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18 Llewellyn Circle, Mayhill, Swansea, SA1 6SN

Notable viewsExtendable1 planning record

Estimated value

£166,000

  • Since the 2023 sale (£130,000)+28%
  • Against SA1 6SN's recent median (£107,000)+55%

Newest record on this page: August 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
Bathrooms
2
Floor area
99 m²
1066 sq ft
Energy rating
D
Score 65
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

£166,000

  • Against its 2023 sale (£130,000)+28%
  • Against SA1 6SN's recent median (£107,000)+55%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 18 Llewellyn Circle is modelled from its 99 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in SA1 6SN. 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

    99 m² from the EPC lodged in February 2022

  • Sales of this home

    1 sale recorded, the latest in 2023

  • Recent sales in SA1 6SN

    5 sales, median £107,000 (2025–2019)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: August 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.

18 Llewellyn Circle valuation sits well clear of the typical sold price in this postcode.

Sales timeline

  1. 16 July 2023Most recent

    £130,000

Median price across the last 5 sales in SA1 6SN: £107,000 (2025–2019).

Risks

What this page doesn't show

1 potential issue has already been flagged for 18 Llewellyn Circle, Mayhill, Swansea, SA1 6SN. The detail, evidence and what to ask about it are in the Risks Report.
  • Signs of HMO activity in the areaIn 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 18 Llewellyn Circle

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

18 Llewellyn Circle is a three-bedroom semi-detached house in Mayhill, Swansea, Swansea (SA1 6SN). It has a recorded floor area of 99 m² (around 1066 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (February 2022) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 85), a 2-band jump. Other recorded features include notable views. Our model identifies extension potential, subject to local planning policy. The home occupies a corner plot.

At 99 m² it's 18.6% larger than the typical home in the postcode (84 m² median across 12 EPCs). Today's modelled estimate of £166,000 is 27.7% above the 2023 sale price. On a £-per-square-foot basis, the last sale (£122/sq ft) was about 35.4% above the typical sold price in the postcode. Sold July 2023 for £130,000. One historical planning record sits against the property in 2005.

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
  • Bathrooms2
  • CloakroomYes

Outside

  • Private gardenYes
  • Notable viewsYes
  • Corner plotYes

Building

  • Heating systemGas
  • RefurbishedYes
  • Extension potentialPossible
Before you decide

Everything you need to know about 18 Llewellyn Circle

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

Signs of HMO activity in the area

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.

Recommended upgrades on file would lift this property by multiple EPC bands.

Current Certificate
Feb 2022

EPC Rating

A
B
C
D
D65
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
3.8 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 22 February 2032

5 years remaining
Planning

Planning history

Applications and permits filed against 18 Llewellyn Circle, Mayhill, Swansea, SA1 6SN, sourced from the PlanIt planning register.

1 application on record at 18 Llewellyn Circle, Mayhill, Swansea, SA1 6SN

1decisions1extensions61nearby
  1. Nov 2005
    ExtensionOutline
    Outcome in report

    Extension: Rear of property

    Retention of single storey rear extension (application for a Certificate of Proposed Lawful Development)

    Reference
    2005/1868
    Full record in report

Unlock 18 Llewellyn Circle, Mayhill, Swansea, SA1 6SN'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 61 notable nearby
  • What the pattern means for extending or converting here
£14.99one-off · instant

One time fee only - money back guarantee

On the street

Versus other Llewellyn Circle homes

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

18 Llewellyn Circle is notably below the street on years held.

Price per m²

£1,313

Street avg £1,074

Above

Floor Area

99 m²

Street avg 97 m²

Strongly above

Habitable Rooms

5 rooms

Street avg 5 rooms

Above

CO₂ Emissions

3.8 t/year

Street avg 4.9 t/year

Below
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

Leakers Shops — bus stop.

Nearest stops

  • Leakers ShopsBus stop96m
  • Islwyn RoadBus stop101m
  • Leakers ShopsBus stop136m
  • Constitution HillBus stop194m

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

Victorian-eraSemi-Detached HouseEPC DPre-1919 build

Because the property was built before 1919, we believe a Level 3 building survey should be considered.

From £820 · 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.
£155k

1 Bryn Y Clochydd, Townhill

SA1 6AW

3 bed1 bath
£130k

1 Bryn Y Don Road

SA1 6YA

2 bed1 bath
£164k

1 2, Flat 1, St James Crescent

SA1 6DZ

Flat
£163k

1 2, Flat 1, Brooklands Terrace

SA1 6BS

Flat
£163k

1 Campbell Street

SA1 6XY

£154k

1 2, Flat 2, Brooklands Terrace

SA1 6BS

Flat
£147k

1 Cadrawd Road, Mayhill

SA1 6UG

£143k

1 2, Flat 4, Brooklands Terrace

SA1 6BS

Flat

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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 Llewellyn Circle is modelled from its 99 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in SA1 6SN. 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. 1 sale is recorded for 18 Llewellyn Circle. 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 Llewellyn Circle was lodged in February 2022 at band D and is valid until February 2032. 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 18 Llewellyn Circle. 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 6SN.
Council tax band
18 Llewellyn Circle 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 Llewellyn Circle, Mayhill, Swansea, SA1 6SN. Each answer is also embedded as structured data for search engines.

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