3 Wellington Street, Tongwynlais, Cardiff, CF15 7LP
About 3 Wellington Street
3 Wellington Street is a three-bedroom semi-detached house in Tongwynlais, Cardiff, Cardiff (CF15 7LP). It has a recorded floor area of 97 m² (around 1044 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (November 2025) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in November 2018 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Average, hot-water efficiency went from Poor to Good and lighting went from Average to Very Good; while window efficiency dropped from Average to Poor. The recommended improvements would lift it to B (score 81), a 2-band jump. This certificate was lodged in the last six months, so the rating reflects current condition. Our model identifies extension potential, subject to local planning policy.
One planning record on file: an extension approved in 2024. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £353,000 is 41.2% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£239/sq ft) was about 21.4% above the typical sold price in the postcode. Most recent transfer: June 2020 at £250,000.
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Dining roomYes
Outside
- Private gardenRear
Building
- Extension potentialPossible
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Roof insulation improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
1 application on record at 3 Wellington Street, Tongwynlais, Cardiff, CF15 7LP
- Oct 2024ExtensionFullOutcome in report
Extension: Side and rear of property
New 2 Storey Side & Rear Extension with demolition of existing shed. Retrospective consent required for existing Garden Room.
Retrospective- Documents
- 9 docs on file
- Reference
- 24/00968/HSE
Unlock 3 Wellington Street, Tongwynlais, Cardiff, CF15 7LP's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 1 notable nearby
- The 9 documents, officer reports & conditions
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£353,000
Modelled from EPC, postcode comparables.
£250,000
Recorded with HM Land Registry.
Sales timeline
8 June 2020Most recent
£250,000
Median price across the last 5 sales in CF15 7LP: £342,500 (2025–2021).
Nearby sales in CF15 7LP
5a, Wellington Street, Tongwynlais, Cardiff, CF15 7LP
Sold May 2025
£465,0004 Wellington Street, Tongwynlais, Cardiff, CF15 7LP
Sold Sept 2024
£245,00015 Wellington Street, Tongwynlais, Cardiff, CF15 7LP
Sold Oct 2023
£480,00017 Wellington Street, Tongwynlais, Cardiff, CF15 7LP
Sold Jun 2021
£342,5002 Old School Court, Wellington Street, Tongwynlais, Cardiff, CF15 7LP
Sold Dec 2020
£265,000
Versus other Wellington Street homes
Habitable Rooms for 3 Wellington Street runs comfortably ahead of the street norm.
Price per m²
£2,577
Street avg £2,412
Floor Area
97 m²
Street avg 97 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
3.8 t/year
Street avg 4.2 t/year
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The neighbourhood at a glance
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Lewis Arms — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







