25a, Norfolk Street, Southsea, PO5 4DR
About 25a
25a is a mid-terrace house in Southsea (PO5 4DR). It has a recorded floor area of 52 m² (around 560 sq ft) and construction records dating it to 1900-1929. At 52 m² this is the 3rd smallest of 22 units on EPC record in the building, where floor areas span 46–209 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (April 2024) shows a C (score 73). The rating has held steady at C across 3 certificates since September 2010. Between certificates, wall efficiency went from Very Poor to Poor and window efficiency went from Average to Good; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good.
Held since July 2003 — that's 23 years off the open market, well above the local norm. At 52 m² it sits well below the postcode median (75 m² across 21 EPCs), making it one of the more compact homes locally. Across 1996–2003, sale prices on this property compounded at 13.6% per year. Today's modelled estimate of £162,000 is 29.6% above the 2003 sale price. On a £-per-square-foot basis, the last sale (£223/sq ft) was about 57.3% above the typical sold price in the postcode.
Know exactly what you're buying at 25a
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Wall insulation improved
More low energy lighting installed
Heating controls upgraded for better temperature management
Window efficiency improved
Planning history
25a has no planning applications on record.
Notable planning nearby
18applications of note in the surrounding area
We flagged 2 things worth checking at 25a
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Sale price has at least doubled since 1996.
£162,000
Modelled from EPC, postcode comparables and a sale-price growth of 13.6% per year over 7 years.
£125,000
Growth on file: 13.6% per year over 7 years.
Sales timeline
17 July 2003Most recent
£125,000
+150.0%over 7 years2 May 1996
£50,000
Median price across the last 5 sales in PO5 4DR: £525,000 (2025–2023).
Nearby sales in PO5 4DR
Everything we know about 25a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

Versus other Norfolk Street homes
Price per m² for 25a runs comfortably ahead of the street norm.
Price per m²
£2,404
Street avg £1,860
Floor Area
52 m²
Street avg 69 m²
Habitable Rooms
4 rooms
Street avg 3 rooms
CO₂ Emissions
1.6 t/year
Street avg 2.1 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
11/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Green Road — bus stop.
Closest school
0.3 km
Cottage Grove Primary School and Nursery. 29 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
55.0dB

Night-time· 23:00 – 07:00
44.4dB