12 Aldam Street, Darlington, DL1 2HY
About 12 Aldam Street
12 Aldam Street is a mid-terrace house in Darlington (DL1 2HY). It has a recorded floor area of 84 m² (around 904 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (September 2015) shows an E (score 45), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since December 2013. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Poor to Average and hot-water efficiency went from Poor to Average; while roof efficiency dropped from Poor to Very Poor and lighting dropped from Average to Very Poor. The recommended improvements would lift it to C (score 76), a 2-band jump. The latest certificate is from September 2015, so improvements made since then won't be reflected.
Today's modelled estimate of £114,000 sits 188.6% above the 2020 sale of £39,500. On a £-per-square-foot basis, the last sale (£44/sq ft) was about 28.2% below the postcode norm. At 84 m² it's 20% larger than the typical home in the postcode (70 m² median across 29 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs). Last sale on file: £39,500 in September 2020.
Energy performance
12 Aldam Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 12 Sept 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Wall insulation improved
Low energy lighting percentage decreased
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
12 Aldam Street has no planning applications on record.
But the area is active
4 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.
£114,000
Modelled from EPC, postcode comparables.
£39,500
Recorded with HM Land Registry.
Sales timeline
24 September 2020Most recent
£39,500
Median price across the last 5 sales in DL1 2HY: £55,500 (2025–2023).
Nearby sales in DL1 2HY
Versus other Aldam Street homes
On epc rating, 12 Aldam Street runs well behind the street norm.
Price per m²
£470
Street avg £725
Floor Area
84 m²
Street avg 73 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
6.8 t/year
Street avg 3.5 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
8/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Morrisons — bus stop.
Closest school
0.3 km
Northwood Primary School. 32 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
53.6dB

Night-time· 23:00 – 07:00
42.2dB







