17 Colby Street, Southampton, SO16 9RT
About 17 Colby Street
17 Colby Street is a one-bedroom property in Southampton (SO16 9RT). It has a recorded floor area of 48 m² (around 517 sq ft) and construction records dating it to 2012-2021. At 48 m² this is the 6th 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 (November 2025) shows a C (score 75), 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.
Across 2014–2022, sale prices on this property compounded at 2.9% per year. On a £-per-square-foot basis, the last sale (£300/sq ft) was about 22.7% above the typical sold price in the postcode. At 48 m² it's 23.8% smaller than the typical home in the postcode (63 m² median across 66 EPCs). Most recent transfer: June 2022 at £155,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms1
- Bathrooms1
Everything you need to know about 17 Colby Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
17 Colby Street's carbon output is low for the local stock.
EPC Rating
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Planning history
17 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
17 Colby Street saw 3 transfers in just over a decade — high turnover for the postcode.
£164,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.9% per year over 8 years.
£155,000
Growth on file: 2.9% per year over 8 years.
Sales timeline
23 June 2022Most recent
£155,000
+9.9%over 5 years2 May 2017
£141,000
+12.8%over 2 years19 December 2014
£125,000
Median price across the last 5 sales in SO16 9RT: £160,000 (2023–2022).
Nearby sales in SO16 9RT
Versus other Colby Street homes
On years held, 17 Colby Street runs well behind the street norm.
Price per m²
£3,229
Street avg £2,852
Floor Area
48 m²
Street avg 60 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
1.0 t/year
Street avg 1.0 t/year
Everything you need to know about 17 Colby Street
The true value, the hidden risks and the full sale history, in one report.
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One time fee only - money back guarantee
The data behind every report
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