21 Colebrook Avenue, Southampton, SO15 5NS
About 21 Colebrook Avenue
21 Colebrook Avenue is a three-bedroom semi-detached house in Southampton (SO15 5NS). It has a recorded floor area of 98 m² (around 1055 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (April 2015) shows a D (score 63), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since March 2011. Between certificates, hot-water efficiency went from Average to Good and main heating went from Average to Good; while roof efficiency dropped from Average to Very Poor. The recommended improvements would push it to C (score 78). The latest certificate is from April 2015, so improvements made since then won't be reflected. Period features are noted in the property record.
Across 2012–2015, sale prices on this property compounded at 17.9% per year. Today's modelled estimate of £397,000 is 26% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£299/sq ft) was about 32.5% above the typical sold price in the postcode. On the market in July 2015 and unlisted since — roughly 11 years.
What this property has
Inside
- Bedrooms3
- Open-plan layoutYes
- Dining roomYes
- CloakroomYes
Outside
- Private gardenRear
- DrivewayYes
Building
- Central heatingYes
- Period featuresYes
- RefurbishedYes
Everything you need to know about 21 Colebrook Avenue
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
21 Colebrook Avenue's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 30 Apr 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
More low energy lighting installed
Low energy lighting percentage decreased
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Planning history
21 Colebrook Avenue has no planning applications on record.
But the area is active
31 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
21 Colebrook Avenue saw 3 transfers in just over a decade — high turnover for the postcode.
£397,000
Modelled from EPC, postcode comparables and a sale-price growth of 17.9% per year over 3 years.
£315,000
Growth on file: 17.9% per year over 3 years.
Sales timeline
19 July 2015Most recent
£315,000
+16.7%over 2 years21 December 2012
£270,000
+42.9%over 6 months13 June 2012
£189,000
Median price across the last 5 sales in SO15 5NS: £360,000 (2025–2024).
Nearby sales in SO15 5NS
13 Colebrook Avenue, Southampton, SO15 5NS
Sold Aug 2025
£417,5003 Colebrook Avenue, Southampton, SO15 5NS
Sold Jan 2025
£180,0001 Colebrook Avenue, Southampton, SO15 5NS
Sold Jan 2025
£360,00027 Colebrook Avenue, Southampton, SO15 5NS
Sold Sept 2024
£495,0005 Colebrook Avenue, Southampton, SO15 5NS
Sold Sept 2023
£380,000
Versus other Colebrook Avenue homes
On years held, 21 Colebrook Avenue stands well clear of the street.
Price per m²
£3,214
Street avg £3,479
Floor Area
98 m²
Street avg 105 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.8 t/year
Street avg 3.8 t/year
Everything you need to know about 21 Colebrook Avenue
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
12/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Colebrook Avenue — bus stop.
Closest school
0.2 km
Shirley Infant School. 37 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
51.3dB

Night-time· 23:00 – 07:00
41.0dB






