12a, Allergate, Durham, DH1 4ET
About 12a
12a is an end-of-terrace house in Durham (DH1 4ET). 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. The latest certificate (May 2020) shows a D (score 56), a step below the typical UK home. The rating has held steady at D across 2 certificates since February 2010. Between certificates, wall efficiency went from Very Poor to Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Average. At 40 m² this is the 12th smallest of 40 units on EPC record in the building, where floor areas span 25–212 m². The building's EPC ratings span E to B across 40 units on file.
At 40 m² it sits well below the postcode median (60 m² across 39 EPCs), making it one of the more compact homes locally. Across 2008–2021, sale prices on this property compounded at 2.7% per year. On a £-per-square-foot basis, the last sale (£297/sq ft) was about 74.4% above the typical sold price in the postcode. Most recent transfer: September 2021 at £128,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Everything you need to know about 12a
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system changed
Cavity wall insulation installed
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
12a has no planning applications on record.
But the area is active
53 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£126,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.7% per year over 14 years.
£128,000
Growth on file: 2.7% per year over 14 years.
Sales timeline
12 September 2021Most recent
£128,000
+43.8%over 9 years25 November 2011
£89,000
29 January 2008
£89,000
Median price across the last 5 sales in DH1 4ET: £440,000 (2025–2021).
Versus other Allergate homes
12a is notably below the street on epc rating.
Price per m²
£3,200
Street avg £3,142
Floor Area
40 m²
Street avg 51 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
3.2 t/year
Street avg 2.3 t/year
Everything you need to know about 12a
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Bus Station Stand J — bus station.
Closest school
0.6 km
St Margaret's Church of England Primary School. 17 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
51.3dB
Night-time· 23:00 – 07:00
41.9dB