(b) if the rent was not increased by a permanent vacancy allowance since the housing accommodation became subject to the RSL and this Code, the number of years that such housing accommodation has been subject to the RSL and this Code. Provided that if the previous legal regulated rent was less than $300, the total increase shall be as calculated above, plus $100 per month. Provided further, that if the previous legal regulated rent was at least $300 and no more than $500, in no event shall the total increase pursuant to this subdivision be less than $100 per month.
All such increases shall be in lieu of any allowance authorized for the one or two year renewal component of the guideline promulgated by the rent guidelines board, but shall be in addition to any other increases authorized pursuant to the RSL and this Code, including adjustments pursuant to section 2522.4(a) of this Part, and any applicable vacancy allowance authorized by the rent guidelines board.
(3) Effective June 24, 2011, the increase authorized in this paragraph may not be implemented more than one time in any calendar year, notwithstanding the number of vacancy leases entered into in such year.