25a is a mid-terrace house in Killamarsh, Sheffield, Sheffield (S21 1AH). It has a recorded floor area of 53 m² (around 570 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (March 2023) shows an F (score 35), near the bottom of the EPC scale. When first surveyed in September 2011 the rating was G, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good, window efficiency went from Very Poor to Average and lighting went from Very Poor to Very Good. The recommended improvements would lift it to D (score 66), a 2-band jump. Main heating runs on electricity. At 53 m² this is the 16th smallest of 41 units on EPC record in the building, where floor areas span 29–159 m². The building's EPC ratings span F to C, with this unit at the bottom.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Sale prices here have lagged Sheffield HPI: -0.9% per year against 0% for the wider region. Today's modelled estimate of £118,000 sits 53.2% above the 2011 sale of £77,000. On a £-per-square-foot basis, the last sale (£135/sq ft) was about 15.6% below the postcode norm. On the market in November 2011 and unlisted since — roughly 15 years.
25a sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
No planning applications are recorded against 25a, Bridge Street, Killamarsh, Sheffield, S21 1AH. The full report also covers planning activity across the surrounding area.
Full planning data for 25a, Bridge Street, Killamarsh, Sheffield, S21 1AH
Every application and decision on this property and nearby, in full, in the report.
£118,000
Modelled from EPC, postcode comparables and a sale-price growth of -0.9% per year over 4 years.
£77,000
Growth on file: -0.9% per year over 4 years.
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EPC Rating for 25a lags the street by a wide margin.
Price per m²
£1,453
Street avg £2,143
Floor Area
53 m²
Street avg 58 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km

Daytime· 07:00 – 23:00
47.8dB

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Changes detected from historical EPC data
Windows upgraded, improving insulation
Roof insulation improved
More low energy lighting installed
3 November 2011Most recent
£77,000
-3.8%over 4 years26 October 2007
£80,000
Median price across the last 5 sales in S21 1AH: £150,000 (2025–2022).
Detailed EPC data
Full energy ratings, history and recommendations
Full planning history
Every application and decision on record
Comparable sales data
Plus transport, crime, schools and air quality
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CO₂ Emissions
4.3 t/year
Street avg 3.1 t/year
Bridge Street setting down — bus stop.
Closest school
0.5 km
St Giles CofE Primary School. 15 schools nearby.
Night-time· 23:00 – 07:00
38.3dB