Model valuation£417,0008 Busby Close
Local market context
99a, High Street, Cosham, Portsmouth, PO6 3AZ
Property type
End terrace
Floor 01
Bedroom
1
Bathroom
1
Floor area
57 m²
614 sq ft
Energy rating
C
Score 69
Council tax
Band A
Tenure
Private Rental
About 99a
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
99a is a one-bedroom end-of-terrace house in Cosham, Portsmouth, Portsmouth (PO6 3AZ). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1900-1929 and council tax band A. At 57 m² this is the 10th smallest of 14 units on EPC record in the building, where floor areas span 49–84 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (March 2021) shows a C (score 69), just inside the C band. When first surveyed in December 2008 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good; while roof efficiency dropped from Good to Average.
It hasn't traded since March 1996, a hold of 30 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £149,000 sits 189.3% above the 1996 sale of £51,500. On a £-per-square-foot basis, the last sale (£84/sq ft) was about 54.4% below the postcode norm. Its energy rating outperforms most of the postcode (better than 77% of similar EPCs). 1 bedrooms is on the smaller side for this postcode, where 3 is the typical count.
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
- Bedrooms1
- Bathrooms1
Before you decide
Everything you need to know about 99a
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
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.
Current Certificate(1 of 2)
Mar 2021
EPC Rating
A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
2.2 t/year
Occupancy
Rented
Certificate validity
Valid until 8 March 2031
Property Improvements
Changes detected from historical EPC data
Mar 2021from Dec 2008
EPC improved fromD63toC69
Low Energy Lighting
0%100%
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Victorian-era1st Floor FlatEPC CPre-1919 build
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
Applications and permits filed against 99a, High Street, Cosham, Portsmouth, PO6 3AZ, sourced from the PlanIt planning register.
99a 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.
99a has been held in the same hands since before 2000.
Current estimate
See how we calculated this£149,000
Modelled from EPC, postcode comparables.
Last sold (1996)
£51,500
Recorded with HM Land Registry.
Sales timeline
7 March 1996Most recent
£51,500
Median price across the last 5 sales in PO6 3AZ: £120,000 (2025–2019).
Nearby sales in PO6 3AZ
75 High Street, Cosham, Portsmouth, PO6 3AZ
Sold Apr 2025
£85,00085a, High Street, Cosham, Portsmouth, PO6 3AZ
Sold Oct 2023
£115,00091a, High Street, Cosham, Portsmouth, PO6 3AZ
Sold Apr 2022
£120,000101b, High Street, Cosham, Portsmouth, PO6 3AZ
Sold Sept 2021
£225,00087 High Street, Cosham, Portsmouth, PO6 3AZ
Sold Sept 2019
£217,000
Versus other High Street homes
Four headline reads against 13 similar flats on this street, drawn from the latest EPC and Land Registry data.
On price per m², 99a runs well behind the street norm.
Price per m²
£904
Street avg £2,599
Floor Area
57 m²
Street avg 61 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
2.2 t/year
Street avg 3.3 t/year
Property research, connected
Get up to date data on unlimited properties per month
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
0.0 km
High Street — bus stop.
Closest school
0.5 km
Court Lane Infant Academy. 25 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 3AZ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
55.5dB
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 99a, High Street, Cosham, Portsmouth, PO6 3AZ. Each answer is also embedded as structured data for search engines.