9 Marine Street, Cwm, Ebbw Vale, NP23 7SS
About 9 Marine Street
9 Marine Street is a mid-terrace house in Cwm, Ebbw Vale, Ebbw Vale (NP23 7SS). It has a recorded floor area of 42 m² (around 452 sq ft), construction records dating it to 1900-1929 and council tax band A. At 42 m² this is the smallest unit on EPC record across the building (42–109 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (August 2021) shows a C (score 78), near the top of the C band. The rating has held steady at C across 4 certificates since November 2010. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Average to Good and lighting went from Very Poor to Very Good.
Untraded for 20 years, with the last transfer in October 2006. Across 2004–2006, sale prices on this property compounded at 14.7% per year. Today's modelled estimate of £116,000 sits 188.6% above the 2006 sale of £40,200. On a £-per-square-foot basis, the last sale (£89/sq ft) was about 34.9% above the typical sold price in the postcode. At 42 m² it sits well below the postcode median (81 m² across 22 EPCs), making it one of the more compact homes locally.
Know exactly what you're buying at 9 Marine Street
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
9 Marine Street's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Wall insulation improved
More low energy lighting installed
Heating controls upgraded for better temperature management
Planning history
9 Marine Street has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
9 Marine Street's modelled value sits at over four times its earliest registered sale price (2004).
£116,000
Modelled from EPC, postcode comparables and a sale-price growth of 14.7% per year over 2 years.
£40,200
Growth on file: 14.7% per year over 2 years.
Sales timeline
30 October 2006Most recent
£40,200
+38.6%over 2 years10 June 2004
£29,000
Median price across the last 5 sales in NP23 7SS: £121,000 (2025–2023).
Nearby sales in NP23 7SS
21 Marine Street, Cwm, Ebbw Vale, NP23 7SS
Sold Jul 2025
£130,00055 Marine Street, Cwm, Ebbw Vale, NP23 7SS
Sold Nov 2023
£120,00051 Marine Street, Cwm, Ebbw Vale, NP23 7SS
Sold Oct 2023
£127,50029 Marine Street, Cwm, Ebbw Vale, NP23 7SS
Sold Oct 2023
£78,0007 Marine Street, Cwm, Ebbw Vale, NP23 7SS
Sold Aug 2023
£121,000
Everything we know about 9 Marine Street, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Marine Street homes
On years held, 9 Marine Street stands well clear of the street.
Price per m²
£957
Street avg £1,100
Floor Area
42 m²
Street avg 61 m²
Habitable Rooms
2 rooms
Street avg 5 rooms
CO₂ Emissions
1.2 t/year
Street avg 2.9 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Cwm Institute — bus stop.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.