Hatfield · AL9

EPC in AL9 (Hatfield)? We'll point you the right way.

Covering Hatfield, Brookmans Park, Essendon, North Mymms, including Brookmans Park and Little Heath, Hatfield Central, Hatfield East. Find accredited domestic energy assessors nearby.

Free to use · No sign-up to search · Always check their registration before you book

Request an EPC in AL9 (Hatfield)

No EPC assessor listed for AL9 (Hatfield) yet. Tell us what you need and we'll find you a registered EPC assessor, free.

Request an EPC in AL9 (Hatfield)

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

See what a listing looks like

AL9 (Hatfield) in a nutshell

AL9 covers Hatfield, Brookmans Park, Essendon, North Mymms, in East Hertfordshire and Welwyn Hatfield. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for AL9

🧭

Two councils in one district

AL9 is split between East Hertfordshire and Welwyn Hatfield. Some councils run their own landlord licensing, so check which one your home is in.

Where's this from?postcodes.io (ONSPD) local authority
📍

Give your full postcode

AL9 stretches across Brookmans Park and Little Heath, Hatfield Central, Hatfield East and more, so give your full postcode, not just 'AL9', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
🧱

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, Hatfield: 36.0% terraced, 23.7% semi-detached
🌱
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 Hatfield page. Always double-check on GOV.UK.

Next door to AL9

AL10 · HatfieldAL7 · Welwyn Garden CityAL8 · Welwyn Garden CityEN6 · Potters BarAL6 · WelwynEN5 · High Barnet

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

Frequently asked questions

Which areas does AL9 cover?

AL9 (Hatfield, Brookmans Park, Essendon, North Mymms) includes the wards of Brookmans Park and Little Heath, Hatfield Central, Hatfield East, Hertford Rural, Welham Green and Hatfield South (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to AL9?

Neighbouring districts include AL10 (Hatfield), AL7 (Welwyn Garden City), AL8 (Welwyn Garden City), EN6 (Potters Bar), AL6 (Welwyn) (ONS Postcode Directory via Doogal). A pro covering AL9 may well cover these too, so it's worth asking.

How many homes are in AL9?

About 4,342 households and 10,641 residents at the 2011 Census, across 429 active postcodes (Doogal / ONS Postcode Directory).

Which council area is AL9 in?

AL9 sits in East Hertfordshire, Welwyn Hatfield (postcodes.io). Parliamentary constituency: North East Hertfordshire, Welwyn Hatfield.

📊 The numbers behind this page
Postcode district
AL9 1
Areas covered
Hatfield, Brookmans Park, Essendon, North Mymms 2
Active postcodes
429 3
Households (2011 Census, via Doogal)
4,342 2
Population (2011 Census, via Doogal)
10,641 2
Electoral wards
Brookmans Park and Little Heath, Hatfield Central, Hatfield East, Hertford Rural, Welham Green and Hatfield South 4
Parliamentary constituencies
North East Hertfordshire, Welwyn Hatfield 4
Local authority
East Hertfordshire, Welwyn Hatfield 4
Households privately renting (Hatfield built-up area)
26.8% 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.