17 Grenfell Town, Bonymaen, Swansea, SA1 7AE
About 17 Grenfell Town
17 Grenfell Town is a mid-terrace house in Bonymaen, Swansea, Swansea (SA1 7AE). It has a recorded floor area of 71 m² (around 764 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (November 2024) shows a C (score 72). When first surveyed in November 2010 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Average to Good and window efficiency went from Average to Good. The recommended improvements would push it to B (score 89).
On energy efficiency it sits in the top 10% of properties in this postcode. Across 2004–2023, sale prices on this property compounded at 1.2% per year. Today's modelled estimate of £131,000 sits 74.7% above the 2023 sale of £75,000. Sold November 2023 for £75,000. Across the public record there are 4 sales, relatively high churn for a single property.
Energy performance
17 Grenfell Town ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Roof insulation improved
Heating controls upgraded for better temperature management
Window efficiency improved
Wall insulation improved
Loft insulation upgraded to recommended levels
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
17 Grenfell Town has no planning applications on record.
But the area is active
3 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
17 Grenfell Town's sale-price growth has lagged the wider UK trajectory across its history on file.
£131,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.2% per year over 20 years.
£75,000
Growth on file: 1.2% per year over 20 years.
Sales timeline
17 November 2023Most recent
£75,000
+3.4%over 1 year7 January 2022
£72,500
-16.2%over 14 years9 November 2007
£86,500
+44.2%over 3 years17 May 2004
£60,000
Median price across the last 5 sales in SA1 7AE: £87,000 (2025–2020).
Nearby sales in SA1 7AE
9 Grenfell Town, Bonymaen, Swansea, SA1 7AE
Sold Jul 2025
£130,00019 Grenfell Town, Bonymaen, Swansea, SA1 7AE
Sold Oct 2024
£90,00026 Grenfell Town, Bonymaen, Swansea, SA1 7AE
Sold Aug 2024
£86,0002 Grenfell Town, Bonymaen, Swansea, SA1 7AE
Sold Feb 2022
£87,0001 Grenfell Town, Bonymaen, Swansea, SA1 7AE
Sold Oct 2020
£58,000
Versus other Grenfell Town homes
EPC Rating for 17 Grenfell Town runs comfortably ahead of the street norm.
Price per m²
£1,056
Street avg £1,205
Floor Area
71 m²
Street avg 69 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.3 t/year
Street avg 3.5 t/year
Similar properties nearby
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The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Pentrechwyth Road — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







