If the landlord doesn't address the issue, you might be able to seek what's called constructive eviction (basically you evict yourself and terminate the lease) if the landlord fails to perform per the terms of the lease. 

I have owned rentals in 14 states  and Vegas is NOT tenant friendly it totally favors landlords its one of the best in that regard. when I factor in all the cost of Ownership  VS rent I find I can buy a 300k SFR in Vegas that rents for 2200 dollars and it out performs almost anything i owned in the so called cash flow markets.. 

Over long periods of time (decade plus), it will out perform any other state.

Assuming they are licensed, a complaint to the licensing board would be appropriate….maybe even more so if they are not licensed, and performing work that requires one. 

As @Jiri B.said, they're not too difficult for you to perform since when done well the client simply does what they always do normally - sell a piece of investment property and purchase new investment real estate.The devil is in the details in between. 

Be sure to remind the builder that their delays (performance) have caused your delay (performance) as their delay provided a scheduling conflict for you.  

When (insert type of income-producing real estate here) becomes more popular, buyers are willing to pay more, which means cap rates go down.There are three primary forces at play here.  1) falling interest rates make debt cheaper and makes real estate more attractive.  2) rent growth gives buyers hope that the income stream they are purchasing will grow over time.  3) poor performance or perceived risk of other investment vehicles increase the desirability of income real estate, meaning a lower cost of equity capital for real estate buyers.Expanding on point #3, the worse other investment vehicles perform, the less investors demand from their real estate investments.  

In states which allow a non-attorney to close a real estate related transaction the title company may perform three functions. 

We are so pleased with this property's performance.

However, the same expense performed after the unit is in the rental market can be maintenance.