23 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG
About 23 Carmarthen Avenue
23 Carmarthen Avenue is a semi-detached house in Drayton, Portsmouth, Portsmouth (PO6 2AG). It has a recorded floor area of 138 m² (around 1485 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (June 2021) shows a D (score 58), a step below the typical UK home. The recommended improvements would lift it to B (score 83), a 2-band jump.
Today's modelled estimate of £652,000 is 15.8% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£379/sq ft) was about 47.5% above the typical sold price in the postcode. 2 planning records sit against the property, 0 approved, 0 refused. At 138 m² it's 15.1% smaller than the typical home in the postcode (163 m² median across 18 EPCs). Sold September 2021 for £563,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 23 Carmarthen Avenue
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
23 Carmarthen Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
Planning history at 23 Carmarthen Avenue is exclusively tree-management applications — typical for a property with mature trees on or near the plot.
- Aug 2024Tree WorksTreesIn report
Within Tree Preservation Order 218, (T9) Purple leafed Plum (Prunus cerasifera) - reduce crown over hanging the footpath to 2.4m; reduce crown height and width to the previous pruning points
- Agent
- ArbroTree Surgeons Ltd
- Documents
- 2 docs on file
- Reference
- 24/00757/TPO
- Jan 2022Tree WorksTreesIn report
Within Tree Preservation Order 218 - (T9) plum - prune to previous pruning points
- Agent
- Michael Reed & Co Tree Service Ltd
- Documents
- 10 docs on file
- Reference
- 21/01670/TPO
We flagged 2 things worth checking at 23 Carmarthen Avenue
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
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£652,000
Modelled from EPC, postcode comparables.
£563,000
Recorded with HM Land Registry.
Sales timeline
28 September 2021Most recent
£563,000
Median price across the last 5 sales in PO6 2AG: £628,000 (2024–2018).
Nearby sales in PO6 2AG
59 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG
Sold Nov 2024
£660,00015 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG
Sold Dec 2022
£628,00055 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG
Sold Jun 2019
£770,0001a, Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG
Sold Nov 2018
£465,00077 Carmarthen Avenue, Drayton, Portsmouth, PO6 2AG
Sold Nov 2018
£842,000
Everything we know about 23 Carmarthen Avenue, 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 Carmarthen Avenue homes
Price per m² for 23 Carmarthen Avenue runs comfortably ahead of the street norm.
Price per m²
£4,080
Street avg £3,206
Floor Area
138 m²
Street avg 178 m²
Habitable Rooms
6 rooms
Street avg 7 rooms
CO₂ Emissions
6.4 t/year
Street avg 7.5 t/year
Similar properties nearby
1 Carmarthen Avenue, Drayton
PO6 2AG
1 Brecon Avenue
PO6 2AN
1 Bernard Avenue, Drayton
PO6 2JP
1 East Court, Cosham
PO6 2NX
1 Edison Spur, Drayton
PO6 2NW
1 Carshalton Avenue
PO6 2JT
1 Court Lane, Drayton
PO6 2LG
1 Court Mead, Drayton
PO6 2LT
The neighbourhood at a glance
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Court Lane — bus stop.
Closest school
0.6 km
Court Lane Infant Academy. 22 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
53.0dB

Night-time· 23:00 – 07:00
43.6dB