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23 Cae Lewis, Tongwynlais, Cardiff, CF15 7LQ

Property type
Semi-detached
Floor 00
Bedroom
1
Floor area
30 m²
323 sq ft
Energy rating
C
Score 70
Council tax
Band B
Tenure
Owner Occupied
Overview

About 23 Cae Lewis

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

23 Cae Lewis is a one-bedroom semi-detached house in Tongwynlais, Cardiff, Cardiff (CF15 7LQ). It has a recorded floor area of 30 m² (around 323 sq ft), construction records dating it to 1950-1966 and council tax band B. At 30 m² this is the smallest unit on EPC record across the building (30–136 m²). The building's EPC ratings span F to C, with this unit at the top. The latest certificate (September 2025) shows a C (score 70). When first surveyed in March 2009 the rating was F, the property has climbed 3 bands since. Between certificates, wall efficiency went from Poor to Good, window efficiency went from Average to Good and lighting went from Average to Good. Main heating runs on electricity.

Untraded for 22 years, with the last transfer in August 2004. Today's modelled estimate of £123,000 sits 64% above the 2004 sale of £75,000. At 30 m² it sits well below the postcode median (62 m² across 14 EPCs), making it one of the more compact homes locally.

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

  • Bedrooms1
Before you decide

Everything you need to know about 23 Cae Lewis

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

Pick your report · every report is £14.99

One time fee only - money back guarantee

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 Cae Lewis's carbon output is low for the local stock.

Current Certificate(1 of 3)
Sept 2025

EPC Rating

A
B
C
C70
D
E
F
G
Main Heating
Electric
Main Fuel
Electric
Hot Water
Very Poor
Windows
Good
CO2 Emissions
0.5 t/year
Occupancy
Owner Occupied

Property Improvements

Changes detected from historical EPC data

Aug 2020from Mar 2009
EPC improved fromF23toE50
Hot Water
Very PoorPoor

Hot water efficiency improved

Low Energy Lighting
33%100%

More low energy lighting installed

Sept 2025from Aug 2020
EPC improved fromE50toC70
Heating System
Room HeatersStorage Heaters

Heating system upgraded to a more efficient system

Hot Water
Immersion (Off-Peak)Instantaneous

Hot water system changed

Windows
Full DoubleHigh Performance

High performance glazing installed

Wall Insulation
UninsulatedInsulated Cavity

Cavity wall insulation installed

Floor Insulation
UninsulatedInsulated

Floor insulation added or improved

SDL Surveying

Get a survey for this property

Level 3 Building Survey

Mid 20th centuryGround Floor FlatEPC CNo mains gas

Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.

From £820 · Includes VAT

Planning

Planning history

Applications and permits filed against 23 Cae Lewis, Tongwynlais, Cardiff, CF15 7LQ, sourced from the PlanIt planning register.

23 Cae Lewis has no planning applications on record.

1

But the area is active

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

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
Current estimate

£123,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2004)

£75,000

Recorded with HM Land Registry.

Sales timeline

  1. 4 August 2004Most recent

    £75,000

Median price across the last 5 sales in CF15 7LQ: £237,500 (2024–2018).

On the street

Versus other Cae Lewis homes

Four headline reads against 4 similar flats on this street, drawn from the latest EPC and Land Registry data.

On epc rating, 23 Cae Lewis runs well behind the street norm.

EPC Rating

70 (C)

Street avg 73 (C)

Strongly below

Floor Area

30 m²

Street avg 36 m²

Strongly below

CO₂ Emissions

0.5 t/year

Street avg 1.4 t/year

Strongly above

Habitable Rooms

3 rooms

Street avg 2 rooms

Strongly above
Before you decide

Everything you need to know about 23 Cae Lewis

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

Pick your report · every report is £14.99

One time fee only - money back guarantee

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
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.

Crime

2/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Iron Bridge — bus stop.

Go deeper on the local area

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

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 23 Cae Lewis, Tongwynlais, Cardiff, CF15 7LQ. Each answer is also embedded as structured data for search engines.