Skip to content
UK Property Looker

21 St Illtyds Crescent, St Thomas, Swansea, SA1 8HR

Notable views

Estimated value

£217,000

  • Since the 2024 sale (£205,000)+6%
  • Against SA1 8HR's recent median (£120,000)+81%

Newest record on this page: September 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
C
Score 70
Council tax
Band C
Tenure
Owner Occupied
Get directions (opens in a new tab)
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

£217,000

  • Against its 2024 sale (£205,000)+6%
  • Against SA1 8HR's recent median (£120,000)+81%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 21 St Illtyds Crescent is modelled from its 79 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA1 8HR. 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 May 2024

  • Sales of this home

    2 sales recorded, the latest in 2024

  • Recent sales in SA1 8HR

    5 sales, median £120,000 (2025–2020)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: September 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 St Illtyds Crescent valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 26 September 2024Most recent

    £205,000

    +66.7%over 19 years

  2. 7 August 2005

    £123,000

Median price across the last 5 sales in SA1 8HR: £120,000 (2025–2020).

Risks

What this page doesn't show

2 potential issues have already been flagged for 21 St Illtyds Crescent, St Thomas, Swansea, SA1 8HR. The detail, evidence and what to ask about it are in the Risks Report.
  • Signs of HMO activity in the areaIn report
  • Larger development activity nearbyIn 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 St Illtyds Crescent

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

21 St Illtyds Crescent is a three-bedroom semi-detached house in St. Thomas, Swansea, Swansea (SA1 8HR). It has a recorded floor area of 79 m² (around 850 sq ft), construction records dating it to 1950-1966 and council tax band C. Other recorded features include notable views, a conservatory and outbuildings. The latest certificate (May 2024) shows a C (score 70). The recommended improvements would push it to B (score 84).

Its energy rating outperforms most of the postcode (better than 83% of similar EPCs). Across 2005–2024, sale prices on this property compounded at 2.7% per year. On a £-per-square-foot basis, the last sale (£241/sq ft) was about 187.4% above the typical sold price in the postcode. Sold September 2024 for £205,000.

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

  • Bedrooms3
  • Bathrooms1
  • Dining roomYes
  • ConservatoryYes

Outside

  • Private gardenRear
  • OutbuildingsYes
  • Notable viewsYes
Before you decide

Everything you need to know about 21 St Illtyds Crescent

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 · from £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
May 2024

EPC Rating

A
B
C
C70
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.6 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 23 May 2034

7 years remaining
Planning

Planning history

Applications and permits filed against 21 St Illtyds Crescent, St Thomas, Swansea, SA1 8HR, sourced from the PlanIt planning register.

21 St Illtyds Crescent has no planning applications on record.

47

But the area is active

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

On the street

Versus other St Illtyds Crescent homes

Four headline reads against 12 similar houses on this street, drawn from the latest EPC and Land Registry data.

Price per m² for 21 St Illtyds Crescent runs comfortably ahead of the street norm.

Price per m²

£2,595

Street avg £1,264

Strongly above

Floor Area

79 m²

Street avg 95 m²

Below

Habitable Rooms

5 rooms

Street avg 5 rooms

Above

CO₂ Emissions

2.6 t/year

Street avg 4.7 t/year

Above
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

580/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

St Illtyd's Crescent — bus stop.

Nearest stops

  • St Illtyd's CrescentBus stop110m
  • St Illtyd's CrescentBus stop122m
  • Reginald StreetBus stop129m
  • St Illtyd's CrescentBus stop146m

Most reported crime locally

  • Violence & Sexual Offences3,276 reports35%
  • Anti-social Behaviour1,210 reports13%
  • Shoplifting1,135 reports12%
  • Public Order981 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 3 Building Survey

Mid 20th centurySemi-Detached HouseEPC CExtended multiple times (2+ extensions)Permanent outbuildings

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

From £885 · 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.
£207k

1 Elmhurst Crescent, St Thomas

SA1 8EA

3 bed1 bath
£174k

1 Kilvey Terrace, St Thomas

SA1 8BA

2 bed
£147k

1 Balaclava Street, St Thomas

SA1 8BS

4 bed1 bath
£189k

1 Kinley Street, St Thomas

SA1 8HE

1 bed1 bath
£174k

1 Danygraig Road, Port Tennant

SA1 8LY

1 bed
£204k

1 Grafog Street, Port Tennant

SA1 8NG

£186k

1 Gelli Grafog, Port Tennant

SA1 8NZ

£181k

1 David Williams Terrace, Port Tennant

SA1 8NN

Property research, connected

Get up to date data on unlimited properties per month

Explore sale histories, valuations, energy ratings and local areas. Ask the assistant to connect the details and take your research further.

Start your research
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 St Illtyds Crescent is modelled from its 79 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA1 8HR. 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 St Illtyds Crescent. 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 St Illtyds Crescent was lodged in May 2024 at band C and is valid until May 2034. 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 St Illtyds Crescent. 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 16 months, which places each incident at an approximate point. Schools and stops are measured in a straight line from SA1 8HR.
Council tax band
21 St Illtyds Crescent is in council tax band C. 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 St Illtyds Crescent, St Thomas, Swansea, SA1 8HR. Each answer is also embedded as structured data for search engines.

Know this home? Think our valuation is wrong?

Leave a note for other visitors about work done or anything the records miss, and say what you think it's worth. It takes about two minutes.

Keep exploring