Note: The DearEsq free 'ask a lawyer' site is offered as a free informational service to the public and is not intended as legal advice. Laws vary from state-to-state, and in addition every situation is unique, and relevant facts may not be known. The answer to the question posed below may not apply to in your state or to your situation. For legal advice in your state and your situation you should consult with an attorney in your state who is familiar with the rules and laws in your state.
My neighbor has allowed his house to fall into disrepair and as a result, I have lost a potential buyer for my house. Can I sue for the loss?
To win a lawsuit like that, you would need to prove that your neighbor breached some obligation that he had to you specifically, and that breach led directly to the lost buyer, and a quantifiable financial loss resulted. That strikes me as a difficult set of facts to prove, but given the minimal detail I have, I can’t say for sure that the answer is no.
The best way to find out for sure is to consult with an attorney who can go over the specific details of your situation, and give you an educated opinion.