27 Colne Avenue, Watford, WD19 4JF
About 27 Colne Avenue
27 Colne Avenue is a three-bedroom semi-detached house in Watford (WD19 4JF). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (January 2020) shows a D (score 55), a step below the typical UK home. When first surveyed in January 2010 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, hot-water efficiency went from Average to Good and main heating went from Average to Good; while roof efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 87), a 2-band jump. Our model identifies extension potential, subject to local planning policy.
One planning record on file: a loft conversion approved in 2025. Past consents include a loft conversion, meaningful when judging how the property has evolved. Across 2003–2023, sale prices on this property compounded at 7.8% per year. On a £-per-square-foot basis, the last sale (£517/sq ft) was about 95.7% above the typical sold price in the postcode. Most recent transfer: October 2023 at £440,000.
What this property has
Inside
- Bedrooms3
- Bathrooms1
Outside
- Private gardenRear
Building
- RefurbishedYes
- Extension potentialPossible
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Wall insulation improved
Planning history
- Nov 2025Loft ConversionAmendmentIn report
Lawful Development Certificate for a hip to gable loft conversion with two front Velux roof lights and all materials to match existing.
- Documents
- 18 docs on file
- Reference
- 25/00929/LDC
We flagged 1 thing worth checking at 27 Colne Avenue
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Latest sale on 27 Colne Avenue was the highest on Land Registry record across the postcode.
£448,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.8% per year over 21 years.
£440,000
Growth on file: 7.8% per year over 21 years.
Sales timeline
27 October 2023Most recent
£440,000
+166.7%over 17 years3 March 2006
£165,000
+77.4%over 3 years17 February 2003
£93,000
Median price across the last 5 sales in WD19 4JF: £395,000 (2022–2007).
Nearby sales in WD19 4JF
Versus other Colne Avenue homes
Years Held for 27 Colne Avenue lags the street by a wide margin.
Price per m²
£5,570
Street avg £4,008
Floor Area
79 m²
Street avg 81 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
4.6 t/year
Street avg 3.1 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Long Croft — bus stop.
Closest school
0.6 km
Bromet Primary School. 34 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
51.0dB

Night-time· 23:00 – 07:00
41.8dB








