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21 Heol Caerllion, Cwmrhydyceirw, Swansea, SA6 6SD

Extendable1 planning record
Property type
Semi-detached
Bedrooms
4
Bathroom
1
Floor area
91 m²
980 sq ft
Energy rating
C
Score 69
Council tax
Band D
Tenure
Owner Occupied
Overview

About 21 Heol Caerllion

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

21 Heol Caerllion is a four-bedroom semi-detached house in Cwmrhydyceirw, Swansea, Swansea (SA6 6SD). It has a recorded floor area of 91 m² (around 980 sq ft), construction records dating it to 1976-1982 and council tax band D. The latest certificate (August 2018) shows a C (score 69), just inside the C band. The recommended improvements would push it to B (score 88). Our model identifies extension potential, subject to local planning policy. The home occupies a cul-de-sac position.

Today's modelled estimate of £284,000 sits 65.1% above the 2018 sale of £172,000. On a £-per-square-foot basis, the last sale (£176/sq ft) was about 24.5% above the typical sold price in the postcode. One planning record on file: an extension approved in 2026. Past consents include an extension, meaningful when judging how the property has evolved. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs). Sold September 2018 for £172,000.

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

  • Bedrooms4
  • Bathrooms1
  • Open-plan layoutYes
  • Dining roomYes
  • EnsuiteYes

Outside

  • Private gardenRear
  • GarageIntegral
  • Cul-de-sacYes

Building

  • RefurbishedYes
  • Extension potentialPossible
Before you decide

Everything you need to know about 21 Heol Caerllion

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

Larger development activity nearby

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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.

EPC Rating

A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
3.2 t/year
Occupancy
Owner Occupied
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 Heol Caerllion, Cwmrhydyceirw, Swansea, SA6 6SD, sourced from the PlanIt planning register.

21 Heol Caerllion has an approved single-storey rear extension on the planning record.

1 application on record at 21 Heol Caerllion, Cwmrhydyceirw, Swansea, SA6 6SD

1decisions1extensions9documents5nearby
  1. Feb 2026
    ExtensionFull
    Outcome in report

    Extension: Single storey · Rear of property

    Proposed single storey rear extension and internal layout alterations.

    Documents
    9 docs on file
    Reference
    2026/0006/FUL
    Full record in report

Unlock 21 Heol Caerllion, Cwmrhydyceirw, Swansea, SA6 6SD'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 5 notable nearby
  • The 9 documents, officer reports & conditions
  • What the pattern means for extending or converting here
£14.99one-off · instant

One time fee only - money back guarantee

Price

Sales history & valuation

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

21 Heol Caerllion valuation sits well clear of the typical sold price in this postcode.

Current estimate

£284,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2018)

£172,000

Recorded with HM Land Registry.

Sales timeline

  1. 23 September 2018Most recent

    £172,000

Median price across the last 5 sales in SA6 6SD: £140,000 (2022–2017).

On the street

Versus other Heol Caerllion homes

Four headline reads against 14 similar houses on this street, drawn from the latest EPC and Land Registry data.

Price per m² for 21 Heol Caerllion runs comfortably ahead of the street norm.

Price per m²

£1,890

Street avg £1,696

Strongly above

Floor Area

91 m²

Street avg 89 m²

Above

Habitable Rooms

5 rooms

Street avg 5 rooms

On par

CO₂ Emissions

3.2 t/year

Street avg 3.6 t/year

On par
Before you decide

Everything you need to know about 21 Heol Caerllion

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

Larger development activity nearby

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.
£396k

1 Cae Eithin, Llangyfelach

SA6 6EZ

4 bed3 bath
£212k

1 Clos Crucywel, Cwmrhydyceirw

SA6 6RD

3 bed
£404k

1 Bishops Walk, Morriston

SA6 6EE

5 bed
£150k

1 Bryn Rhosyn, Llangyfelach

SA6 6DB

3 bed
£2.5k

1 Clos Ebol, Cwmrhydyceirw

SA6 6TP

4 bed
£201k

1 Clos Cenawon, Cwmrhydyceirw

SA6 6NE

2 bed1 bath
£188k

1 Can Yr Aderyn, Morriston

SA6 6AZ

2 bed1 bath
£280k

1 Cae Penpant, Llangyfelach

SA6 6BG

Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Swansea district page.
Full Swansea report

Crime

2/mo

Steady year-on-year across the wider district.

Nearest stop

0.3 km

Butterslade Grove — 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 Heol Caerllion, Cwmrhydyceirw, Swansea, SA6 6SD. Each answer is also embedded as structured data for search engines.