Model valuation£417,0008 Busby Close
Local market context
9 Cosham Park Avenue, Portsmouth, PO6 3BG
Property type
Semi-detached
Habitable rooms
5
From EPC
Floor area
97 m²
1044 sq ft
Energy rating
C
Score 71
Council tax
Band C
Tenure
Owner Occupied
About 9 Cosham Park Avenue
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
9 Cosham Park Avenue is a semi-detached house in Portsmouth (PO6 3BG). It has a recorded floor area of 97 m² (around 1044 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (May 2016) shows a C (score 71). The recommended improvements would push it to B (score 84). The latest certificate is from May 2016, so improvements made since then won't be reflected.
Its energy rating outperforms most of the postcode (better than 78% of similar EPCs). Last sold in January 2018, so it's been off the market for around 9 years. Across 2016–2018, sale prices on this property compounded at 22.4% per year. Today's modelled estimate of £371,000 is 21.6% above the 2018 sale price.
Before you decide
Everything you need to know about 9 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 nearbyRecent ownership pattern worth a look
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The data behind every report
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 18 May 2026
Current Certificate
May 2016EPC Rating
A
B
C
C71
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
3.0 t/year
Occupancy
Owner Occupied
Certificate validity
Expired on 18 May 2026
Get a survey for this property
Level 3 Building Survey
Victorian-eraSemi-Detached HouseEPC CPre-1919 build
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
Applications and permits filed against 9 Cosham Park Avenue, Portsmouth, PO6 3BG, sourced from the PlanIt planning register.
9 Cosham Park Avenue has no planning applications on record.
13
But the area is active
13 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
9 Cosham Park Avenue changed hands twice within eighteen months — unusual for the area.
Current estimate
See how we calculated this£371,000
Modelled from EPC, postcode comparables and a sale-price growth of 22.4% per year over 1 year.
Last sold (2018)
£305,000
Growth on file: 22.4% per year over 1 year.
Sales timeline
17 January 2018Most recent
£305,000
+35.0%over 1 year25 July 2016
£226,000
Median price across the last 5 sales in PO6 3BG: £326,500 (2025–2021).
Nearby sales in PO6 3BG
4 Cosham Park Avenue, Portsmouth, PO6 3BG
Sold Nov 2025
£310,00012 Cosham Park Avenue, Portsmouth, PO6 3BG
Sold Nov 2025
£345,0001 Cosham Park Avenue, Portsmouth, PO6 3BG
Sold Jul 2025
£370,0006 Cosham Park Avenue, Portsmouth, PO6 3BG
Sold Jun 2024
£325,00010 Cosham Park Avenue, Portsmouth, PO6 3BG
Sold Jan 2016
£245,249
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.
9 Cosham Park Avenue outperforms the street on epc rating by a wide margin.
Price per m²
£3,144
Street avg £2,908
Floor Area
97 m²
Street avg 106 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.0 t/year
Street avg 4.7 t/year
Property research, connected
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Explore sale histories, valuations, energy ratings and local areas. Ask the assistant to connect the details and take your research further.
Start your researchSimilar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor 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.
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.
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· 07:00 – 23:00
55.6dB
Night-time· 23:00 – 07:00
46.1dB
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4Common questions
The questions buyers, sellers and homeowners most often ask about 9 Cosham Park Avenue, Portsmouth, PO6 3BG. Each answer is also embedded as structured data for search engines.