1/17

4 bed house for sale St. Thomas's Street, Old Portsmouth, PO1

Asking Price

£525,000

Added on 09/10/2026

Type: Terraced
Bedrooms: 4
Bathrooms: 1
Size: £433 per sq ft
Tenure: Freehold

Council tax Band F £3,386 a year

Key features

Grade II Listed townhouse in the heart of Old Portsmouth
Close to Portsmouth Cathedral and historic waterfront landmarks
Arranged over five floors extending to approx. 1,510 sq ft
Full of character with excellent renovation potential
Three/four bedrooms, basement rooms and rear courtyard
Walking distance to Gunwharf Quays, cafés and coastal walks

About this property

Clare House, is a charming Grade II Listed townhouse positioned in the very heart of Old Portsmouth’s historic conservation area, just moments from Portsmouth Cathedral, the Royal Garrison Church and the famous Napoleonic Sea Defences. Offering an exciting opportunity to acquire a genuine piece of local history, this characterful home combines period charm, generous accommodation and exceptional potential in one of Portsmouth’s most sought-after locations.

Floorplan

Council tax

Band F £3,386 a year

Per year

Band A

£1,563
Band B

£1,823
Band C

£2,084
Band D

£2,344
Band E

£2,865
Band F

This home: £3,386
Band G

£3,907
Band H

£4,689

This home is in band F, which costs £3,386 a year in Gosport for 2026/27.

Figures from MHCLG (Open Government Licence v3): the average bill for each band across Gosport, including the typical parish precept, so a parish's own bill can differ a little. Discounts lower the bill, such as 25% off for an adult living alone. Check a home's band on GOV.UK.

Price guide

72 comparables · within 3 miles

Priced above 74% of the 4-bed houses for sale nearby right now.

This home, £525,000 Median £392,500 · £256,000 – £696,500

Per square foot

£433 58% over

4-bed houses nearby £274

Against sold prices

54% over

PO1 sold median £281 / sq ft, 449 sales

Compared with 72 4-bed houses for sale within 3 miles, on the market now or already under offer. The range is the middle 80% of their asking prices. Sold prices are HM Land Registry sales in PO1 over the last 24 months, per square foot of EPC floor area. All sold £/sq ft in PO1 →

Location

St. Thomas's Street, Old Portsmouth, PO1

Open map Street View

Mortgage and stamp duty

Property price £525,000

£262k £788k

Deposit10% £53,000

£0 £525k

Interest rate 4.5%

0.5% 15%

Repayment period 25 years

5 years 40 years

A £472,000 mortgage. Most lenders would want a household income of about £105,000 to support it.

A guide only, for a capital repayment mortgage. The rate you are offered and what you can borrow depend on your circumstances and a full application with a lender or broker. Your home may be repossessed if you do not keep up repayments on your mortgage.

Properties sold nearby

HM Land Registry sales nearby. Floor areas from Energy Performance Certificates where matched.

Address	Type	Sold	Size	Size	£/sq ft	Price
36, St Thomass Street Terraced	Terraced	Sept 2025	1,453 sq ft £413/sq ft	1,453 sq ft	£413	£600,000
85, St Thomass Street Terraced	Terraced	Apr 2025	947 sq ft £538/sq ft	947 sq ft	£538	£510,000
80, St Thomass Street Terraced	Terraced	Oct 2024	883 sq ft £482/sq ft	883 sq ft	£482	£425,000
49, St Thomass Street Terraced	Terraced	Aug 2024	n/a	n/a	n/a	£581,000
23, St Thomass Street Semi-detached	Semi-detached	Jul 2023	840 sq ft £448/sq ft	840 sq ft	£448	£376,500
85, St Thomass Street Terraced	Terraced	Sept 2022	947 sq ft £523/sq ft	947 sq ft	£523	£495,000
90, St Thomass Street Detached	Detached	May 2022	1,378 sq ft £465/sq ft	1,378 sq ft	£465	£640,000
49, St Thomass Street Terraced	Terraced	May 2021	n/a	n/a	n/a	£550,000