12a, Cock Road, Bristol, BS15 9SJ
About 12a
12a is a semi-detached house in Bristol (BS15 9SJ). It has a recorded floor area of 40 m² (around 431 sq ft), construction records dating it to 1900-1929 and council tax band A. At 40 m² this is the smallest unit on EPC record across the building (40–300 m²). The building's EPC ratings span F to B across 23 units on file. The latest certificate (November 2021) shows a D (score 61), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since August 2009. Between certificates, lighting went from Average to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 73).
Across 1996–2024, sale prices on this property compounded at 1.4% per year. Today's modelled estimate of £187,000 sits 183.3% above the 2024 sale of £66,000. On a £-per-square-foot basis, the last sale (£153/sq ft) was about 38.1% below the postcode norm. At 40 m² it sits well below the postcode median (107 m² across 22 EPCs), making it one of the more compact homes locally. Most recent transfer: October 2024 at £66,000.
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
More low energy lighting installed
Planning history
12a has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
Sales history & valuation
12a's modelled value sits at over four times its earliest registered sale price (1996).
£187,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.4% per year over 28 years.
£66,000
Growth on file: 1.4% per year over 28 years.
Sales timeline
24 October 2024Most recent
£66,000
+46.7%over 28 years18 June 1996
£45,000
Median price across the last 5 sales in BS15 9SJ: £286,000 (2025–2024).
Similar properties nearby
The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Hollyguest Road — bus stop.
Closest school
0.5 km
Courtney Primary School. 31 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
50.2dB

Night-time· 23:00 – 07:00
39.5dB







