What type of property is 17 Clos Nant Mwlan, CF23 8NA?

17 Clos Nant Mwlan, CF23 8NA is a 4-bedroom detached house, which has been extended.

What was the last sold price for 17 Clos Nant Mwlan, CF23 8NA?

17 Clos Nant Mwlan, CF23 8NA last sold for £423,000 in March 2025, around 1 years ago. Land Registry has 4 sales on record going back to £79,995 in March 1997. Source: HM Land Registry.

Has 17 Clos Nant Mwlan, CF23 8NA appreciated in value?

Across 4 sales between March 1997 and March 2025, 17 Clos Nant Mwlan, CF23 8NA rose from £79,995 to £423,000, a change of £343,005. That works out to roughly +6.1% per year compounded over 28 years. Source: HM Land Registry.

How energy efficient is 17 Clos Nant Mwlan, CF23 8NA?

The current EPC rating for 17 Clos Nant Mwlan, CF23 8NA is C with a score of 75 out of 100, lodged in September 2024. It has improved from a D recorded in July 2010. The assessor estimates the property could reach a B. Source: EPC Register.

What is the floor area of 17 Clos Nant Mwlan, CF23 8NA?

17 Clos Nant Mwlan, CF23 8NA has a recorded floor area of 98 m² (1,055 sq ft), around 25 m² per bedroom. Source: EPC Register.

How is 17 Clos Nant Mwlan, CF23 8NA heated?

The latest EPC at 17 Clos Nant Mwlan, CF23 8NA records mains gas as the main heating fuel. Source: EPC Register.

What council tax band is 17 Clos Nant Mwlan, CF23 8NA?

17 Clos Nant Mwlan, CF23 8NA is in council tax band F. That sits towards the upper end of the band ladder, typically reflecting larger or higher-value homes.

Where is 17 Clos Nant Mwlan, CF23 8NA located?

17 Clos Nant Mwlan, CF23 8NA sits in Pontprennau, Cardiff, Cardiff. It falls within the CF23 postcode district.

Is 17 Clos Nant Mwlan, CF23 8NA in a safe area?

Police records around 17 Clos Nant Mwlan, CF23 8NA show an average of 169 reported crimes per month over the last 18 months. Violent crime makes up roughly 33% of reports, the most common category. The overall trend is falling (20% versus the prior period). Source: Police UK.

What transport links are near 17 Clos Nant Mwlan, CF23 8NA?

The closest bus stop to 17 Clos Nant Mwlan, CF23 8NA is Clos Cwm Du, 227m away. In total there are 30 bus stops within the surrounding area.

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17 Clos Nant Mwlan, Pontprennau, Cardiff, CF23 8NA

4 sales on record

Property type

Detached

Bedrooms

Bathrooms

Floor area

98 m²

1055 sq ft

Energy rating

Score 75

Council tax

Band F

Tenure

Owner Occupied

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Overview

About 17 Clos Nant Mwlan

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

17 Clos Nant Mwlan is a four-bedroom detached house in Pontprennau, Cardiff, Cardiff (CF23 8NA). It has a recorded floor area of 98 m² (around 1055 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (September 2024) shows a C (score 75), near the top of the C band. When first surveyed in July 2010 the rating was D, the property has climbed 1 band since. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Average to Good and lighting went from Poor to Very Good. The recommended improvements would push it to B (score 85). Records show the property has been extended at some point in its history.

A recent sale: £423,000 in March 2025. Its energy rating outperforms most of the postcode (better than 74% of similar EPCs). Across 1997–2025, sale prices on this property compounded at 6.1% per year. On a £-per-square-foot basis, the last sale (£401/sq ft) was about 113.5% above the typical sold price in the postcode.

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

Bedrooms4
Bathrooms2
Dining roomYes

Outside

Private gardenRear
DrivewayYes

Building

Previously extendedYes

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Energy

Energy performance

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

Current Certificate(1 of 2)

Sept 2024

EPC Rating

C75

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Good

CO2 Emissions

2.6 t/year

Occupancy

Owner Occupied

Certificate validity

Valid until 9 September 2034

7 years remaining

Property Improvements

Changes detected from historical EPC data

Sept 2024from Jul 2010

EPC improved fromD63toC75

Heating Controls

Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water

AverageGood

Hot water efficiency improved

Windows

AverageGood

Window efficiency improved

Low Energy Lighting

15%100%

More low energy lighting installed

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Late 20th centuryDetached HouseEPC C

We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.

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Planning

Planning history

Applications and permits filed against 17 Clos Nant Mwlan, Pontprennau, Cardiff, CF23 8NA, sourced from the PlanIt planning register.

17 Clos Nant Mwlan has no planning applications on record.

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.

Latest sale on 17 Clos Nant Mwlan was the highest on Land Registry record across the postcode.

Current estimate

£427,000

Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 28 years.

See how we calculated this

Last sold (2025)

£423,000

Growth on file: 6.1% per year over 28 years.

Sales timeline

21 March 2025Most recent
£423,000
+53.8%over 5 years
11 July 2019
£275,000
+5.8%over 3 years
29 June 2016
£260,000
+225.0%over 19 years
27 March 1997
£79,995

Median price across the last 5 sales in CF23 8NA: £345,000 (2025–2025).

Nearby sales in CF23 8NA

On the street

Versus other Clos Nant Mwlan homes

Four headline reads against 23 similar houses on this street, drawn from the latest EPC and Land Registry data.

17 Clos Nant Mwlan outperforms the street on price per m² by a wide margin.

Price per m²

£4,316

Street avg £2,705

Strongly above

Floor Area

98 m²

Street avg 99 m²

On par

Habitable Rooms

7 rooms

Street avg 6 rooms

Above

CO₂ Emissions

2.6 t/year

Street avg 3.9 t/year

Strongly above

Before you decide

Everything you need to know about 17 Clos Nant Mwlan

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

Pick your report · from £14.99

One time fee only - money back guarantee

The data behind every report

Comparables

Similar properties nearby

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

£417k

1 Clos Nant Y Cwm, Pontprennau

CF23 8LG

4 bed2 bath

£401k

1 Clos Nant Mwlan, Pontprennau

CF23 8NA

4 bed2 bath

£381k

1 Blackberry Way, Pontprennau

CF23 8FE

4 bed2 bath

£488k

1 Allt Y Wennol, Pontprennau

CF23 8AS

4 bed2 bath

£503k

1 Acorn Grove, Pontprennau

CF23 8NG

4 bed2 bath

£363k

1 Clos Dol Heulog, Pontprennau

CF23 8AT

3 bed

£327k

1 Amberwood Close, Pontprennau

CF23 8BZ

3 bed

£321k

1 Clos Alyn, Pontprennau

CF23 8LB

3 bed

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

169/mo

Falling year-on-year across the wider district.

Nearest stop

0.2 km

Clos Cwm Du — 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 17 Clos Nant Mwlan, Pontprennau, Cardiff, CF23 8NA. Each answer is also embedded as structured data for search engines.