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40 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH

Estimated value

£710,000

  • Since the 2025 sale (£794,500)-11%
  • Against PO1 3TH's recent median (£550,000)+29%

Newest record on this page: March 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
End terrace
Floor 04
Bedrooms
2
Bathrooms
2
Floor area
113 m²
1216 sq ft
Energy rating
D
Score 64
Council tax
Band E
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£710,000

  • Against its 2025 sale (£794,500)-11%
  • Against PO1 3TH's recent median (£550,000)+29%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 40 Blake House is modelled from its 113 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in PO1 3TH. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    113 m² from the EPC lodged in July 2024

  • Sales of this home

    2 sales recorded, the latest in 2025

  • Recent sales in PO1 3TH

    5 sales, median £550,000 (2025–2022)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: March 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

40 Blake House valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 17 January 2025Most recent

    £794,500

    +13.5%over 7 years

  2. 10 August 2017

    £700,000

Median price across the last 5 sales in PO1 3TH: £550,000 (2025–2022).

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

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Overview

About 40 Blake House

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

40 Blake House is a two-bedroom end-of-terrace house in Portsmouth (PO1 3TH). It has a recorded floor area of 113 m² (around 1216 sq ft), construction records dating it to 2007-2011 and council tax band E. The latest certificate (July 2024) shows a D (score 64), on the cusp of jumping into the C band. Earlier certificates rated it C (October 2012); the latest reading is one band lower. Between certificates, roof efficiency went from Average to Good and lighting went from Poor to Very Good; while hot-water efficiency dropped from Good to Very Poor and main heating dropped from Good to Very Poor. Main heating runs on electricity. At 113 m² this is the 39th 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. Other recorded features include a balcony.

Across 2017–2025, sale prices on this property compounded at 1.7% per year. Today's modelled estimate of £710,000 is 10.6% below the 2025 sale of £794,500, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£653/sq ft) was about 92.1% above the typical sold price in the postcode. At 113 m² it's 20.2% larger than the typical home in the postcode (94 m² median across 42 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 74% of similar EPCs). Sold January 2025 for £794,500.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

  • Bedrooms2
  • Bathrooms2
  • Open-plan layoutYes
  • Dining roomYes
  • EnsuiteYes

Outside

  • ParkingAllocated
  • BalconyYes

Building

  • LiftYes
Before you decide

Everything you need to know about 40 Blake House

The true value, the hidden risks and the full sale history, in one report.

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Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate(1 of 2)
Jul 2024

EPC Rating

A
B
C
D
D64
E
F
G
Main Heating
Electric & Gas
Main Fuel
Electric
Hot Water
Very Poor
Windows
Good
CO2 Emissions
3.2 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 18 July 2034

7 years remaining

Property Improvements

Changes detected from historical EPC data

Jul 2024from Oct 2012
EPC improved fromC77toD64
Main Fuel
GasElectric

Changed to a more efficient fuel source

Hot Water
Main SystemInstantaneous

Hot water system changed

Roof
AverageGood

Roof insulation improved

Low Energy Lighting
18%100%

More low energy lighting installed

Planning

Planning history

Applications and permits filed against 40 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH, sourced from the PlanIt planning register.

40 Blake House has no planning applications on record.

2

But the area is active

2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

On the street

Versus other Gunwharf Quays homes

Four headline reads against 42 similar flats on this street, drawn from the latest EPC and Land Registry data.

Price per m² for 40 Blake House runs comfortably ahead of the street norm.

Price per m²

£7,031

Street avg £4,397

Strongly above

Floor Area

113 m²

Street avg 93 m²

Strongly above

Habitable Rooms

3 rooms

Street avg 3 rooms

On par

CO₂ Emissions

3.2 t/year

Street avg 2.3 t/year

Strongly below
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Portsmouth district page.
Full Portsmouth report

Rail-style transport is unusually close for this postcode.

Crime

501/mo

Falling 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.

Nearest schools

  • St George's Beneficial Church of England (Voluntary Controlled) Primary SchoolPrimary613m
  • St Jude's CofE Primary SchoolPrimary696m
  • Ark Charter AcademySecondary1.4km
  • Cottage Grove Primary School and NurseryPrimary1.5km

Nearest stops

  • Portsmouth IOW Car Ferry TerminalFerry terminal156m
  • Portsmouth IOW Car Ferry TerminalFerry terminal173m
  • Portsmouth Millenium PontoonFerry terminal211m
  • Broad StreetBus stop277m

Most reported crime locally

  • Violence & Sexual Offences2,691 reports38%
  • Shoplifting928 reports13%
  • Anti-social Behaviour766 reports11%
  • Public Order577 reports8%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around PO1 3TH from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for PO1 3TH

Daytime· 07:00 – 23:00

46.9dB

Low
Night-time road noise heatmap for PO1 3TH

Night-time· 23:00 – 07:00

39.6dB

Low
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
SDL Surveying

Get a survey for this property

Level 3 Building Survey

21st centuryMid Floor FlatEPC DNo mains gas

Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.

From £1,220 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£450k

1 Blake House, Gunwharf Quays

PO1 3TH

2 bed
£335k

1 Centurion Court, The Canalside, Gunwharf Quays

PO1 3BQ

2 bed2 bath
£171k

1 Admiralty Tower, Queen Street

PO1 3GA

2 bed2 bath
£219k

1 Jupiter Court, Gunwharf Quays

PO1 3TS

1 bed1 bath
£171k

1 Godolphin House, Bonfire Corner

PO1 3GN

1 bed1 bath
£164k

1 Gloucester House, Queen Street

PO1 3GD

1 bed1 bath
£153k

1 Brunswick House, Queen Street

PO1 3GB

1 bed1 bath
£145k

1 Hamburg House, Cross Street

PO1 3GG

1 bed1 bath

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 40 Blake House is modelled from its 113 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in PO1 3TH. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 2 sales are recorded for 40 Blake House. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 40 Blake House was lodged in July 2024 at band D and is valid until July 2034. 2 certificates are on record, which shows how the home has changed.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 40 Blake House. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 14 months, which places each incident at an approximate point. The 28 schools and 30 stops listed are measured in a straight line from PO1 3TH, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
Council tax band
40 Blake House is in council tax band E. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 40 Blake House, Gunwharf Quays, Portsmouth, PO1 3TH. Each answer is also embedded as structured data for search engines.

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