18 Greenfield Avenue, Watford, WD19 5DN
About 18 Greenfield Avenue
18 Greenfield Avenue is a three-bedroom semi-detached house in Watford (WD19 5DN). It has a recorded floor area of 95 m² (around 1023 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (June 2016) shows an E (score 52), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since October 2011. Between certificates, roof efficiency went from Average to Good and lighting went from Poor to Very Good. The recommended improvements would lift it to C (score 80), a 2-band jump. The latest certificate is from June 2016, so improvements made since then won't be reflected. Records show the property has been extended at some point in its history.
One planning record on file: a loft conversion approved in 2018. Past consents include a loft conversion, meaningful when judging how the property has evolved. At 95 m² it's 18.8% larger than the typical home in the postcode (80 m² median across 17 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs). Across 2011–2017, sale prices on this property compounded at 14.1% per year. Today's modelled estimate of £600,000 is 10.7% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£530/sq ft) was about 38.4% above the typical sold price in the postcode. Last sold in June 2017, so it's been off the market for around 9 years.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
Outside
- Private gardenFront and rear
- GarageYes
Building
- Heating systemGas
- Previously extendedYes
- RefurbishedYes
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 07 Jun 2026
EPC Rating
Certificate validity
Expired on 7 June 2026
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation 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, we believe a Level 3 building survey should be considered.
From £1,085 · Includes VAT
Planning history
1 application on record at 18 Greenfield Avenue, Watford, WD19 5DN
- Feb 2018Loft ConversionOutlineOutcome in report
Certificate of Lawfulness for Proposed Use: Loft conversion including hip-to-gable extension and insertion of rear dormer and front rooflights
- Documents
- 11 docs on file
- Reference
- 17/2630/CLPD
Unlock 18 Greenfield Avenue, Watford, WD19 5DN's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full
- The 11 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
18 Greenfield Avenue has more than doubled in price since the earliest registered sale in 2011.
£600,000
Modelled from EPC, postcode comparables and a sale-price growth of 14.1% per year over 5 years.
£542,000
Growth on file: 14.1% per year over 5 years.
Sales timeline
15 June 2017Most recent
£542,000
+106.5%over 5 years19 December 2011
£262,500
Median price across the last 5 sales in WD19 5DN: £540,000 (2026–2020).
Nearby sales in WD19 5DN
Versus other Greenfield Avenue homes
On co₂ emissions, 18 Greenfield Avenue runs well behind the street norm.
Price per m²
£5,705
Street avg £5,703
Floor Area
95 m²
Street avg 92 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
5.4 t/year
Street avg 3.5 t/year
Similar properties nearby
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
0.2 km
Upper Hitch — bus stop.
Closest school
0.3 km
St Meryl School. 25 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
40.3dB







