you are going to have to provide a lot more details. "Can I claim money I spent on the house from my personal funds on my 1040 or somewhere else?" we know nothing about the trust provisions, why you spent the money, what it was for, the connection between the house and the trust, etc. the relationship between you and the "other beneficiaries" However, in general, personal expenses are not deductible except for taxes and mortgage interest.
this might be a situation where it would be best to confer with a tax pro that can go over all relevant information.