Section 3 · Mandatory inspection frequency
Gas Inspection
Frequency by Installation Type
Inspect
OS
PROPERTY INSPECTION
Installation type
Frequency
Special deadline
Residential — recurring cycle after first inspection
DL 97/2017, Art. 21(1)(b)
Every 5 years
Recurring
—
Non-residential buildings — commercial, hospitality, education, health, industrial (UT III–XII)
DL 97/2017, Art. 21(1)(a)
Every 3 years
Recurring
—
Pre-2018 installations — first inspection
DL 97/2017, transitional provision · DGEG confirmed
Once by deadline
Then recurring
26 Aug 2028
DGEG confirmed