Barnard Castle · DL12

Plumbing compliance check 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 plumbers 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

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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 authority
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Give 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) wards
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Older terraces, older pipes

Barnard Castle has lots of terraced homes. In older ones, ask the plumber to look at shared supply pipes and any old tanks in the loft.

Where's this from?ONS Census 2021, Barnard Castle: 30.8% terraced
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New to plumbing compliance checks? Here's what to expect, how to get ready and what it costs, in plain English. Read the quick guide →

England landlord rules: quick version

  • No single certificate: but keep water, heating and sanitation in repair.
  • Legionella: assess the risk for each let.
  • CO alarms: needed where there's a fixed combustion appliance (not gas cookers).

Always double-check on GOV.UK.

Next door to DL12

DL13 · StanhopeDL11 · SwaledaleDL14 · Bishop AucklandNE44 · Riding MillDL15 · CrookDL4 · Shildon

all areas

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 in converted/shared houses (Barnard Castle built-up area)
1.3% 5
  1. ONS Postcode Directory
  2. Doogal
  3. Doogal / ONSPD
  4. postcodes.io
  5. ONS Census 2021

Made with open data. See where it all comes from. Updated 26 October 2026.