I painted everything with an oil-based primer that seals in anything left behind.

Sealing previous evictions?  

They forgot to completely seal the floor in the master bathroom after they took out the old flooring and put in new flooring.

I live in Seal Beach. 

It is really best if you have someone with you who understands construction.A few pointers:look for cracks in the walls and floors.Look for water damaged drywall.Do the doors close and seal properly?

My suggestion would be the following: Get quotes from a print shop for the following: #10 Envelopeswhatever color you want for said envelopes1/0 blackreturn address imprintedqty 15-20k (buy the whole six month supply, best pricing) Then you will need a quote for the paper letters: 8.5 x 1120# Bond1/0 black + variable data (you will want to put on their names and address in question) qty 2,500 Then you will need a quote for mailing services, just in case: NCOA, inkjet envelopes, stuff, fold, sort, seal, tray and deliver to USPSqty 2,500 a month for six months(commit and tell them you are looking to do this for six months, you might get better pricing) Then you can use THEIR bulk mail stamp, saving you $400 and all the hassle I mentioned above. 

It is a sealed pit with a vent. 

I’m looking to go into contract as soon as possible to seal the deal.

Then they look at kitchen sealing and watch for rain. 

4)Do you normally use earnest money to seal in a contract?