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

Estimated value

£205,000

  • Since the 2021 sale (£175,000)+17%
  • Against SA1 8HR's recent median (£120,000)+71%

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
Habitable rooms
4
From EPC
Floor area
74 m²
797 sq ft
Energy rating
D
Score 68
Council tax
Band C
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

£205,000

  • Against its 2021 sale (£175,000)+17%
  • Against SA1 8HR's recent median (£120,000)+71%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 18 St Illtyds Crescent is modelled from its 74 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

    74 m² from the EPC lodged in August 2015

  • Sales of this home

    2 sales recorded, the latest in 2021

  • 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.

18 St Illtyds Crescent has more than doubled in price since the earliest registered sale in 2015.

Sales timeline

  1. 26 November 2021Most recent

    £175,000

    +151.8%over 5 years

  2. 16 December 2015

    £69,500

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 18 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

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Overview

About 18 St Illtyds Crescent

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

18 St Illtyds Crescent is a semi-detached house in St. Thomas, Swansea, Swansea (SA1 8HR). It has a recorded floor area of 74 m² (around 797 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (August 2015) shows a D (score 68), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 84), a 2-band jump. The latest certificate is from August 2015, so improvements made since then won't be reflected.

Across 2015–2021, sale prices on this property compounded at 16.8% per year. Today's modelled estimate of £205,000 is 17.1% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£220/sq ft) was about 146.4% above the typical sold price in the postcode. Last sale on file: £175,000 in November 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Before you decide

Everything you need to know about 18 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

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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.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 04 Aug 2025

Current Certificate
Aug 2015

EPC Rating

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

Certificate validity

Expired on 4 August 2025

New assessment needed to sell or let
Planning

Planning history

Applications and permits filed against 18 St Illtyds Crescent, St Thomas, Swansea, SA1 8HR, sourced from the PlanIt planning register.

18 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.

Floor Area for 18 St Illtyds Crescent lags the street by a wide margin.

Price per m²

£2,365

Street avg £1,287

Strongly above

Floor Area

74 m²

Street avg 95 m²

Strongly below

Habitable Rooms

4 rooms

Street avg 5 rooms

Strongly below

CO₂ Emissions

2.5 t/year

Street avg 4.7 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 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 2 HomeBuyer Report

Early 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 £545 · 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.
£204k

1 Grafog Street, Port Tennant

SA1 8NG

£207k

1 Elmhurst Crescent, St Thomas

SA1 8EA

3 bed1 bath
£189k

1 Kinley Street, St Thomas

SA1 8HE

1 bed1 bath
£186k

1 Gelli Grafog, Port Tennant

SA1 8NZ

£181k

1 David Williams Terrace, Port Tennant

SA1 8NN

£174k

1 Danygraig Road, Port Tennant

SA1 8LY

1 bed
£174k

1 Kilvey Terrace, St Thomas

SA1 8BA

2 bed
£173k

1 Glenroy Avenue, St Thomas

SA1 8DU

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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 18 St Illtyds Crescent is modelled from its 74 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 18 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 18 St Illtyds Crescent was lodged in August 2015 at band D and expired in August 2025, 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. None is matched to 18 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
18 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 18 St Illtyds Crescent, St Thomas, Swansea, SA1 8HR. Each answer is also embedded as structured data for search engines.

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