South Korea's ruling party is reviewing whether to raise the floor area ratio for private redevelopment and reconstruction to as much as 1.2 times the legal ceiling, after holding back an urban-improvement bill from a National Assembly plenary session to allow deeper deliberation. Seoul projects that the change would add about 43,000 net homes by 2031 on top of 87,000 already expected from 310,000 improvement-project groundbreakings, lifting net additions toward 130,000 units, and could cut association member contributions while expanding saleable stock. Mayor Oh Se-hoon said after talks with Land Minister Kim Yoon-duk that the ministry appeared to be reviewing the idea favorably, though the ministry separately said no review direction had been set. Type 3 general residential zones could see ceilings move from 300% to 360%. Opposition lawmakers have also floated larger private-project increases, while officials and experts flag short-term price pressure, public-rental obligations, construction costs and the need for accompanying finance support. Parallel tracks still include Seoul's conditional openness to greenbelt review, holding- and acquisition-tax adjustments, shifting mortgage mix and new office capacity in southeastern Seoul.