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1 Cosham Park Avenue, Portsmouth, PO6 3BG

3 sales on record1 planning record
Property type
Detached
Bedrooms
4
Bathrooms
2
Floor area
99 m²
1066 sq ft
Energy rating
D
Score 66
Council tax
Band E
Tenure
Owner Occupied
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Overview

About 1 Cosham Park Avenue

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

1 Cosham Park Avenue is a four-bedroom detached house in Portsmouth (PO6 3BG). It has a recorded floor area of 99 m² (around 1066 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (June 2026) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in May 2014 the rating was E, the property has climbed 1 band since. Between certificates, lighting went from Average to Good; while window efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 79). This certificate was lodged in the last six months, so the rating reflects current condition. Other recorded features include a conservatory.

Most recent transfer was July 2025 at £370,000 — fresh data. Across 1999–2025, sale prices on this property compounded at 4.2% per year. On a £-per-square-foot basis, the last sale (£347/sq ft) was about 20.6% above the typical sold price in the postcode. One historical planning record sits against the property in 2022.

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

  • Bedrooms4
  • Bathrooms2
  • ConservatoryYes

Outside

  • ParkingOff road

Building

  • Heating systemGas
Before you decide

Everything you need to know about 1 Cosham Park Avenue

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

Signs of HMO activity in the areaLarger development activity nearby

Pick your report · from £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.

The EPC has just been inspected, so the rating reflects current condition.

Current Certificate(1 of 6)
Jun 2026

EPC Rating

A
B
C
D
D66
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Poor
CO2 Emissions
3.4 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 8 June 2036

9 years remaining

Property Improvements

Changes detected from historical EPC data

Jul 2014from May 2014
EPC improved fromE45toD60
Jul 2014from Jul 2014
Roof
Very PoorVery Good

Roof insulation improved

Sept 2015from Jul 2014
EPC improved fromD60toG6
Main Fuel
GasElectric

Changed to a more efficient fuel source

Heating Controls
FullProg + TRVs

Heating controls changed

Hot Water
GoodVery Poor

Hot water efficiency decreased

Windows
AverageGood

Window efficiency improved

Low Energy Lighting
31%0%

Low energy lighting percentage decreased

Jun 2026from Sept 2015
EPC improved fromG6toD66
Main Fuel
ElectricGas

Connected to mains gas supply

Heating Controls
Prog + TRVsFull Control

Heating controls upgraded for better temperature management

Hot Water
Very PoorGood

Hot water efficiency improved

Wall Insulation
UninsulatedInsulated Cavity

Cavity wall insulation installed

Low Energy Lighting
0%100%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 3 Building Survey

Early 20th centuryDetached BungalowEPC DExtended multiple times (2+ extensions)

Because the property has been extended more than once, we believe a Level 3 building survey should be considered.

From £955 · Includes VAT

Planning

Planning history

Applications and permits filed against 1 Cosham Park Avenue, Portsmouth, PO6 3BG, sourced from the PlanIt planning register.

1 application on record at 1 Cosham Park Avenue, Portsmouth, PO6 3BG

1decisions20documents13nearby
  1. Sept 2022
    Full
    Outcome in report

    Construction of single storey building to form workshop, with change of use of part of rear garden from domestic to commercial, and provision of parking space

    Documents
    20 docs on file
    Reference
    22/00772/FUL
    Full record in report

Unlock 1 Cosham Park Avenue, Portsmouth, PO6 3BG's full planning history

You're seeing the shape of it. The report has the substance.

  • Every decision — granted, refused or withdrawn (1 on record)
  • All 1 application on this property in full, plus 13 notable nearby
  • The 20 documents, officer reports & conditions
  • What the pattern means for extending or converting here
£14.99one-off · instant

One time fee only - money back guarantee

Price

Sales history & valuation

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

Latest sale on 1 Cosham Park Avenue was the highest on Land Registry record across the postcode.

Current estimate

£396,000

Modelled from EPC, postcode comparables and a sale-price growth of 4.2% per year over 26 years.

See how we calculated this
Last sold (2025)

£370,000

Growth on file: 4.2% per year over 26 years.

Sales timeline

  1. 24 July 2025Most recent

    £370,000

    +13.3%over 4 years

  2. 27 May 2021

    £326,500

    +155.1%over 21 years

  3. 14 October 1999

    £128,000

Median price across the last 5 sales in PO6 3BG: £310,000 (2025–2018).

On the street

Versus other Cosham Park Avenue homes

Four headline reads against 9 similar houses on this street, drawn from the latest EPC and Land Registry data.

1 Cosham Park Avenue outperforms the street on price per m² by a wide margin.

Price per m²

£3,737

Street avg £2,809

Strongly above

Floor Area

99 m²

Street avg 105 m²

On par

Habitable Rooms

6 rooms

Street avg 5 rooms

Strongly above

CO₂ Emissions

3.4 t/year

Street avg 4.7 t/year

Above
Before you decide

Everything you need to know about 1 Cosham Park Avenue

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

Signs of HMO activity in the areaLarger development activity nearby

Pick your report · from £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.
£396k

1 Colwell Road

PO6 3HH

3 bed1 bath
£728k

1 Dellcrest Path, Drayton

PO6 3LR

4 bed2 bath
£732k

1 Boundary Way, Drayton

PO6 3ND

4 bed
£550k

1 Arran Close

PO6 3UD

5 bed
£266k

1 Bromyard Crescent

PO6 3SP

3 bed1 bath
£255k

1 Blakemere Crescent

PO6 3SG

3 bed
£251k

1 Fairfield Square

PO6 3JS

3 bed
£225k

1 Bell Road

PO6 3NX

3 bed
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

260/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

High Street — bus stop.

Closest school

0.5 km

Court Lane Infant Academy. 26 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 PO6 3BG from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for PO6 3BG

Daytime· 07:00 – 23:00

55.6dB

Moderate
Night-time road noise heatmap for PO6 3BG

Night-time· 23:00 – 07:00

46.1dB

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 1 Cosham Park Avenue, Portsmouth, PO6 3BG. Each answer is also embedded as structured data for search engines.