CA AB1333

Prohibits homebuilders of new single-family dwelling units from conducting bundled sales (2 or more parcels under a single assessor's parcel number in one transaction) to institutional investors if the certificate of occupancy was issued and the contract of sale was entered into on or after January 1, 2025.

Defines "institutional investor" as a non-natural person entity with portfolios containing more than 1,000 single-family dwelling units, including limited liability companies, limited liability partnerships, and real estate investment trusts.

Exempts homebuilders from this prohibition if they obtain an affidavit signed under penalty of perjury from the buyer stating the buyer is not an institutional investor.

Allows homebuilders to construct and own rental units for their own portfolio or transfer to subsidiaries/parent companies, and allows institutional investors to construct and own rental units if they acquired controlling interest in the land before development permit issuance.

Authorizes the Attorney General, district attorney, county counsel, or city attorney to bring civil actions for violations, with civil penalties of $100,000 per parcel and reasonable attorney's fees and costs available to prevailing parties.