21 Essex Terrace, Plasmarl, Swansea, SA6 8LY
About 21 Essex Terrace
21 Essex Terrace is a mid-terrace house in Plasmarl, Swansea, Swansea (SA6 8LY). It has a recorded floor area of 75 m² (around 807 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (October 2024) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since October 2014. Between certificates, lighting went from Poor to Very Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to B (score 89).
Across 2001–2019, sale prices on this property compounded at 5.7% per year. Today's modelled estimate of £121,000 sits 64.6% above the 2019 sale of £73,500. On a £-per-square-foot basis, the last sale (£91/sq ft) was about 32.6% above the typical sold price in the postcode. Its energy rating outperforms most of the postcode (better than 83% of similar EPCs). Most recent transfer: March 2019 at £73,500.
Energy performance
EPC Rating
Certificate validity
Valid until 16 October 2034
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
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
21 Essex Terrace has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
21 Essex Terrace has more than doubled in price since the earliest registered sale in 2001.
£121,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.7% per year over 17 years.
£73,500
Growth on file: 5.7% per year over 17 years.
Sales timeline
29 March 2019Most recent
£73,500
+162.5%over 17 years16 November 2001
£28,000
Median price across the last 5 sales in SA6 8LY: £95,000 (2025–2021).
Nearby sales in SA6 8LY
12 Essex Terrace, Plasmarl, Swansea, SA6 8LY
Sold Apr 2025
£95,00019 Essex Terrace, Plasmarl, Swansea, SA6 8LY
Sold Sept 2024
£127,00013 Essex Terrace, Plasmarl, Swansea, SA6 8LY
Sold Mar 2023
£106,00028 Essex Terrace, Plasmarl, Swansea, SA6 8LY
Sold Oct 2021
£42,4459 Essex Terrace, Plasmarl, Swansea, SA6 8LY
Sold Apr 2021
£85,000
Versus other Essex Terrace homes
On epc rating, 21 Essex Terrace stands well clear of the street.
Price per m²
£980
Street avg £924
Floor Area
75 m²
Street avg 88 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
1.9 t/year
Street avg 4.0 t/year
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The neighbourhood at a glance
Crime
210/mo
Falling year-on-year across the wider district.
Nearest stop
0.2 km
Parc Llewellyn — bus stop.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







