SAN FRANCISCO—Five local real estate-related measures were on the ballot this week and all but two seem to be headed for defeat. In addition, two statewide propositions having real estate implications were passed by California voters, GlobeSt.com learns.

Voters backed Proposition X, a measure aimed at requiring builders to replace any arts, nonprofit or production space that is eliminated during development. The measure, an attempt to slow gentrification, seems to be poised for victory. This requires development projects in the Mission or South of Market to get a conditional use authorization if the project would demolish or convert space used by production, distribution, repair, arts activities or nonprofit groups and requires the new development to replace the demolished or converted space.

Proposition O seems to be in the win column as well. It would exempt the Hunters Point Shipyard project from voter-imposed Proposition M, a citizen initiative in 1986, limiting new office space that can be approved each year to 950,000 square feet. It will allow the developer, FivePoint, to win approvals for up to 5.1 million square feet of office space at its Shipyard and Candlestick Point properties without competing against office projects in high-rent downtown districts.