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10 Clos Derwen, Cardiff, CF23 5HJ

1 planning record

Estimated value

£685,000

  • Since the 2013 sale (£469,950)+46%
  • Against CF23 5HJ's recent median (£425,000)+61%

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

Learn about this valuation
Property type
Detached
Bedrooms
5
Bathrooms
4
Floor area
166 m²
1787 sq ft
Energy rating
C
Score 69
Council tax
Band G
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

£685,000

  • Against its 2013 sale (£469,950)+46%
  • Against CF23 5HJ's recent median (£425,000)+61%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 10 Clos Derwen is modelled from its 166 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF23 5HJ. 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

    166 m² from the EPC lodged in July 2013

  • Sales of this home

    2 sales recorded, the latest in 2013

  • Recent sales in CF23 5HJ

    5 sales, median £425,000 (2025–2021)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: May 2025Latest available records, read when you order
ValuationEstimate from the last refreshAnalysed against comparable sales
Planning1 applicationFull 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.

10 Clos Derwen has more than doubled in price since the earliest registered sale in 1999.

Sales timeline

  1. 20 December 2013Most recent

    £469,950

    +170.2%over 14 years

  2. 2 December 1999

    £173,950

Median price across the last 5 sales in CF23 5HJ: £425,000 (2025–2021).

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

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Overview

About 10 Clos Derwen

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

10 Clos Derwen is a five-bedroom detached house in Cardiff (CF23 5HJ). It has a recorded floor area of 166 m² (around 1787 sq ft), construction records dating it to 1996-2002 and council tax band G. The latest certificate (July 2013) shows a C (score 69), just inside the C band. The recommended improvements would push it to B (score 81). The latest certificate is from July 2013, so improvements made since then won't be reflected. Records show the property has been extended at some point in its history.

At 166 m² the property is well over the postcode median (114 m² across 23 EPCs), placing it in the larger end of the local stock. One planning record on file: an extension approved in 2018. Past consents include an extension, a garage conversion and a porch, meaningful when judging how the property has evolved. Across 1999–2013, sale prices on this property compounded at 7.3% per year. Today's modelled estimate of £685,000 is 45.8% above the 2013 sale price. On a £-per-square-foot basis, the last sale (£263/sq ft) was about 22.4% above the typical sold price in the postcode. Last sold in December 2013, so it's been off the market for around 13 years.

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

  • Bedrooms5
  • Bathrooms4
  • Dining roomYes
  • EnsuiteYes

Outside

  • GarageIntegral

Building

  • Previously extendedYes
  • RefurbishedYes
Before you decide

Everything you need to know about 10 Clos Derwen

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.

10 Clos Derwen's EPC is over a decade old — improvements since won't be reflected.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 23 Jul 2023

Current Certificate
Jul 2013

EPC Rating

A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
5.0 t/year
Occupancy
Owner Occupied

Certificate validity

Expired on 23 July 2023

New assessment needed to sell or let
Planning

Planning history

Applications and permits filed against 10 Clos Derwen, Cardiff, CF23 5HJ, sourced from the PlanIt planning register.

1 application on record at 10 Clos Derwen, Cardiff, CF23 5HJ

1decisions1extensions7documents1nearby
  1. May 2018
    Garage ConversionFull
    Outcome in report

    Extension: Single storey · Rear of property

    SINGLE STOREY EXTENSION TO REAR. FRONT PORCH. CONVERSION OF GARAGE TO STUDY. LOFT CONVERSION WORKS INCLUDE FORMING OF TWO GABLES-RAISING RIDGE LINE. ADDITION OF DORMER TO FRONT ELEVATION PLUS THREE DORMERS TO REAR ELEVATION.

    ExtensionPorch
    Documents
    7 docs on file
    Reference
    18/00396/DCH
    Full record in report

Unlock 10 Clos Derwen, Cardiff, CF23 5HJ's full planning history

You're seeing the shape of it. The report has the substance.

  • Every decision — granted, refused or withdrawn (1 on record)
  • All 1 application on this property in full, plus 1 notable nearby
  • The 7 documents, officer reports & conditions
  • What the pattern means for extending or converting here
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On the street

Versus other Clos Derwen homes

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

Floor Area for 10 Clos Derwen runs comfortably ahead of the street norm.

Price per m²

£2,831

Street avg £3,120

On par

Floor Area

166 m²

Street avg 114 m²

Strongly above

Habitable Rooms

8 rooms

Street avg 6 rooms

Strongly above

CO₂ Emissions

5.0 t/year

Street avg 3.5 t/year

Strongly below
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

Brandreth Rd — bus stop.

Nearest stops

  • Brandreth RdBus stop153m
  • Wasdale CloseBus stop200m
  • Dorchester CourtBus stop255m
  • Alder RoadBus stop261m

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

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.

From £895 · 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.
£567k

1 Boverton Street

CF23 5ES

5 bed
£669k

1 Bronwydd Close

CF23 5RA

4 bed2 bath
£666k

1 Beatty Avenue

CF23 5QR

4 bed1 bath
£620k

1 Clos Edno

CF23 5NF

4 bed2 bath
£619k

1 Clos Derwen

CF23 5HJ

4 bed2 bath
£770k

1 Balaclava Road

CF23 5BB

4 bed3 bath
£550k

1 Crystal Avenue

CF23 5QJ

4 bed1 bath
£470k

1 Clos Tecwyn

CF23 5ND

4 bed2 bath

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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 10 Clos Derwen is modelled from its 166 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in CF23 5HJ. 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 10 Clos Derwen. 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 10 Clos Derwen was lodged in July 2013 at band C and expired in July 2023, so a new one is needed to sell or let. Floor area, heating and insulation details on this page come from it.
Planning records
Planning applications are collected from local authority registers through PlanIt. 1 application is matched to 10 Clos Derwen. 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 5HJ.
Council tax band
10 Clos Derwen is in council tax band G. 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 10 Clos Derwen, Cardiff, CF23 5HJ. Each answer is also embedded as structured data for search engines.

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