7 People with Good Intentions, But...

Had it passed, it would have created a 25% tax on the capital gain produced by the sale of any residential property within 3 years of buying it - whether it's someone's primary residence or a rental. The tax rate would then have declined by 5 percentage points each year until reaching zero after seven years.  

Had it passed, rental property owners would have been prohibited from accessing credit reports if the tenant applicants received any form of government subsidy. 

Had it passed, it would have hindered the ability of property owners to move into their own buildings after invoking the Ellis Act, a 1985 law that authorizes property owners to exit the rental housing business.

Had it passed, rental owners would have been prohibited from putting their properties up for sale — whether they be apartments or a single-family rental — until they had given advance notice to “qualified entities,” such as certain tenant organizations, community land trusts, and affordable housing nonprofits. The notified groups would then have been given a first right to purchase the property and receive excessive time — nearly one year — to secure financing.

Had it passed, rental property owners and property managers would have had to register and follow federal "debt collector" regulations that some credit card companies would be exempted from following.  

Had it passed, property owners would have been prohibited from asking potential tenants anything that would be included in a credit report, such as payment history or evictions.

Had it passed, it would have prevented many private rental housing providers from using the Ellis Act to exit the rental market until all owners of the property have owned their interest for at least 5 years.