Sudbury · CO10

EPC in CO10 (Sudbury)? We'll point you the right way.

Covering Sudbury, including Assington, Box Vale, Brett Vale. Find accredited domestic energy assessors nearby.

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CO10 (Sudbury) in a nutshell

CO10 covers Sudbury, in Babergh and Braintree and West Suffolk. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for CO10

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Two councils in one district

CO10 is split between Babergh and Braintree and West Suffolk. 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

CO10 stretches across Assington, Box Vale, Brett Vale and more, so give your full postcode, not just 'CO10', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Terrace 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, Sudbury: 31.3% terraced, 31.0% semi-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 →

England 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.

More detail on the Sudbury page. Always double-check on GOV.UK.

Next door to CO10

CO8 · BuresCO6 · ColchesterIP33 · Bury Saint EdmundsCO9 · HalsteadIP29 · BarrowIP32 · Bury Saint Edmunds

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

Frequently asked questions

Which areas does CO10 cover?

CO10 (Sudbury) includes the wards of Assington, Box Vale, Brett Vale, Bures St Mary & Nayland, Chadacre, Clare, Hundon & Kedington, Great Cornard, Lavenham, Long Melford, North West Cosford, Stour Valley North, Stour Valley South, Sudbury North East, Sudbury North West, Sudbury South East, Sudbury South West, Whepstead & Wickhambrook (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to CO10?

Neighbouring districts include CO8 (Bures), CO6 (Colchester), IP33 (Bury Saint Edmunds), CO9 (Halstead), IP29 (Barrow) (ONS Postcode Directory via Doogal). A pro covering CO10 may well cover these too, so it's worth asking.

How many homes are in CO10?

About 20,497 households and 46,604 residents at the 2011 Census, across 1,682 active postcodes (Doogal / ONS Postcode Directory).

Which council area is CO10 in?

CO10 sits in Babergh, Braintree, West Suffolk (postcodes.io). Parliamentary constituency: Braintree, South Suffolk, West Suffolk.

📊 The numbers behind this page
Postcode district
CO10 1
Areas covered
Sudbury 2
Active postcodes
1,682 3
Households (2011 Census, via Doogal)
20,497 2
Population (2011 Census, via Doogal)
46,604 2
Electoral wards
Assington, Box Vale, Brett Vale, Bures St Mary & Nayland, Chadacre, Clare, Hundon & Kedington, Great Cornard, Lavenham … 4
Parliamentary constituencies
Braintree, South Suffolk, West Suffolk 4
Local authority
Babergh, Braintree, West Suffolk 4
Households privately renting (Sudbury built-up area)
17.9% 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.