SECTION 1. Chapter 40S of the General Laws, as appearing in the 2020 Official Edition, is hereby amended in section 1 by striking out the definitions of “New smart growth development” and “Smart growth zoning district” and inserting in place thereof the following:-

''New smart growth development'', any new residential or commercial development, including the substantial redevelopment of existing buildings, subject to the payment of local property taxes that: (a) occurs in a smart growth or starter home zoning district after the adoption of such zoning by the community, and (b) is permitted under the provisions of the smart growth or starter home zoning district. A redevelopment shall be considered substantial if its cost exceeds 50 per cent of the building's pre-renovation assessed value or if it constitutes a change in use from nonresidential to residential. 

''Smart growth zoning district'', a zoning district adopted by a community and approved by the department of housing and community development which is eligible, and which remains eligible for density bonus payments under chapter 40R including without limitation smart growth zoning districts as defined in section 1 of chapter 40R and starter home zoning districts as defined in section 1 of said chapter 40Y.