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21 Cilonnen Road, Three Crosses, Swansea, SA4 3PH

Property type
Detached
Bedrooms
3
Bathroom
1
Floor area
160 m²
1722 sq ft
Energy rating
E
Score 54
Council tax
Band F
Tenure
Owner Occupied
Overview

About 21 Cilonnen Road

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

21 Cilonnen Road is a three-bedroom detached house in Three Crosses, Swansea, Swansea (SA4 3PH). It has a recorded floor area of 160 m² (around 1722 sq ft), construction records dating it to 1950-1966 and council tax band F. The latest certificate (May 2023) shows an E (score 54), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 71), a 2-band jump.

A recent sale: £350,000 in May 2025. At 160 m² it's 23.6% larger than the typical home in the postcode (130 m² median across 16 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). Today's modelled estimate of £408,000 is 16.6% above the 2025 sale price.

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
Before you decide

Everything you need to know about 21 Cilonnen Road

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

Signs of HMO activity in the areaLarger development activity nearby

Pick your report · every report is £14.99

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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.

21 Cilonnen Road's carbon output runs well above what efficient homes in the postcode produce.

EPC Rating

A
B
C
D
E
E54
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
7.2 t/year
Occupancy
Owner Occupied
SDL Surveying

Get a survey for this property

Level 3 Building Survey

Mid 20th centuryDetached HouseEPC EExtended multiple times (2+ extensions)

Because the property has been extended more than once, we believe a Level 3 building survey should be considered.

From £1,020 · Includes VAT

Planning

Planning history

Applications and permits filed against 21 Cilonnen Road, Three Crosses, Swansea, SA4 3PH, sourced from the PlanIt planning register.

21 Cilonnen Road has no planning applications on record.

5

But the area is active

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

Price

Sales history & valuation

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

21 Cilonnen Road valuation sits well clear of the typical sold price in this postcode.

Current estimate

£408,000

Modelled from EPC, postcode comparables.

See how we calculated this
Last sold (2025)

£350,000

Recorded with HM Land Registry.

Sales timeline

  1. 26 May 2025Most recent

    £350,000

Median price across the last 5 sales in SA4 3PH: £395,000 (2025–2024).

On the street

Versus other Cilonnen Road homes

Four headline reads against 16 similar houses on this street, drawn from the latest EPC and Land Registry data.

Habitable Rooms for 21 Cilonnen Road runs comfortably ahead of the street norm.

Price per m²

£2,188

Street avg £2,761

Below

Floor Area

160 m²

Street avg 146 m²

Above

Habitable Rooms

8 rooms

Street avg 6 rooms

Strongly above

CO₂ Emissions

7.2 t/year

Street avg 5.9 t/year

Strongly below
Before you decide

Everything you need to know about 21 Cilonnen Road

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

Signs of HMO activity in the areaLarger 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.
£295k

1 Banc Bach, Penclawdd

SA4 3FJ

3 bed
£210k

1 Bridge House, Banc Bach, Penclawdd

SA4 3FL

3 bed2 bath
£227k

1 Benson Terrace, Penclawdd

SA4 3GA

2 bed
£439k

1 Anchor Court, Penclawdd

SA4 3GX

£329k

1 Cae Mansel Road, Gowerton

SA4 3HH

£309k

1 Blaencedi, Penclawdd

SA4 3LU

£574k

1 Baytree Court, Gowerton

SA4 3AD

£271k

1 Abercedi, Penclawdd

SA4 3XB

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

0.1 km

Pant Y Dwr — 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 Cilonnen Road, Three Crosses, Swansea, SA4 3PH. Each answer is also embedded as structured data for search engines.