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17 Gwili Terrace, Mayhill, Swansea, SA1 6TW

Property type
Mid terrace
Habitable rooms
4
From EPC
Floor area
71 m²
764 sq ft
Energy rating
C
Score 73
Council tax
Band A
Tenure
Social Rental
Overview

About 17 Gwili Terrace

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

17 Gwili Terrace is a mid-terrace house in Mayhill, Swansea, Swansea (SA1 6TW). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 1950-1966 and council tax band A. The latest certificate (April 2025) shows a C (score 73). When first surveyed in June 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good, hot-water efficiency went from Poor to Good and main heating went from Average to Good; while roof efficiency dropped from Very Good to Average. The recommended improvements would push it to B (score 88).

Before you decide

Everything you need to know about 17 Gwili Terrace

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
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(1 of 2)
Apr 2025

EPC Rating

A
B
C
C73
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
2.1 t/year
Occupancy
Rented

Property Improvements

Changes detected from historical EPC data

Apr 2025from Jun 2009
EPC improved fromD55toC73
Heating Controls
Prog + StatFull

Heating controls upgraded for better temperature management

Hot Water
Main (No Stat)Main System

Hot water system upgraded

Walls
PoorGood

Wall insulation improved

Low Energy Lighting
75%100%

More low energy lighting installed

SDL Surveying

Get a survey for this property

Level 2 HomeBuyer Report

Mid 20th centuryMid-Terrace 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 £495 · Includes VAT

Planning

Planning history

Applications and permits filed against 17 Gwili Terrace, Mayhill, Swansea, SA1 6TW, sourced from the PlanIt planning register.

17 Gwili Terrace has no planning applications on record.

64

But the area is active

64 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.

17 Gwili Terrace has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.

Current estimate

£120,000

Modelled from EPC, postcode comparables.

See how we calculated this

No sales recorded with HM Land Registry

That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.

Median price across the last 5 sales in SA1 6TW: £120,000 (2025–2021).

On the street

Versus other Gwili Terrace homes

Four headline reads against 27 similar houses on this street, drawn from the latest EPC and Land Registry data.

On epc rating, 17 Gwili Terrace stands well clear of the street.

EPC Rating

73 (C)

Street avg 63 (D)

Strongly above

Floor Area

71 m²

Street avg 77 m²

Below

CO₂ Emissions

2.1 t/year

Street avg 3.5 t/year

Strongly above

Habitable Rooms

4 rooms

Street avg 4 rooms

Below
Before you decide

Everything you need to know about 17 Gwili Terrace

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.
£123k

1 Cadwaladr Circle, Mayhill

SA1 6UB

£116k

1 Branwen Gardens, Mayhill

SA1 6UP

£126k

1 Bryn Syfi Terrace

SA1 6XN

£127k

1 2, Flat 7, Brooklands Terrace

SA1 6BS

Flat
£130k

1 2, Flat 3, Brooklands Terrace

SA1 6BS

Flat
£130k

1 Caradog Place, Townhill

SA1 6NH

£131k

1 2, Flat 6, St James Crescent

SA1 6DZ

Flat
£133k

1 2, Flat 3, St James Crescent

SA1 6DZ

Flat
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

3/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Gors Avenue — 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 17 Gwili Terrace, Mayhill, Swansea, SA1 6TW. Each answer is also embedded as structured data for search engines.