21 Ashwood Grange, Thornley, Durham, DH6 3ET
About 21 Ashwood Grange
21 Ashwood Grange is a four-bedroom detached house in Thornley, Durham, Durham (DH6 3ET). It has a recorded floor area of 119 m² (around 1281 sq ft), construction records dating it to 1996-2002 and council tax band C. The latest certificate (January 2019) shows a C (score 74). The recommended improvements would push it to B (score 84). Records show the property has been extended at some point in its history. The home occupies a corner plot and a cul-de-sac position.
3 planning records sit against the property, 1 approved, 1 refused, 1 pending. Past consents include tree works, meaningful when judging how the property has evolved. An active application for an extension is awaiting a decision. At 119 m² it's 15.5% larger than the typical home in the postcode (103 m² median across 17 EPCs). 4 bedrooms is on the larger side for this postcode, where 2 is the typical count. Across 2003–2019, sale prices on this property compounded at 4.4% per year. Today's modelled estimate of £244,000 is 35.6% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£141/sq ft) was about 31.2% above the typical sold price in the postcode. Sold May 2019 for £180,000.
What this property has
Inside
- Bedrooms4
- Bathrooms2
- Dining roomYes
- EnsuiteYes
Outside
- Corner plotYes
- Cul-de-sacYes
Building
- Previously extendedYes
- RefurbishedYes
Energy performance
EPC Rating
Planning history
An application for a two-storey side extension is currently awaiting a decision.
- Jan 2026ExtensionFullIn report
Extension: Two storey · Side of property
Two storey side extension
- Agent
- Gordon Thornton Architectural Services
- Documents
- 9 docs on file
- Reference
- DM/26/00045/FPA
- Jul 2019Tree WorksTreesIn report
Proposed works to Ash tree consisting of Crown reduction of 2m, Crown lift to 4m, the reduction of one horizontal branch overhanging the road and the removal of dead and damaged branches (description amended)
- Documents
- 5 docs on file
- Reference
- DM/19/01843/TPO
We flagged 1 thing worth checking at 21 Ashwood Grange
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
21 Ashwood Grange has more than doubled in price since the earliest registered sale in 2003.
£244,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.4% per year over 16 years.
£180,000
Growth on file: 4.4% per year over 16 years.
Sales timeline
9 May 2019Most recent
£180,000
+100.0%over 16 years7 March 2003
£90,000
Median price across the last 5 sales in DH6 3ET: £185,500 (2025–2020).
Nearby sales in DH6 3ET
19 Ashwood Grange, Thornley, Durham, DH6 3ET
Sold Jan 2025
£185,50020 Ashwood Grange, Thornley, Durham, DH6 3ET
Sold May 2022
£252,50023 Ashwood Grange, Thornley, Durham, DH6 3ET
Sold Jul 2021
£175,0007 Ashwood Grange, Thornley, Durham, DH6 3ET
Sold Sept 2018
£135,0005 Ashwood Grange, Thornley, Durham, DH6 3ET
Sold Mar 2018
£150,000
Versus other Ashwood Grange homes
On epc rating, 21 Ashwood Grange stands well clear of the street.
Price per m²
£1,513
Street avg £1,273
Floor Area
119 m²
Street avg 104 m²
Habitable Rooms
7 rooms
Street avg 5 rooms
CO₂ Emissions
3.7 t/year
Street avg 4.8 t/year
Similar properties nearby
1 Ashwood Grange, Thornley
DH6 3ET
1 Co Operative Villas, Wheatley Hill
DH6 3NS
1 Burns Street, Wheatley Hill
DH6 3LA
1 Church Park, Wheatley Hill
DH6 3SJ
1 Church Street, Wheatley Hill
DH6 3PT
1 Bow Street East, Thornley
DH6 3AJ
1 Crossways Court, Thornley
DH6 3GZ
1 Cottingham Grove, Thornley
DH6 3EJ
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Post Office — bus stop.
Closest school
0.5 km
Thornley Academy. 6 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
47.6dB

Night-time· 23:00 – 07:00
38.9dB







