I would also tell you to be extremely careful when doing contracts with builders. 

@Matthew Mclean It's totally your call but my advise is to read the contract that they'll make you sign.

There is much to learn: pricing, marketing, screening, contract law, lease enforcement, late/unpaid rent, property abandonment, squatters, maintenance, tenant neglect or abuse, communication, and 417 other things.Buying a decent property but not managing it well can impact your finances, marriage, sanity, physical health, and desire to invest.

Quote from @Michell Chase: The signed contract states a deposit was collected, so I would make that part of your purchase agreement.

Like in our area, most of what I see hit the MLS there goes under contract quickly, so would be nice if you can find someone selling off market. 

., contracts, blueprints, reports, scanned records, etc.) while managing access permissions for teams and individuals.2.

Wholesaling is definitely a learning process, but here are a few tips to help:1.Build a reliable list of cash buyers.2.Research the areas you want to focus on.3.Get comfortable with contracts and paperwork.4.Focus on negotiating great deals with sellers.5.Stay organized and keep track of your leads.6. 

Both tenants moved out while I was under contract to purchase.

Should I consider sending a breach of contract / eviction notice ? 

The contract says - RESIDENT shall be responsible for disposing of items of such size and nature as are not normally acceptable by the garbage hauler.2.