ePrivacy and GPDR Cookie Consent by Cookie Consent Resi | House prices on Union Street, SE1, Southwark, Inner London

House prices on Union Street, SE1 in 2025

Last year, we saw 3 properties sold in the area, with an average house price of £623,333. This represents a decrease of -40.0% in the volume of transactions year on year. Meanwhile the average selling price saw a decrease of -90.8% in the same period. The average value add score for the area is 47.

91 properties

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235 Flat 10 Union Street

Flat
Leasehold
61 SQM

£303,503 • Est. today

£103,428 • Dec 2014

50

Potential to add value is

Medium

235 Flat 13 Union Street

Flat
Leasehold
63 SQM

£303,503 • Est. today

£103,428 • Dec 2014

50

Potential to add value is

Medium

235 Flat 11 Union Street

Flat
Leasehold
64 SQM

£303,503 • Est. today

£103,428 • Dec 2014

50

Potential to add value is

Medium

How much value will my extension add?

235 Flat 8 Union Street

Flat
Leasehold

£303,503 • Est. today

£103,428 • Dec 2014

40

Potential to add value is

Low

Ernst Building, 142 Apartment 6 Union Street

Flat
Leasehold
91 SQM

£973,393 • Est. today

£923,500 • Jul 2014

+ 1 more

50

Potential to add value is

Medium

Ernst Building, 142 Apartment 8 Union Street

Flat
Leasehold
99 SQM

£762,590 • Est. today

£794,500 • Jul 2014

+ 1 more

50

Potential to add value is

Medium

Ernst Building, 142 Apartment 1 Union Street

Flat
Leasehold
91 SQM

£762,590 • Est. today

£794,500 • Jul 2014

+ 1 more

50

Potential to add value is

Medium

Ernst Building, 142 Apartment 3 Union Street

Flat
Leasehold
99 SQM

£748,665 • Est. today

£745,400 • Jul 2014

+ 1 more

50

Potential to add value is

Medium

Ernst Building, 142 Apartment 4 Union Street

Flat
Leasehold
91 SQM

£830,450 • Est. today

£899,500 • Jul 2014

+ 1 more

50

Potential to add value is

Medium

Ernst Building, 142 Apartment 2 Union Street

Flat
Leasehold
91 SQM

£735,400 • Est. today

£710,350 • Jul 2014

+ 1 more

50

Potential to add value is

Medium

Ernst Building, 142 Apartment 7 Union Street

Flat
Leasehold
99 SQM

£680,960 • Est. today

£775,400 • Jul 2014

+ 1 more

50

Potential to add value is

Medium

Ernst Building, 142 Apartment 5 Union Street

Flat
Leasehold
99 SQM

£752,885 • Est. today

£760,400 • Jul 2014

+ 1 more

50

Potential to add value is

Medium

Ciba Apartments, 101 Flat 5 Union Street

Flat
Leasehold
75 SQM

£745,090 • Est. today

£675,000 • Jan 2014

+ 2 more

33

Potential to add value is

Low

162 Flat C Union Street

Flat
Leasehold

£731,490 • Est. today

£612,000 • Aug 2013

40

Potential to add value is

Low

31 Union Street

Flat
Leasehold

£629,754 • Est. today

£450,000 • Jun 2013

+ 2 more

22

Potential to add value is

Low

Ciba Apartments, 101 Flat 2 Union Street

Flat
Leasehold
75 SQM

£836,170 • Est. today

£530,000 • Mar 2012

+ 2 more

41

Potential to add value is

Low

Ciba Apartments, 101 Flat 3 Union Street

Flat
Leasehold

£743,950 • Est. today

£485,000 • Sep 2011

+ 2 more

30

Potential to add value is

Low

Ciba Apartments, 101 Flat 6 Union Street

Flat
Leasehold
73 SQM

£749,340 • Est. today

£487,950 • Jun 2011

+ 2 more

41

Potential to add value is

Low

152 - 154 Union Street

Other
Freehold

£415,862 • Est. today

£200,000 • May 2011

+ 1 more

60

Potential to add value is

Medium

144 Union Street

Flat
Leasehold
41 SQM

£486,550 • Est. today

£200,000 • Oct 2009

65

Potential to add value is

Medium

146 Union Street

Flat
Leasehold
41 SQM

£561,740 • Est. today

£200,000 • Jun 2009

65

Potential to add value is

Medium

150 Union Street

Flat
Leasehold
34 SQM

£526,115 • Est. today

£243,000 • Jan 2009

+ 1 more

65

Potential to add value is

Medium

Ciba Apartments, 101 Flat 4 Union Street

Flat
Leasehold
80 SQM

£604,735 • Est. today

£470,000 • Jan 2008

+ 2 more

48

Potential to add value is

Low

Ciba Apartments, 101 Flat 1 Union Street

Flat
Leasehold

£728,355 • Est. today

£495,000 • Oct 2007

+ 2 more

30

Potential to add value is

Low

77a Union Street

Terraced
Freehold
87 SQM

£559,320 • Est. today

£266,000 • Sep 2005

+ 1 more

48

Potential to add value is

Low

Where does this data come from?

The property price data for England and Wales that you see on our website is sourced primarily from HM Land Registry's Price Paid Data. This dataset is the one source of truth for most of the country’s residential property transactions. Where available, we’ve enhanced this with information gathered from Energy Performance Certificate (EPC) data and then further added to it with records from various trusted additional sources. This material was last updated on October 7, 2024.

Some of the figures you see above, such as the Value Potential score are constructed using our own proprietary algorithmic modelling. They are most decidedly estimates, and may be off the mark. Please use this information cautiously, and as a guide only. If in doubt, and certainly before putting in an offer anywhere, please speak with your local estate agent to get a better understanding of the property’s valuation.

Union Street, SE1 house prices in 2025
 

Number of properties sold