Property profile

10 Duncan CloseSt. Mellons

CF3 1NP

Pontprennau and Old St Mellons

Area profile →

Map showing 10 Duncan Close, St. Mellons, Cardiff

Property Price
150k200k250k300k400k500k750k1.5M

Estimated sale price

£270,000

Semi-Detached sold in Pontprennau and Old St Mellons

The box shows the middle 50% of semi-detached sale prices, the whiskers show the 5th to 95th percentile, and the marker shows this property's estimated price.

Half of similar homes sold within the box; most sold within the wider line.

An indicative model estimate, not a survey or formal valuation.

This property vs market

Last sold31 Jul 2025
£265,000Change since last sale: +£7,000 (+2.8%)
Annualised change
+2.4% per yearCardiff annualised change (semi-detached) since 2025: +3.4% per yearThis property's value grew slower than the market
Price per sq ftLocal median £372 per sq ft
£367 per sq ftEstimate vs local median: −£5 per sq ft (−1.3%)
Local sold pricesMedian for semi-detached in Pontprennau and Old St Mellons
£285,000Estimate vs local median: −£13,000 (−4.4%)
How this estimate is calculated

Area360's automated valuation uses available property details, recorded sales and local market data to estimate a sale price. This automated estimate is a guide, not a survey, mortgage valuation or formal valuation. See the valuation methodology and limitations.

Estimate calculated .

Property facts

Property typeHouse / Semi-Detached
TenureFreehold
Construction period1983-1990
Floor area69 m² / 743 sq ft
Rooms4 habitable / 4 heated
EPC ratingC
EPC inspection18 Jun 2024

Sales history

DatePriceChange
31 Jul 2025£265,000+52%
15 Feb 2019£174,000+195%
01 Sept 1997£59,000-

Local market

Property prices in Pontprennau and Old St Mellons

Median price: £290,000
Price per sq ft: £346
Sales (last 12 months): 177
Typical range (middle 50%): £242K – £358K

Based on 177 recent sales, the median property price is £290,000 (about £346 per square foot) in Pontprennau and Old St Mellons area, with individual transactions ranging from £30,000 up to £1,340,000.

Prices by property typelast 12 months

Median sale price, median price per square foot, sales count, and percentile information for each property type in Pontprennau and Old St Mellons over the last year.
TypeSalesMedian£/sq ft
Detached60£406,750£349
Semi-Detached57£285,000£372
Terraced44£242,500£343
Flats16£170,000£287

10-year price trendmedian sale price in Pontprennau and Old St Mellons

Sale price

Ten year median sale price trend for each property type in Pontprennau and Old St Mellons.
YearDetachedFlatsSemi-DetachedTerraced
2016£284,995£125,000£181,750£187,998
2017£305,000£130,000£224,995£182,750
2018£320,000£120,000£224,995£179,995
2019£309,498£127,498£219,995£184,995
2020£330,000£137,995£224,995£193,998
2021£336,000£137,000£239,995£220,000
2022£379,973£163,418£271,000£234,998
2023£363,000£165,000£280,000£244,995
2024£370,000£165,000£285,000£250,000
2025£415,000£175,000£285,500£248,498
2026£395,010£167,000£285,000£242,000
Ten year median sale price trend for each property type in Pontprennau and Old St Mellons.

Price per sq ft

Ten year median sale price per square foot trend for each property type in Pontprennau and Old St Mellons.
YearDetachedFlatsSemi-DetachedTerraced
2016£255£199£249£277
2017£271£198£238£283
2018£261£213£263£282
2019£272£223£281£280
2020£270£239£239£288
2021£292£236£299£302
2022£341£294£336£363
2023£344£283£350£353
2024£347£244£334£350
2025£347£287£357£342
2026£358£287£368£352
Ten year median sale price per square foot trend for each property type in Pontprennau and Old St Mellons.

Price distribution by property typelast 12 months

Price distribution by property type for Pontprennau and Old St Mellons in the last year.

Recent sales

There were 50+ recent sold properties in the last 18 months near CF3 1NP.

Recent sold properties in the last 18 months near CF3 1NP
DateAddressTypeTenurePriceMap
10 Jul 20262, Duncan Close, Cardiff, CF3 1NPSemi-DetachedFreehold£240,000
24 Oct 20251, Duncan Close, Cardiff, CF3 1NPSemi-DetachedFreehold£240,000
29 Aug 20252, Duncan Close, Cardiff, CF3 1NPSemi-DetachedFreehold£250,000
26 Aug 202523, Duncan Close, Cardiff, CF3 1NPSemi-DetachedFreehold£245,000
31 Jul 202510, Duncan Close, Cardiff, CF3 1NPSemi-DetachedFreehold£265,000

Other properties at this postcode

AddressTenureFloor areaLast sale
1 Duncan Close, St. Mellons, CardiffFreehold70 m²£240,000 (2025)
2, Duncan Close, St. Mellons, CardiffFreehold69 m²£240,000 (2026)
3, Duncan Close, St. Mellons, CardiffFreehold57 m²£188,000 (2024)
4, Duncan Close, St. Mellons, CardiffFreehold59 m²£165,000 (2019)
5, Duncan Close, St. Mellons, CardiffFreehold69 m²£170,000 (2017)
6 Duncan Close, St. Mellons, CardiffFreehold75 m²£160,000 (2016)
8, Duncan Close, St. Mellons, CardiffFreehold71 m²£179,000 (2019)
11 Duncan Close, St. Mellons, CardiffFreehold55 m²£210,000 (2022)
12 Duncan Close, St. Mellons, CardiffFreehold57 m²£130,000 (2014)
17 Duncan Close, St. Mellons, CardiffFreehold66 m²£133,000 (2016)

Area insights for CF3 1NP

Full area profile →

Overview

Postcode CF3 1NP is located in an urban city, within the Pontprennau and Old St Mellons area of Cardiff in the Wales region, and forms part of the Trowbridge area. It has very high deprivation and high crime levels, with around 71 crimes per 1,000 residents per year, about 17% below the Wales average of 86 per 1,000. The average income per household in Trowbridge is £38,599 per year. The median sale price in Pontprennau and Old St Mellons is £290,000 (around £346 per square foot), with typical sale prices between £242,000 and £358,000. The nearest station is Heath High Level, about 2.9 miles away. There are no primary and no secondary schools in the area. There are 2 parks nearby, the closest medium park is ABC Park.

Crime rate
7/10
Crimes per 1k residents
71
Deprivation level
9/10
Income level
2/10
Social housing
24.8%
Connectivity
N/A
Flood Risk
N/A
Noise Level
No noise

Deprivation level

9/10

Trowbridge has a very high level of deprivation, ranked at position 304 out of 32,844 areas in England, placing it within the top 1% most deprived areas in Wales.

Crime level

7/10

Trowbridge has a high crime rate, with approximately 71 reported incidents per 1,000 population each year.

Social housing

24.8%

Approximately 24.8% of homes on this street are social housing provided by a local council or housing association. Across the surrounding area, around 39.5% of dwellings are socially rented.

Income level

2/10

The average income per household in Trowbridge is £38,599 per year.

Noise Level

No noise

No significant noise sources from railways or roads near CF3 1NP.

Transport

The nearest station is Heath High Level located about 2.9 miles away. There are no other stations nearby.

Parks

Nearby parks and green spaces for CF3 1NP
DistanceNameSizeDirections
0.1 miABC ParkMediumWalking directions to ABC Park
0.3 miOrchard ParkSmallWalking directions to Orchard Park

Area Profile

Population
323
Population density
2,535.2 per km²

Crime

Crime per 1,000 population

Violence and sexual offences
37.41(+10%)
Anti-social behaviour
17.76(+37%)
Criminal damage and arson
9.51(+30%)
Public order
5.07(-38%)
Vehicle crime
4.44(+55%)
Wales average

Demographics

Ethnic groups

British
301
93.19%
Other White
8
2.48%
Indian
3
0.93%
Other Mixed or Multiple ethnic groups
3
0.93%
Other Asian
2
0.62%
Total population: 323

Economics

Education (age 16+)

No qualifications
99
34.86%
Level 4+ (Degree)
66
23.24%
Level 2 (GCSEs 9-4)
40
14.08%
Level 1 (GCSEs 3-1)
31
10.92%
Level 3 (A level)
24
8.45%
Total 16+ residents: 284

Housing

Housing tenure

Owns with a mortgage
48
34.04%
Owns outright
38
26.95%
Social rents from council
27
19.15%
Private landlord or letting agency
17
12.06%
Other social rented
8
5.67%
Total households: 141

Schools

In the CF3 1NP postcode area, located within Trowbridge, there are 0 primary and 0 secondary schools in close proximity.

Nearby primary and secondary schools for CF3 1NP
DistancePhaseNameTypeRating
0.2 miNot applicableSt Mellons C.I.W. Primary SchoolWelsh establishment

N/A

0.2 miNot applicablePen-Y-Bryn Primary SchoolWelsh establishment

N/A

0.2 miNot applicableSt Illtyds R.C. High SchoolWelsh establishment

N/A

Local amenities

5 nearby supermarkets & convenience stores within 0.5 mi of CF3 1NP

Nearby supermarkets & convenience stores for CF3 1NP
DistanceNameAddressDirections
0.2 miTesco ExpressCountisbury Avenue, Cardiff, CF3 5NQWalking directions to Tesco Express
0.3 miHeron Foods40-46 Countisbury Avenue, Cardiff, CF3 5SLWalking directions to Heron Foods
0.3 miMini Mart StoreCountisbury Avenue, Cardiff, CF3 5SLWalking directions to Mini Mart Store
0.3 miIceland4-6 Countisbury Avenue, Cardiff, CF3 5SJWalking directions to Iceland
0.3 miSparAbergele Road, Cardiff, CF3 1TNWalking directions to Spar