However, many people that I've consulted with say that deposits are just that.

We also did extensive renovations so we will definitely have to consult a CPA. 

For an idea of cost, to replace a roof to a 1500sf footprint, could be between $12 & $15K.Property insurance is an expense that none of us like, but at least know, or contact a professional to consult.

@Ramiro RodriguezI use the contract provided by TREC, 1-4 Family Residential contract. https://www.trec.texas.gov/  You may want to consult with an attorney to see if any alterations would be needed to that contract, based on your business model.

Always consult with your attorney before you rely on the above information.

You need to consult professionals about it.

One designer is offering a flat fee of $3k for 3 months of consultation.

Other liens, such as bank, tax or HOA liens are very serious and need to be addressed before a seller can deliver marketable title to a buyer.You would want to consult a RE attorney, but I guess you could either make your offer contingent on the lien being cleared or buy at an appropriate discount and pay the lien yourself.Ignoring a lien against the property is not a solution.

To protection from mold related health issues and damages, Tenant should purchase a Renter's Insurance policy and consult with their physician.

I consulted with RealEstate lawyer and he suggested me, “You could keep sending my letter to him and spending money.