Hello, this has to do with a Texas engineer client who performed design services for a subdivision structure, and has not been paid. The engineer does not have a written agreement and in any event failed to timely file an affidavit claiming a potential mechanics lien. For purposes of this and any future work he may do, would you please tell me if this engineer has a Constitutional lien? We are told he does by Construction lawyers he has informally talked to, but I cannot find any authority clearly stating this, without a formal written contract (he has many, many emails confirming the work which might be construed as a writing, but for purposes of this question we just need to know his basis without a formal contract for purposes of a Texas constitutional lien). Any feedback and authority you can site will be greatly appreciated. Thank you!