12 Harcourt Street, Darlington, DL3 6RB
About 12 Harcourt Street
12 Harcourt Street is a mid-terrace house in Darlington (DL3 6RB). It has a recorded floor area of 59 m² (around 635 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (October 2021) shows an E (score 45), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since September 2008. Between certificates, roof efficiency went from Poor to Very Good, window efficiency went from Very Poor to Average and hot-water efficiency went from Very Poor to Poor; while wall efficiency dropped from Average to Very Poor and lighting dropped from Very Good to Good. The recommended improvements would lift it to B (score 90), a 3-band jump. Main heating runs on electricity.
At 59 m² it's 19.7% smaller than the typical home in the postcode (74 m² median across 32 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 81% of similar EPCs).
Everything you need to know about 12 Harcourt Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Single glazing replaced with double or better glazing
Loft insulation upgraded to recommended levels
Heating system changed
Heating controls upgraded for better temperature management
Hot water efficiency 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 Harcourt Street has no planning applications on record.
But the area is active
19 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
12 Harcourt Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£117,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in DL3 6RB: £77,000 (2025–2024).
Nearby sales in DL3 6RB
Versus other Harcourt Street homes
12 Harcourt Street is notably below the street on epc rating.
EPC Rating
45 (E)
Street avg 61 (D)
Floor Area
59 m²
Street avg 75 m²
CO₂ Emissions
4.9 t/year
Street avg 4.0 t/year
Habitable Rooms
4 rooms
Street avg 4 rooms
Everything you need to know about 12 Harcourt Street
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
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Fairfield Street — bus stop.
Closest school
0.5 km
Corporation Road Community Primary School. 33 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
55.2dB
Night-time· 23:00 – 07:00
43.2dB