12 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH
About 12 Blake House
12 Blake House is a two-bedroom mid-terrace house in Portsmouth (PO1 3TH). It has a recorded floor area of 66 m² (around 710 sq ft), construction records dating it to 1996-2002 and council tax band E. At 66 m² this is the 6th smallest of 43 units on EPC record in the building, where floor areas span 52–155 m². The building's EPC ratings span E to B across 43 units on file. The latest certificate (September 2015) shows a C (score 78), near the top of the C band. The recommended improvements would push it to B (score 83). The latest certificate is from September 2015, so improvements made since then won't be reflected.
At 66 m² it sits well below the postcode median (96 m² across 42 EPCs), making it one of the more compact homes locally. Across 2002–2016, sale prices on this property compounded at 3.2% per year. Today's modelled estimate of £393,000 is 26% above the 2016 sale price. On a £-per-square-foot basis, the last sale (£439/sq ft) was about 28.8% above the typical sold price in the postcode. Last sold in February 2016, so it's been off the market for around 10 years.
What this property has
Inside
- Bedrooms2
- Bathrooms2
Energy performance
12 Blake House's carbon output is low for the local stock.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 03 Sept 2025
EPC Rating
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Planning history
12 Blake House 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
£393,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.2% per year over 13 years.
£312,000
Growth on file: 3.2% per year over 13 years.
Sales timeline
19 February 2016Most recent
£312,000
+52.2%over 13 years3 October 2002
£205,000
Median price across the last 5 sales in PO1 3TH: £550,000 (2025–2022).
Nearby sales in PO1 3TH
11 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH
Sold Mar 2025
£550,00040 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH
Sold Jan 2025
£794,50039 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH
Sold Feb 2024
£862,50053 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH
Sold Oct 2023
£440,00029 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH
Sold Aug 2022
£455,000
Versus other Gunwharf Quays homes
Floor Area for 12 Blake House lags the street by a wide margin.
Price per m²
£4,727
Street avg £4,459
Floor Area
66 m²
Street avg 93 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
1.5 t/year
Street avg 2.4 t/year
Similar properties nearby
1 Blake House, Gunwharf Quays
PO1 3TH
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PO1 3BQ
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PO1 3TS
1 Blackthorn Terrace, Cumberland Street
PO1 3JW
1 Godolphin House, Bonfire Corner
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1 Brunswick House, Queen Street
PO1 3GB
1 Dean Street
PO1 3BH
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Portsmouth IOW Car Ferry Terminal — ferry terminal.
Closest school
0.6 km
St George's Beneficial Church of England (Voluntary Controlled) Primary School. 28 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
46.9dB

Night-time· 23:00 – 07:00
39.6dB







