Barnard Castle · DL12
EPC in DL12 (Barnard Castle)? We'll point you the right way.
Covering Barnard Castle, Bowes, Middleton-in-Teesdale, including Eden and Lyvennet Vale, Lower Teesdale, North Richmondshire. Find accredited domestic energy assessors nearby.
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DL12 (Barnard Castle) in a nutshell
DL12 covers Barnard Castle, Bowes, Middleton-in-Teesdale, in County Durham and North Yorkshire and Westmorland and Furness. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for DL12
Two councils in one district
DL12 is split between County Durham and North Yorkshire and Westmorland and Furness. Some councils run their own landlord licensing, so check which one your home is in.
Where's this from?
postcodes.io (ONSPD) local authorityGive your full postcode
DL12 stretches across Barnard Castle, Eden and Lyvennet Vale, Lower Teesdale and more, so give your full postcode, not just 'DL12', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsTerrace and semi country
Most homes here are terraces or semis. Insulation and heating upgrades are the usual way to nudge a rating up, so have receipts ready.
Where's this from?
ONS Census 2021, Barnard Castle: 30.8% terraced, 31.9% semi-detachedEngland landlord rules: quick version
- When you let: you need a valid EPC, usually good for 10 years.
- Minimum E: most private lets need E or better, unless exempt.
Always double-check on GOV.UK.
Next door to DL12
Frequently asked questions
Which areas does DL12 cover?
DL12 (Barnard Castle, Bowes, Middleton-in-Teesdale) includes the wards of Barnard Castle, Eden and Lyvennet Vale, Lower Teesdale, North Richmondshire, Upper Teesdale (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to DL12?
Neighbouring districts include DL13 (Stanhope), DL11 (Swaledale), DL14 (Bishop Auckland), NE44 (Riding Mill), DL15 (Crook) (ONS Postcode Directory via Doogal). A pro covering DL12 may well cover these too, so it's worth asking.
How many homes are in DL12?
About 5,434 households and 12,515 residents at the 2011 Census, across 726 active postcodes (Doogal / ONS Postcode Directory).
Which council area is DL12 in?
DL12 sits in County Durham, North Yorkshire, Westmorland and Furness (postcodes.io). Parliamentary constituency: Bishop Auckland, Richmond and Northallerton, Westmorland and Lonsdale.
📊 The numbers behind this page
- Postcode district
- DL12 1
- Areas covered
- Barnard Castle, Bowes, Middleton-in-Teesdale 2
- Active postcodes
- 726 3
- Households (2011 Census, via Doogal)
- 5,434 2
- Population (2011 Census, via Doogal)
- 12,515 2
- Electoral wards
- Barnard Castle, Eden and Lyvennet Vale, Lower Teesdale, North Richmondshire, Upper Teesdale 4
- Parliamentary constituencies
- Bishop Auckland, Richmond and Northallerton, Westmorland and Lonsdale 4
- Local authority
- County Durham, North Yorkshire, Westmorland and Furness 4
- Households privately renting (Barnard Castle built-up area)
- 16.1% 5
- ONS Postcode Directory
- Doogal
- Doogal / ONSPD
- postcodes.io
- ONS Census 2021
Made with open data. See where it all comes from. Updated 26 October 2026.