randy shaw of the tenderloin housing clinic blames it on a hot real estate market and speculators. >> they buy a building and then the next day they go out of the landlord business which they have never been in and it's a way to preempt eviction laws for speculators. >> reporter: the "ellis act" allows apartment owners who want to get out of the rental business to evict tenants but state and local lawmakers are working to change that by imposing restrictions on how the "ellis act" is used. >> we need to shut down the incentives that they have used tow evict tenants. we have to make sure we make it harder for these repeat real estate speculators trying to flip properties. >> reporter: some suggestions include more permits or hearings before the resale of a property. or require landlords own a building for at least five years before they can use the "ellis act" to evict tenants. >> if someone has to own the building for five years before they can ellis, that puts a speculator out of business. >> reporter: urban green investments bought the building that 92-year-old man and his 88- year-