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

Property type
Semi-detached
Bedrooms
2
Floor area
56 m²
603 sq ft
Energy rating
C
Score 74
Council tax
Band C
Tenure
Private Rental
Overview

About 20 Duncan Close

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

20 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 1996-2002 and council tax band C. The latest certificate (January 2024) shows a C (score 74). When first surveyed in March 2013 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor 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 89).

Untraded for 21 years, with the last transfer in April 2005. Across 2000–2005, sale prices on this property compounded at 19.9% per year. Today's modelled estimate of £191,000 sits 70.5% above the 2005 sale of £112,000. 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

Outside

  • Private gardenRear
  • ParkingAllocated

Building

  • RefurbishedYes
Before you decide

Everything you need to know about 20 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)
Jan 2024

EPC Rating

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

Property Improvements

Changes detected from historical EPC data

Jan 2024from Mar 2013
EPC improved fromD59toC74
Heating Controls
Prog + StatThermostat

Heating controls changed

Hot Water
AverageGood

Hot water efficiency improved

Roof Insulation
PartialWell Insulated

Loft insulation upgraded to recommended levels

Floor Insulation
UninsulatedPartial

Floor insulation added or improved

Low Energy Lighting
12%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 £495 · Includes VAT

Planning

Planning history

Applications and permits filed against 20 Duncan Close, St Mellons, Cardiff, CF3 1NP, sourced from the PlanIt planning register.

20 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.

Sale price has at least doubled since 2000.

Current estimate

£191,000

Modelled from EPC, postcode comparables and a sale-price growth of 19.9% per year over 5 years.

See how we calculated this
Last sold (2005)

£112,000

Growth on file: 19.9% per year over 5 years.

Sales timeline

  1. 19 April 2005Most recent

    £112,000

    +148.9%over 5 years
  2. 13 April 2000

    £45,000

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.

On price per m², 20 Duncan Close runs well behind the street norm.

Price per m²

£2,000

Street avg £2,876

Strongly below

Floor Area

56 m²

Street avg 66 m²

Strongly below

Habitable Rooms

4 rooms

Street avg 4 rooms

On par

CO₂ Emissions

1.7 t/year

Street avg 2.2 t/year

Strongly above
Before you decide

Everything you need to know about 20 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
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.

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 20 Duncan Close, St Mellons, Cardiff, CF3 1NP. Each answer is also embedded as structured data for search engines.