(f) In determining whether a condition is de minimis, the DHCR may consider the passage of time during which a disputed service was not provided and during which no complaint was filed by any tenant alleging failure to maintain such disputed service, as evidencing that such service condition is de minimis, and therefore does not constitute a failure to maintain a required service, provided that:
(1) for purposes of this subdivision, the passage of four years or more shall be considered presumptive evidence that the condition is de minimis, with such four-year period to be measured without reference to any changes in building ownership or the tenancy of the subject housing accommodation;
(2) services required to be provided by laws or regulations other than the RSL and this Code shall not be subject to this subdivision.
(g)