Skip to content
UK Property Looker

21 Cassiobury Drive, Watford, WD17 3AA

Property type
Detached
Bedrooms
2
Floor area
100 m²
1076 sq ft
Energy rating
D
Score 58
Council tax
Band F
Tenure
Owner Occupied
Get directions (opens in a new tab)
Overview

About 21 Cassiobury Drive

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

21 Cassiobury Drive is a two-bedroom detached house in Watford (WD17 3AA). It has a recorded floor area of 100 m² (around 1076 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (July 2022) shows a D (score 58), a step below the typical UK home. When first surveyed in March 2010 the rating was F, the property has climbed 2 bands since. Between certificates, window efficiency went from Poor to Average, hot-water efficiency went from Poor to Good and main heating went from Average to Good. The recommended improvements would lift it to B (score 83), a 2-band jump.

At 100 m² it sits well below the postcode median (163 m² across 16 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £939,000 is 10.5% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£790/sq ft) was about 136.7% above the typical sold price in the postcode. Most recent transfer: November 2022 at £850,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms2

Outside

  • Private gardenSouth-facing
  • GarageIntegral

Building

  • Heating systemGas
Before you decide

Everything you need to know about 21 Cassiobury Drive

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearby

Pick your report · from £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

Recommended upgrades on file would lift this property by multiple EPC bands.

Current Certificate(1 of 2)
Jul 2022

EPC Rating

A
B
C
D
D58
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
5.1 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 25 July 2032

5 years remaining

Property Improvements

Changes detected from historical EPC data

Jul 2022from Mar 2010
EPC improved fromF27toD58
Heating Controls
Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water
Main (No Stat)Main System

Hot water system upgraded

Windows
SecondaryFull Double

Windows upgraded, improving insulation

SDL Surveying

Get a survey for this property

Level 3 Building Survey

Victorian-eraDetached BungalowEPC DPre-1919 buildExtended multiple times (2+ extensions)Solid (non-cavity) walls

Because the property was built before 1919, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.

From £1,495 · Includes VAT

Planning

Planning history

Applications and permits filed against 21 Cassiobury Drive, Watford, WD17 3AA, sourced from the PlanIt planning register.

21 Cassiobury Drive has no planning applications on record.

1

But the area is active

1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

The latest sale landed in the post-pandemic price surge — useful context when reading the figure.

Current estimate

£939,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2022)

£850,000

Recorded with HM Land Registry.

Sales timeline

  1. 25 November 2022Most recent

    £850,000

Median price across the last 5 sales in WD17 3AA: £975,000 (2025–2019).

On the street

Versus other Cassiobury Drive homes

Four headline reads against 16 similar houses on this street, drawn from the latest EPC and Land Registry data.

Floor Area for 21 Cassiobury Drive lags the street by a wide margin.

Price per m²

£8,500

Street avg £5,108

Strongly above

Floor Area

100 m²

Street avg 174 m²

Strongly below

Habitable Rooms

5 rooms

Street avg 8 rooms

Strongly below

CO₂ Emissions

5.1 t/year

Street avg 7.6 t/year

Strongly above
Before you decide

Everything you need to know about 21 Cassiobury Drive

The true value, the hidden risks and the full sale history, in one report.

Larger development activity nearby

Pick your report · from £14.99

One time fee only - money back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£889k

1 Farm Field

WD17 3DF

2 bed
£832k

10 Bellmount Wood Avenue

WD17 3BW

3 bed1 bath
£826k

1 Berceau Walk

WD17 3BL

3 bed1 bath
£802k

1 Orchard Close

WD17 3DU

3 bed1 bath
£390k

1 The Grove Mill, Grove Mill Lane

WD17 3TU

2 bed1 bath
£600k

10 Berceau Walk

WD17 3BL

3 bed
£850k

1 Bellmount Wood Avenue

WD17 3BN

4 bed
£1.0m

1 Roughwood Close

WD17 3HN

4 bed2 bath
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Watford district page.
Full Watford report

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.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around WD17 3AA from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for WD17 3AA

Daytime· 07:00 – 23:00

52.4dB

Low
Night-time road noise heatmap for WD17 3AA

Night-time· 23:00 – 07:00

43.3dB

Low
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 21 Cassiobury Drive, Watford, WD17 3AA. Each answer is also embedded as structured data for search engines.