23 Colby Street, Southampton, SO16 9RT
About 23 Colby Street
23 Colby Street is a two-bedroom semi-detached house in Southampton (SO16 9RT). It has a recorded floor area of 62 m² (around 667 sq ft) and construction records dating it to 2012-2021. Tenure is freehold. At 62 m² this is the 26th smallest of 67 units on EPC record in the building, where floor areas span 38–120 m². The building's EPC ratings span C to B, with this unit at the bottom. The latest certificate (August 2025) shows a C (score 77), near the top of the C band. Earlier certificates rated it B (December 2014); the latest reading is one band lower. Between certificates, wall efficiency dropped from Very Good to Good and window efficiency dropped from Very Good to Average.
On the market in March 2017 and unlisted since — roughly 9 years. Across 2014–2017, sale prices on this property compounded at 3.3% per year. Today's modelled estimate of £198,000 is 13.8% above the 2017 sale price.
What this property has
Inside
- Bedrooms2
- Bathrooms1
Outside
- ParkingAllocated
Building
- TenureFreehold
- RefurbishedYes
Energy performance
23 Colby Street's carbon output is low for the local stock.
EPC Rating
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Planning history
23 Colby Street has no planning applications on record.
But the area is active
3 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
£198,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.3% per year over 2 years.
£174,000
Growth on file: 3.3% per year over 2 years.
Sales timeline
3 March 2017Most recent
£174,000
+7.4%over 2 years11 December 2014
£162,000
Median price across the last 5 sales in SO16 9RT: £155,000 (2023–2022).
Nearby sales in SO16 9RT
Versus other Colby Street homes
23 Colby Street is notably below the street on epc rating.
Price per m²
£2,806
Street avg £2,865
Floor Area
62 m²
Street avg 60 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
1.1 t/year
Street avg 1.0 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Green Lane — bus stop.
Closest school
0.3 km
Oasis Academy Lord's Hill. 27 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
52.5dB

Night-time· 23:00 – 07:00
42.6dB







