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40 Gelli Street, Port Tennant, Swansea, SA1 8NJ

Estimated value

£134,000

  • Since the 2024 sale (£104,950)+28%
  • Against SA1 8NJ's recent median (£127,000)+6%

Newest record on this page: May 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.

Learn about this valuation
Property type
Mid terrace
Habitable rooms
4
From EPC
Floor area
76 m²
818 sq ft
Energy rating
C
Score 69
Council tax
Band B
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

£134,000

  • Against its 2024 sale (£104,950)+28%
  • Against SA1 8NJ's recent median (£127,000)+6%

Your note and figure are shown publicly on this page.

How the estimate is made

The estimate for 40 Gelli Street is modelled from its 76 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA1 8NJ. 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

    76 m² from the EPC lodged in April 2024

  • Sales of this home

    2 sales recorded, the latest in 2024

  • Recent sales in SA1 8NJ

    5 sales, median £127,000 (2026–2024)

This page or the full report?

DataThis pageFull report
SalesLatest sale shown: May 2026Latest 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.

Sale price has grown by over 3x since 1999.

Sales timeline

  1. 8 August 2024Most recent

    £104,950

    +288.7%over 25 years

  2. 17 June 1999

    £27,000

Median price across the last 5 sales in SA1 8NJ: £127,000 (2026–2024).

Risks

What this page doesn't show

2 potential issues have already been flagged for 40 Gelli Street, Port Tennant, Swansea, SA1 8NJ. 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 40 Gelli Street

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

40 Gelli Street is a mid-terrace house in Port Tennant, Swansea, Swansea (SA1 8NJ). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (April 2024) shows a C (score 69), just inside the C band. The recommended improvements would push it to B (score 86).

Its energy rating outperforms most of the postcode (better than 76% of similar EPCs). Across 1999–2024, sale prices on this property compounded at 5.5% per year. Today's modelled estimate of £134,000 is 27.7% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£128/sq ft) was about 28.4% above the typical sold price in the postcode. Last sale on file: £104,950 in August 2024.

Before you decide

Everything you need to know about 40 Gelli Street

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.
Current Certificate
Apr 2024

EPC Rating

A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.7 t/year
Occupancy
Owner Occupied

Certificate validity

Valid until 29 April 2034

7 years remaining
Planning

Planning history

Applications and permits filed against 40 Gelli Street, Port Tennant, Swansea, SA1 8NJ, sourced from the PlanIt planning register.

40 Gelli Street 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 Gelli Street homes

Four headline reads against 31 similar houses on this street, drawn from the latest EPC and Land Registry data.

40 Gelli Street is notably below the street on floor area.

Price per m²

£1,381

Street avg £1,178

Above

Floor Area

76 m²

Street avg 86 m²

Below

Habitable Rooms

4 rooms

Street avg 4 rooms

On par

CO₂ Emissions

2.7 t/year

Street avg 3.4 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 Stephens Church — bus stop.

Nearest stops

  • St Stephens ChurchBus stop93m
  • Fabian Way Park & RideBus stop158m
  • Danygraig CemeteryBus stop195m
  • Hoo StreetBus stop233m

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-eraMid-Terrace HouseEPC CPre-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.
£133k

1 George Powell House, Balaclava Street, St Thomas

SA1 8BR

£133k

1 Grenfell Park Road, St Thomas

SA1 8EY

£136k

1 Bay Street, Port Tennant

SA1 8LB

£125k

1 Canaan Row, St Thomas

SA1 8EQ

£124k

1 Ivy Bush Court, St Thomas

SA1 8DQ

£147k

1 Balaclava Street, St Thomas

SA1 8BS

4 bed1 bath
£121k

1 Dupre Road, St Thomas

SA1 8HB

£152k

1 Bay View, St Thomas

SA1 8BB

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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 40 Gelli Street is modelled from its 76 m² EPC floor area, its 2 recorded sales and recent sales of comparable homes in SA1 8NJ. 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 40 Gelli Street. 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 40 Gelli Street was lodged in April 2024 at band C and is valid until April 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 40 Gelli Street. 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 8NJ.
Council tax band
40 Gelli Street is in council tax band B. 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 40 Gelli Street, Port Tennant, Swansea, SA1 8NJ. Each answer is also embedded as structured data for search engines.

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