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12 Arethusa House, Gunwharf Quays, Portsmouth, PO1 3TQ

Notable views3 sales on record
Property type
Detached
Floor 03
Bedrooms
3
Bathrooms
3
Floor area
115 m²
1238 sq ft
Energy rating
C
Score 79
Council tax
Band F
Tenure
Owner Occupied
Overview

About 12 Arethusa House

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

12 Arethusa House is a three-bedroom detached house in Portsmouth (PO1 3TQ). It has a recorded floor area of 115 m² (around 1238 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (August 2022) shows a C (score 79), near the top of the C band. When first surveyed in October 2008 the rating was D, the property has climbed 1 band since. Between certificates, hot-water efficiency went from Poor to Good and lighting went from Poor to Very Good. At 115 m² this is the 47th smallest of 52 units on EPC record in the building, where floor areas span 59–171 m². The building's EPC ratings span E to B across 52 units on file. Other recorded features include a balcony and notable views.

Across 2011–2023, sale prices on this property compounded at 3.9% per year. Today's modelled estimate of £703,000 is 10.4% below the 2023 sale of £785,000, 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 (£634/sq ft) was about 93.5% above the typical sold price in the postcode. At 115 m² it's 21.1% larger than the typical home in the postcode (95 m² median across 51 EPCs). Sold August 2023 for £785,000.

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

  • Bedrooms3
  • Bathrooms3
  • CloakroomYes
  • EnsuiteYes

Outside

  • ParkingUnderground
  • BalconyYes
  • Notable viewsYes
Before you decide

Everything you need to know about 12 Arethusa House

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

Pick your report · every report is £14.99

One time fee only - money back guarantee

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 3)
Aug 2022

EPC Rating

A
B
C
C79
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.3 t/year
Occupancy
Owner Occupied

Property Improvements

Changes detected from historical EPC data

Jul 2011from Oct 2008
EPC improved fromD65toC79
Hot Water
Immersion (Off-Peak)Main System

Hot water system upgraded

Windows
AverageGood

Window efficiency improved

Roof
AverageGood

Roof insulation improved

Low Energy Lighting
20%43%

More low energy lighting installed

Ventilation
ExtractNatural

Ventilation system changed

Aug 2022from Jul 2011
Low Energy Lighting
43%100%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Late 20th century3rd Floor FlatEPC C

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

From £995 · Includes VAT

Planning

Planning history

Applications and permits filed against 12 Arethusa House, Gunwharf Quays, Portsmouth, PO1 3TQ, sourced from the PlanIt planning register.

12 Arethusa House has no planning applications on record.

3

But the area is active

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

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

12 Arethusa House valuation sits well clear of the typical sold price in this postcode.

Current estimate

£703,000

Modelled from EPC, postcode comparables and a sale-price growth of 3.9% per year over 12 years.

See how we calculated this
Last sold (2023)

£785,000

Growth on file: 3.9% per year over 12 years.

Sales timeline

  1. 10 August 2023Most recent

    £785,000

    +57.0%over 11 years

  2. 21 June 2012

    £500,000

  3. 27 October 2011

    £500,000

Median price across the last 5 sales in PO1 3TQ: £390,000 (2025–2022).

On the street

Versus other Gunwharf Quays homes

Four headline reads against 51 similar flats on this street, drawn from the latest EPC and Land Registry data.

Price per m² for 12 Arethusa House runs comfortably ahead of the street norm.

Price per m²

£6,826

Street avg £3,885

Strongly above

Floor Area

115 m²

Street avg 94 m²

Strongly above

Habitable Rooms

4 rooms

Street avg 3 rooms

Strongly above

CO₂ Emissions

2.3 t/year

Street avg 2.2 t/year

On par
Before you decide

Everything you need to know about 12 Arethusa House

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

Pick your report · every report is £14.99

One time fee only - money back guarantee

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
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
£341k

1 Blackthorn Terrace, Cumberland Street

PO1 3JW

4 bed2 bath
£336k

1 Centurion Court, The Canalside, Gunwharf Quays

PO1 3BQ

2 bed2 bath
£310k

1 Dean Street

PO1 3BH

4 bed3 bath
£166k

1 Admiralty Tower, Queen Street

PO1 3GA

2 bed2 bath
£431k

1 Blossom Square

PO1 3JH

5 bed
£217k

1 Jupiter Court, Gunwharf Quays

PO1 3TS

1 bed1 bath
£166k

1 Godolphin House, Bonfire Corner

PO1 3GN

1 bed1 bath
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

9/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Portsmouth IOW Car Ferry Terminal — ferry terminal.

Closest school

0.6 km

St Jude's CofE 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.

Noise

Road noise across the postcode

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

Daytime· 07:00 – 23:00

47.0dB

Low
Night-time road noise heatmap for PO1 3TQ

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
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 12 Arethusa House, Gunwharf Quays, Portsmouth, PO1 3TQ. Each answer is also embedded as structured data for search engines.