
Habitable Rooms
8 rooms
Street avg 7 rooms
CO₂ Emissions
8.9 t/year
Street avg 7.4 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
266/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Cassiobury Park Avenue — bus stop.
Closest school
0.2 km
West Herts College. 35 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
52.4dB

Night-time· 23:00 – 07:00
43.3dB







