18 Allergate, Durham, DH1 4ET
About 18 Allergate
18 Allergate is a mid-terrace house in Durham (DH1 4ET). It has a recorded floor area of 109 m² (around 1173 sq ft), construction records dating it to 1900-1929 and council tax band C. The latest certificate (September 2022) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since January 2009. Between certificates, window efficiency went from Poor to Average; while wall efficiency dropped from Good to Average.
At 109 m² the property is well over the postcode median (60 m² across 41 EPCs), placing it in the larger end of the local stock. It changed hands recently, sold October 2025 for £220,000. One planning record on file: an extension approved in 2002. Past consents include an extension, meaningful when judging how the property has evolved. Across 2016–2025, sale prices on this property compounded at 1% per year. Today's modelled estimate of £266,000 is 20.9% above the 2025 sale price.
Everything you need to know about 18 Allergate
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Certificate validity
Valid until 24 September 2032
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
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 £885 · Includes VAT
Planning history
Council records include a two-storey rear extension at 18 Allergate.
1 application on record at 18 Allergate, Durham, DH1 4ET
- Jan 2002ExtensionFullOutcome in report
Extension: Two storey · Rear of property
Erection of two storey pitched roof extension to rear of existing dwelling
- Reference
- 4/01/00921/FPA
Unlock 18 Allergate, Durham, DH1 4ET's full planning history
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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 50 notable nearby
- What the pattern means for extending or converting here
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Sales history & valuation
18 Allergate saw 3 transfers in just over a decade — high turnover for the postcode.
£266,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.0% per year over 9 years.
£220,000
Growth on file: 1.0% per year over 9 years.
Sales timeline
2 October 2025Most recent
£220,000
-21.4%over 2 years4 April 2023
£280,000
+40.0%over 6 years30 June 2016
£200,000
Median price across the last 5 sales in DH1 4ET: £325,000 (2026–2021).
Versus other Allergate homes
18 Allergate is notably below the street on price per m².
Price per m²
£2,018
Street avg £4,222
Floor Area
109 m²
Street avg 48 m²
Habitable Rooms
3 rooms
Street avg 2 rooms
CO₂ Emissions
4.3 t/year
Street avg 2.2 t/year
Everything you need to know about 18 Allergate
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Crime
509/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