A buyer may not arrange for a hydrostatic test of a property without written consent by the seller.
Fact. The Property Condition Paragraph of the One to Four Family Residential Contract (Resale) (TXR 1601, TREC 20-17) and the Residential Condominium Contract (Resale) (TXR 1605, TREC 30-16) states that hydrostatic testing must be separately authorized in writing. You should provide the parties Addendum for Authorizing Hydrostatic Testing (TXR 1949, TREC 48-1) to provide this written authorization and specify whether the buyer or seller will pay for any damage caused by a hydrostatic test.