If forced to cure - and it will be a condition of remedy - the tenant can take action against you for damages from leasing an illegal property. 

When these law suits start flying I am sure the attorneys will do a deep dive into who or what company was the per curing cause for these investments. its is very common in this industry to pay referral fee's for leads ..

It's been a few years since I was cured of that delusion.

For that you probably need a check valve or something similar to stop the sewage from coming in when the city sewer fills up. 

They typically give you 30 days to cure nonemergency issues.

@Kyle Carter recommend you search here on BP for Section 8 threads as there's a lot of feedback already.Just know this, S8 is NOT a cure-all!

The owner had no money from the deal to cure the lien, and because we were already passed our 1031 exchange identification deadline, we asked what the payoff was and ended up paying out of the door $112k to close this deal.

If the failure to join was a ministerial oversight, then a new deed would probably cure the defect. 

Typically we talk about cure notices for tenants, but they do go both ways for breach of contract.

@Megan Mason recommend you watch some of the videos from @James Wise youtube channel on S8 evictions.We've been dealing with S8 tenants for over 20 years and they are NOT a cure-all for rent collection challenges.Since rents in Class A & B areas exceed S8 limits, most of your S8 rentals are going to be in Class C/D areas.