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23 Carmarthen Street, Cardiff, CF5 1QG

Estimated value

£185,000

  • Since the 2008 sale (£119,000)+55%
  • Against CF5 1QG's recent median (£255,000)-27%

Newest record on this page: December 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
End terrace
Floor Ground
Bedrooms
2
Floor area
58 m²
624 sq ft
Energy rating
C
Score 69
Council tax
Band C
Tenure
Private Rental
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£185,000

  • Against its 2008 sale (£119,000)+55%
  • Against CF5 1QG's recent median (£255,000)-27%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 23 Carmarthen Street is modelled from its 58 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF5 1QG. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    58 m² from the EPC lodged in April 2017

  • Sales of this home

    2 sales recorded, the latest in 2008

  • Recent sales in CF5 1QG

    5 sales, median £255,000 (2025–2019)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: December 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

The latest sale landed at the peak of the pre-credit-crunch market — a high-water reference point.

Sales timeline

  1. 20 March 2008Most recent

    £119,000

    -23.2%over 3 years

  2. 22 December 2004

    £155,000

Median price across the last 5 sales in CF5 1QG: £255,000 (2025–2019).

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 23 Carmarthen Street

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

23 Carmarthen Street is a two-bedroom end-of-terrace house in Cardiff (CF5 1QG). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to 1900-1929 and council tax band C. At 58 m² this is the 4th smallest of 16 units on EPC record in the building, where floor areas span 38–96 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (April 2017) shows a C (score 69), just inside the C band.

Untraded for 18 years, with the last transfer in March 2008. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 58 m² it's 22.7% smaller than the typical home in the postcode (75 m² median across 15 EPCs). On energy efficiency it sits in the top 10% of properties in this postcode. Across 2004–2008, sale prices on this property compounded at -7.8% per year. Today's modelled estimate of £185,000 sits 55.5% above the 2008 sale of £119,000.

Specifications

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

  • Bedrooms2

Outside

  • Private gardenYes

Building

  • RefurbishedYes
Before you decide

Everything you need to know about 23 Carmarthen Street

The true value, the hidden risks and the full sale history, in one report.

Pick your report · from £14.99

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Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

23 Carmarthen Street ranks among the most efficient homes in the postcode for energy use.

Current Certificate
Apr 2017

EPC Rating

A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.3 t/year
Occupancy
Rented

Certificate validity

Valid until 24 April 2027

5 months remaining
Planning

Planning history

Applications and permits filed against 23 Carmarthen Street, Cardiff, CF5 1QG, sourced from the PlanIt planning register.

23 Carmarthen Street has no planning applications on record.

2

But the area is active

2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

On the street

Versus other Carmarthen Street homes

Four headline reads against 3 similar flats on this street, drawn from the latest EPC and Land Registry data.

EPC Rating for 23 Carmarthen Street runs comfortably ahead of the street norm.

EPC Rating

69 (C)

Street avg 59 (D)

Strongly above

Floor Area

58 m²

Street avg 42 m²

Strongly above

CO₂ Emissions

2.3 t/year

Street avg 3.6 t/year

Strongly above

Habitable Rooms

3 rooms

Street avg 2 rooms

Strongly above
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Cardiff district page.
Full Cardiff report

Crime

426/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Carmarthen Street — bus stop.

Nearest stops

  • Carmarthen StreetBus stop137m
  • Glynne StreetBus stop164m
  • Suffolk HouseBus stop207m
  • Radnor CourtBus stop225m

Most reported crime locally

  • Violence & Sexual Offences2,365 reports35%
  • Anti-social Behaviour878 reports13%
  • Public Order758 reports11%
  • Shoplifting679 reports10%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

SDL Surveying

Get a survey for this property

Level 3 Building Survey

Victorian-eraGround 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

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£266k

1 Aubrey Avenue

CF5 1AQ

2 bed
£242k

1 Dulwich Gardens

CF5 1SE

3 bed
£315k

1 Aldsworth Road

CF5 1AA

3 bed1 bath
£316k

1 Bassett Street

CF5 1PP

3 bed1 bath
£328k

1 Conybeare Road

CF5 1GB

3 bed1 bath
£348k

1 Egerton Street

CF5 1RF

3 bed2 bath
£350k

1 Earle Place

CF5 1NZ

1 bed1 bath
£359k

1 Egerton Mews, Egerton Street

CF5 1RF

3 bed2 bath

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 23 Carmarthen Street is modelled from its 58 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF5 1QG. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 2 sales are recorded for 23 Carmarthen Street. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 23 Carmarthen Street was lodged in April 2017 at band C and is valid until April 2027. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 23 Carmarthen Street. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 16 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from CF5 1QG.
Council tax band
23 Carmarthen Street is in council tax band C. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 23 Carmarthen Street, Cardiff, CF5 1QG. Each answer is also embedded as structured data for search engines.

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