23 Colby Street, Southampton, SO16 9RT is a leasehold flat built between 2012-2021. The property offers approximately 667 square feet of living space and is situated on the 2nd floor. In this location, apartments of similar size usually have two bedrooms.

The estimated current market value of the property is £191,544 , which equates to approximately £287 per square foot. It was last sold on 3 Mar 2017 for £174,000. Since then, the value has increased by £17,544, representing a 10.1% increase, or approximately 1.1% per year.

The current estimated value of £191,544 is:

  • 28.7% lower than the average property price on Colby Street
  • 18.1% lower than the average in the SO16 9RT postcode area
  • and 34.0% lower than the average price for Southampton as a whole

At the most recent EPC inspection on 18 August 2025, the property was recorded as rented.

View sold house prices in SO16 9RT

Building approximate location

About Property

Type
Flat
Built
2012-2021
Interior Size
667 sq ft
Tenure
Leasehold
Floor level
2nd floor
Price (estimate)
£191,544
Price Per sq ft (estimate)
£287
Bedroom Count (estimate)
2 bedrooms

EPC Summary

23 Colby Street, Southampton, SO16 9RT has an Energy Performance Certificate (EPC) rating of C, based on the latest assessment carried out on 18 Aug 2025.

This property uses a gas-fired boiler and radiators, connected to the mains gas supply, as its main heating source. Hot water is provided from main heating system. The windows are fully double glazed.

The previous EPC assessment was conducted on 2 Dec 2014, when the property was rated B. The current rating of C reflects a decline in energy efficiency of 10.5%.

Since the previous assessment, several changes were observed:

  • The roof construction or insulation changed from average thermal transmittance 0.09 w/m-¦k to pitched, 350 mm loft insulation, with no change in energy efficiency (very good).
  • The wall construction or insulation changed from average thermal transmittance 0.27 w/m-¦k to cavity wall, as built, insulated (assumed), changing energy efficiency from very good to good.
  • The windows were upgraded from high performance glazing to fully double glazed.
  • The lighting was updated from low energy lighting in all fixed outlets to below average lighting efficiency, with efficiency changing from very good to average.
Heating Type
Boiler and radiators, mains gas
Good
Hot Water
From main system
Good
Roof
Pitched, 350 mm loft insulation
Very Good
Walls
Cavity wall, as built, insulated (assumed)
Good
Windows
Fully double glazed
Average
Lighting
Below average lighting efficiency
Average

Compared to SO16 9RT

19 th / 43
Price Rank
18% lower than average
24 th / 42
Size Rank
12% smaller than average
17 th / 42
Price Per Sq FT Rank
7% lower than average

Compared to other properties in SO16 9RT , this flat's estimated value ranks 19th out of 43. Based on price per square foot, it ranks 17th out of 42 properties. In terms of size, this home ranks 24th out of 42 properties in its postcode area.

Sale History

Today
£191,544
streetscan.co.uk estimate
+10 %
3 Mar 2017
£174,000
Leasehold
+7.4 %
11 Dec 2014
£162,000
Leasehold

Area Insights

Similar Properties Sold Nearby

54 Colby Street, Southampton, SO16 9RT
rooms: 3
size: 732 sq ft
sale price: £175,000
sale date: 14 Feb 2022
10 Colby Street, Southampton, SO16 9RT
rooms: 3
size: 700 sq ft
sale price: £165,000
sale date: 29 Oct 2021
52 Colby Street, Southampton, SO16 9RT
rooms: 3
size: 624 sq ft
sale price: £171,500
sale date: 29 Oct 2019
50 Colby Street, Southampton, SO16 9RT
rooms: 3
size: 689 sq ft
sale price: £180,000
sale date: 15 Feb 2019
15 Colby Street, Southampton, SO16 9RT
rooms: 3
size: 678 sq ft
sale price: £165,000
sale date: 24 Oct 2018

Data Sources

The property at 23 Colby Street, Southampton, SO16 9RT appears two times in the Land Registry records, with the latest transaction recorded on 3 Mar 2017. It also has two Energy Performance Certificates (EPC) entries, the earliest dating back to 18 Aug 2025. We use this data, to estimate the property's characteristics and current market value.

This website uses public sector information from:

These datasets are licensed under the Open Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.


Disclaimer: StreetScan.co.uk makes all reasonable efforts to ensure the information provided on this website is current and accurate; however, no warranties or representations are made as to its completeness or accuracy. StreetScan.co.uk expressly disclaims any and all liability for any loss, damage, or expense arising directly or indirectly from the use of, or reliance upon, such information.
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