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21 Duncan Close, St Mellons, Cardiff, CF3 1NP

6 sales on record
Property type
Semi-detached
Bedrooms
2
Bathroom
1
Floor area
56 m²
603 sq ft
Energy rating
C
Score 74
Council tax
Band C
Tenure
Owner Occupied
Overview

About 21 Duncan Close

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

21 Duncan Close is a two-bedroom semi-detached house in St. Mellons, Cardiff, Cardiff (CF3 1NP). It has a recorded floor area of 56 m² (around 603 sq ft), construction records dating it to 1983-1990 and council tax band C. The latest certificate (December 2020) shows a C (score 74). The rating has held steady at C across 2 certificates since August 2010. Between certificates, lighting went from Poor to Very Good. The recommended improvements would push it to B (score 90).

Most recent transfer: April 2021 at £166,000. Across the public record there are 6 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 2002–2021, sale prices on this property compounded at 5.1% per year. Today's modelled estimate of £205,000 is 23.5% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£275/sq ft) was about 42.5% above the typical sold price in the postcode. At 56 m² it's 17.6% smaller than the typical home in the postcode (68 m² median across 17 EPCs).

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
  • Bathrooms1

Outside

  • ParkingAllocated
Before you decide

Everything you need to know about 21 Duncan Close

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.
Current Certificate(1 of 2)
Dec 2020

EPC Rating

A
B
C
C74
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
1.8 t/year
Occupancy
Owner Occupied

Property Improvements

Changes detected from historical EPC data

Dec 2020from Aug 2010
Heating Controls
Prog + StatFull

Heating controls upgraded for better temperature management

Low Energy Lighting
17%100%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Late 20th centurySemi-Detached 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.

From £545 · Includes VAT

Planning

Planning history

Applications and permits filed against 21 Duncan Close, St Mellons, Cardiff, CF3 1NP, sourced from the PlanIt planning register.

21 Duncan Close has no planning applications on record.

A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.

Price

Sales history & valuation

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

21 Duncan Close has more than doubled in price since the earliest registered sale in 2002.

Current estimate

£205,000

Modelled from EPC, postcode comparables and a sale-price growth of 5.1% per year over 19 years.

See how we calculated this
Last sold (2021)

£166,000

Growth on file: 5.1% per year over 19 years.

Sales timeline

  1. 7 April 2021Most recent

    £166,000

    +22.1%over 5 years

  2. 9 July 2015

    £136,000

    +8.8%over 1 year

  3. 22 January 2014

    £124,950

  4. 21 June 2007

    £124,950

    +36.6%over 2 years

  5. 22 February 2005

    £91,500

    +40.9%over 2 years

  6. 11 July 2002

    £64,950

Median price across the last 5 sales in CF3 1NP: £245,000 (2025–2024).

On the street

Versus other Duncan Close homes

Four headline reads against 17 similar houses on this street, drawn from the latest EPC and Land Registry data.

Floor Area for 21 Duncan Close lags the street by a wide margin.

Price per m²

£2,964

Street avg £2,816

Above

Floor Area

56 m²

Street avg 66 m²

Strongly below

Habitable Rooms

3 rooms

Street avg 4 rooms

Strongly below

CO₂ Emissions

1.8 t/year

Street avg 2.2 t/year

Above
Before you decide

Everything you need to know about 21 Duncan Close

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
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£207k

1 Canopus Close, St Mellons

CF3 1NR

2 bed1 bath
£194k

1 Abergele Road, Rumney

CF3 1RR

3 bed1 bath
£217k

1 Dovey Close, Rumney

CF3 1RJ

3 bed
£231k

1 Meadvale Court, Meadvale Road

CF3 1UG

3 bed2 bath
£239k

1 Duncan Close, St Mellons

CF3 1NP

3 bed1 bath
£239k

1 Llanina Grove, Rumney

CF3 1SW

4 bed
£205k

1 Harris Avenue, Rumney

CF3 1QA

£206k

1 Gwbert Close, Rumney

CF3 1QY

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

Reported crime in the wider district is trending notably upward year-on-year.

Crime

3/mo

Rising year-on-year across the wider district.

Nearest stop

0.1 km

Ty Coch Court — 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 21 Duncan Close, St Mellons, Cardiff, CF3 1NP. Each answer is also embedded as structured data for search engines.