Gerrards Cross · SL9
Gas safety certificate in SL9 (Chalfont Common)? We'll point you the right way.
Covering Chalfont Common, Chalfont St Peter, Gerrards Cross, Horn Hill, including Chalfont St Giles & Little Chalfont, Chorleywood South & Maple Cross, Farnhams & Stoke Poges. Find Gas Safe registered engineers nearby.
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SL9 (Chalfont Common) in a nutshell
SL9 covers Chalfont Common, Chalfont St Peter, Gerrards Cross, Horn Hill, in Buckinghamshire and Three Rivers. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for SL9
Two councils in one district
SL9 is split between Buckinghamshire and Three Rivers. 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
SL9 stretches across Chalfont St Giles & Little Chalfont, Chalfont St Peter, Chorleywood South & Maple Cross and more, so give your full postcode, not just 'SL9', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Gerrards Cross run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Gerrards Cross: 82.2% mains gas onlyEngland landlord rules: quick version
- Every year: a check by a Gas Safe registered engineer.
- Within 28 days: give your tenants a copy (new tenants get it before they move in).
- Keep it: hang on to records for at least 2 years.
Always double-check on GOV.UK.
Next door to SL9
Frequently asked questions
Which areas does SL9 cover?
SL9 (Chalfont Common, Chalfont St Peter, Gerrards Cross, Horn Hill) includes the wards of Chalfont St Giles & Little Chalfont, Chalfont St Peter, Chorleywood South & Maple Cross, Farnhams & Stoke Poges, Gerrards Cross & Denham (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to SL9?
Neighbouring districts include HP8 (Chalfont Saint Giles), UB9 (Denham), SL3 (Colnbrook), HP9 (Beaconsfield), SL2 (Farnham Common) (ONS Postcode Directory via Doogal). A pro covering SL9 may well cover these too, so it's worth asking.
How many homes are in SL9?
About 7,888 households and 21,032 residents at the 2011 Census, across 872 active postcodes (Doogal / ONS Postcode Directory).
Which council area is SL9 in?
SL9 sits in Buckinghamshire, Three Rivers (postcodes.io). Parliamentary constituency: Beaconsfield, Chesham and Amersham, South West Hertfordshire.
📊 The numbers behind this page
- Postcode district
- SL9 1
- Areas covered
- Chalfont Common, Chalfont St Peter, Gerrards Cross, Horn Hill 2
- Active postcodes
- 872 3
- Households (2011 Census, via Doogal)
- 7,888 2
- Population (2011 Census, via Doogal)
- 21,032 2
- Electoral wards
- Chalfont St Giles & Little Chalfont, Chalfont St Peter, Chorleywood South & Maple Cross, Farnhams & Stoke Poges, Gerrards Cross & Denham 4
- Parliamentary constituencies
- Beaconsfield, Chesham and Amersham, South West Hertfordshire 4
- Local authority
- Buckinghamshire, Three Rivers 4
- Households heated by mains gas only (Gerrards Cross built-up area)
- 82.2% 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.