Landlord Gas Safety Checklist for Gwynedd Holiday Lets
A working checklist for multi-property landlords across Caernarfon, the Llŷn, and Eryri.
One cottage is a calendar reminder. Five cottages is a system — or a string of last-minute calls. Use this as a working list for Gwynedd holiday lets, not a poster on the wall.
Per-property basics
For each let, keep one row (spreadsheet is fine):
- Address and postcode
- Property type (cottage / lodge / static)
- Gas type if known (natural gas / LPG)
- Appliance list (boiler, hob, fire, outdoor points)
- Current CP12 expiry
- Who holds keys
- Who must receive the PDF
That row feeds CP12 visits and landlord packages.
Annual rhythm
- Expiry dates sitting in the booking calendar, not only email
- Renewals booked before peak for coastal and Eryri stock
- Appliance list updated after any install or removal
- Agent contacts still current after staff changes
How often? See how often short-term lets need a certificate.
Before each visit
- Access confirmed with a named person or working key-box
- Cupboards cleared
- Outdoor points mentioned if they exist
- Empty window agreed (avoid guest arrival hour)
Detail: preparing for a CP12 visit.

By area (quick prompts)
| Area | Watch for |
|---|---|
| Caernarfon | Compact cottage cupboards, busy summer turns |
| Pwllheli / Llŷn | Sharp summer peak — renew early |
| Porthmadog | Lodge parks, LPG, park-office copies |
| Barmouth | Seafront stock, weekend changeovers |
| Dolgellau / Eryri | Hiking-weekend spikes, cold arrivals |
| Blaenau Ffestiniog | Upland cold voids, hard heat-up |
After the visit
- PDF saved in your landlord folder and sent to the agent
- Next expiry entered immediately
- Any remedial work booked before the next guest
- Notes shared with cleaners if access was blocked this time
Portfolio red flags
- Three properties sharing the same August expiry
- Certificates only in one personal inbox
- “We’ll book it when we’re next in Wales” with no date
- Lodge outdoor supplies never listed
Turn the list into visits
Want the checklist turned into a visit plan? Send your property list when you book a CP12 visit. We’ll propose dates that don’t collide with your busiest changeovers.