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21 Grafton Close, Penylan, Cardiff, CF23 9JA

Estimated value

£314,000

  • Since the 2025 sale (£250,000)+26%
  • Against CF23 9JA's recent median (£270,000)+16%

Newest record on this page: August 2025. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Semi-detached
Bedrooms
3
Bathroom
1
Floor area
79 m²
850 sq ft
Energy rating
D
Score 68
Council tax
Band E
Tenure
Owner Occupied
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Valuation

About this valuation

How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.

Our estimate

£314,000

  • Against its 2025 sale (£250,000)+26%
  • Against CF23 9JA's recent median (£270,000)+16%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 21 Grafton Close is modelled from its 79 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF23 9JA. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.

What it's based on

  • Floor area

    79 m² from the EPC lodged in August 2019

  • Sales of this home

    2 sales recorded, the latest in 2025

  • Recent sales in CF23 9JA

    5 sales, median £270,000 (2024–2017)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: August 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
PlanningNone on this homeFull history, plus nearby schemes
Flood riskNot shownIncluded
Price

Sales history & valuation

Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.

21 Grafton Close valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 19 August 2025Most recent

    £250,000

    +15.2%over 5 years

  2. 15 January 2020

    £217,000

Median price across the last 5 sales in CF23 9JA: £270,000 (2024–2017).

Risks

What this page doesn't show

Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.
  • Flood risk from rivers, sea and surface waterIn report
  • Subsidence and ground-stability signalsIn report
  • Refusals, enforcement and big schemes nearbyIn report

One time fee only - money back guarantee

Overview

About 21 Grafton Close

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

21 Grafton Close is a three-bedroom semi-detached house in Penylan, Cardiff, Cardiff (CF23 9JA). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (August 2019) shows a D (score 68), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 82), a 2-band jump.

Most recent transfer was August 2025 at £250,000 — fresh data. Across 2020–2025, sale prices on this property compounded at 2.6% per year. Today's modelled estimate of £314,000 is 25.6% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£294/sq ft) was about 71.8% above the typical sold price in the postcode. At 79 m² it's 15.1% smaller than the typical home in the postcode (93 m² median across 11 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

  • Bedrooms3
  • Bathrooms1
  • Open-plan layoutYes
  • Dining roomYes
  • StudyYes

Outside

  • Private gardenYes
  • GarageYes

Building

  • Central heatingYes
Before you decide

Everything you need to know about 21 Grafton Close

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

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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.

Recommended upgrades on file would lift this property by multiple EPC bands.

Current Certificate
Aug 2019

EPC Rating

A
B
C
D
D68
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.7 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 7 August 2029

2 years remaining
Planning

Planning history

Applications and permits filed against 21 Grafton Close, Penylan, Cardiff, CF23 9JA, sourced from the PlanIt planning register.

21 Grafton Close has no planning applications on record.

2

But the area is active

2 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

On the street

Versus other Grafton Close homes

Four headline reads against 10 similar houses on this street, drawn from the latest EPC and Land Registry data.

21 Grafton Close is notably below the street on years held.

Price per m²

£3,165

Street avg £2,887

On par

Floor Area

79 m²

Street avg 91 m²

Below

Habitable Rooms

5 rooms

Street avg 5 rooms

On par

CO₂ Emissions

2.7 t/year

Street avg 3.9 t/year

Strongly above
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

0.1 km

Grafton Close — bus stop.

Nearest stops

  • Grafton CloseBus stop73m
  • Lothian CresBus stop182m
  • Lonsdale RoadBus stop220m
  • Ysgol Bro EdernBus stop239m

Most reported crime locally

  • Violence & Sexual Offences995 reports33%
  • Anti-social Behaviour345 reports11%
  • Public Order344 reports11%
  • Shoplifting340 reports11%

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Mid 20th centurySemi-Detached HouseEPC D

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 £595 · Includes VAT

Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£337k

1 Kingwood Close, Penylan

CF23 9HE

3 bed1 bath
£350k

1 Firstbrook Close

CF23 9ER

3 bed2 bath
£417k

1 Hugon Close

CF23 9BY

3 bed1 bath
£198k

1 Bryn Y Nant, Llanedeyrn

CF23 9NZ

3 bed
£442k

1 Earl S Court Road, Penylan

CF23 9DD

4 bed
£311k

1 Ffordd Nowell, Penylan

CF23 9FA

£339k

1 Doe Close, Penylan

CF23 9HJ

£280k

1 Grafton Close, Penylan

CF23 9JA

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Method

How to read this page

Where every figure above comes from, how current it is and what it can't tell you.
Valuation method in detail
How the estimate is made
The estimate for 21 Grafton Close is modelled from its 79 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF23 9JA. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
Where sold prices come from
Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 2 sales are recorded for 21 Grafton Close. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
Reading the EPC
Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 21 Grafton Close was lodged in August 2019 at band D and is valid until August 2029. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. None is matched to 21 Grafton Close. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
Area figures
Crime is police-recorded street-level data over the last 18 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from CF23 9JA.
Council tax band
21 Grafton Close is in council tax band E. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 21 Grafton Close, Penylan, Cardiff, CF23 9JA. Each answer is also embedded as structured data for search engines.

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