Donaghadee · BT21

EPC in BT21 (Donaghadee)? We'll point you the right way.

Covering Donaghadee, including Groomsport, Loughries, Warren. Find accredited domestic energy assessors nearby.

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Request an EPC in BT21 (Donaghadee)

No EPC assessor listed for BT21 (Donaghadee) yet. Tell us what you need and we'll find you a registered EPC assessor, free.

Request an EPC in BT21 (Donaghadee)

How to check an EPC assessor is registered: see the Donaghadee page.

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BT21 (Donaghadee) in a nutshell

BT21 covers Donaghadee, in Ards and North Down. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for BT21

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Ards and North Down council area

BT21 is in Ards and North Down's area. Some councils run their own landlord licensing, so it's worth checking theirs.

Where's this from?postcodes.io (ONSPD) local authority
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Give your full postcode

BT21 stretches across Donaghadee, Groomsport, Loughries and more, so give your full postcode, not just 'BT21', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Lots of detached homes

Donaghadee has plenty of detached houses. More outside walls means insulation counts for a lot on your rating, so dig out any loft or cavity paperwork.

Where's this from?NISRA Census 2021, Donaghadee: 34.7% detached
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New to EPCs? Here's what to expect, how to get ready and what it costs, in plain English. Read the quick guide →

Northern Ireland landlord rules: quick version

  • When you let: you need an EPC.
  • Register: with the Landlord Registration Scheme.

More detail on the Donaghadee page. Always double-check on nidirect.

Next door to BT21

BT19 · BangorBT20 · BangorBT22 · NewtownardsBT23 · NewtownardsBT18 · HolywoodBT16 · Dundonald

← Energy Performance Certificate (EPC) across Donaghadee · all areas

Frequently asked questions

Which areas does BT21 cover?

BT21 (Donaghadee) includes the wards of Donaghadee, Groomsport, Loughries, Warren (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to BT21?

Neighbouring districts include BT19 (Bangor), BT20 (Bangor), BT22 (Newtownards), BT23 (Newtownards), BT18 (Holywood) (ONS Postcode Directory via Doogal). A pro covering BT21 may well cover these too, so it's worth asking.

How many homes are in BT21?

About 3,323 households and 7,814 residents at the 2011 Census, across 244 active postcodes (Doogal / ONS Postcode Directory).

Which council area is BT21 in?

BT21 sits in Ards and North Down (postcodes.io). Parliamentary constituency: North Down, Strangford.

📊 The numbers behind this page
Postcode district
BT21 1
Areas covered
Donaghadee 2
Active postcodes
244 3
Households (2011 Census, via Doogal)
3,323 2
Population (2011 Census, via Doogal)
7,814 2
Electoral wards
Donaghadee, Groomsport, Loughries, Warren 4
Parliamentary constituencies
North Down, Strangford 4
Local authority
Ards and North Down 4
Households privately renting (Donaghadee settlement)
12.4% 5
  1. ONS Postcode Directory
  2. Doogal
  3. Doogal / ONSPD
  4. postcodes.io
  5. NISRA Census 2021

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