The Texas Subcontractor Lien Deadline: The 15th-Day Rule, Worked Through With Real Dates

//Two deadlines, not one

A Texas subcontractor working a commercial or industrial job faces two separate statutory deadlines, not one. Miss either and the right to file a valid mechanic's lien for that month's work disappears, permanently. The first is a monthly notice mailed to the property owner and the original contractor. The second is the lien affidavit itself, filed with the county clerk where the project sits. They run on different clocks, and treating them as one deadline is the single most common way a legitimate claim gets thrown out.

//The notice deadline: Prop. Code 53.056

Under Texas Property Code 53.056, a subcontractor, supplier, or anyone without a direct contract with the owner — a "derivative claimant" — must send written notice to the owner and the original contractor. For non-residential construction, that notice is due not later than the 15th day of the third month after the month in which the labor or materials were provided. For residential construction, the window is shorter: the 15th day of the second month after the month the work or materials went in. The notice must substantially follow the statutory form, and it goes out every month labor or materials are furnished — it is not a one-time filing.

//The filing deadline: Prop. Code 53.052

Under Texas Property Code 53.052, the lien affidavit itself runs on a later, separate clock. An original contractor on a non-residential project must file not later than the 15th day of the fourth month after the month the work under the original contract is completed, terminated, or abandoned. A subcontractor or supplier without a direct contract with the owner must file not later than the 15th day of the fourth month after the month labor or materials were last furnished. Residential projects compress both filing deadlines to the third month. Retainage claims get their own separate rule, covered below.

//Worked example: a drywall sub on a commercial build

Say a drywall subcontractor last furnishes labor and material on a non-residential commercial project on July 22, 2026, with no direct contract with the owner. The statute counts from the month, not the exact day, so every day in July falls under the same clock. The monthly notice under 53.056 is due not later than the 15th day of the third month after July — that is October 15, 2026. The lien affidavit under 53.052 runs from the same July furnishing date but allows a longer window: not later than the 15th day of the fourth month after July, which is November 15, 2026. Two deadlines, one job, one month apart — miss the October 15 notice and the November 15 affidavit becomes worthless, because notice is a precondition to a valid lien for a claimant without a direct contract with the owner.

• +Last labor or materials furnished: July 2026.
• +Monthly notice to owner and original contractor, substantially in the statutory form: on or before October 15, 2026.
• +Lien affidavit filed with the county clerk where the property sits: on or before November 15, 2026.
• +Copy of the filed affidavit sent to the owner, and to the original contractor if the filer isn't one, within 5 days of filing — required by Texas Property Code 53.055.

//The trap: counting by month, not by day

Counting by calendar month is more forgiving than it looks, and also easier to miscalculate. Work performed on July 1 and work performed on July 31 carry the identical deadline — both fall in "the month" of July, so both get the same October 15 notice deadline and the same November 15 filing deadline. The trap runs the other way: materials furnished on August 1, just one day into the next month, pushes both deadlines out by roughly 31 days. Track deadlines by the calendar month of last furnishing, not by counting a fixed number of days from an invoice date — that mix-up is what costs subcontractors their lien rights most often.

//Retainage runs on its own clock

Retainage withheld under the contract doesn't follow the deadlines above. Under 53.052, a claim against retainage must be filed not later than the 15th day of the third month after the month the original contract is completed, terminated, or abandoned — measured from when the whole project's original contract ends, not from when that particular subcontractor's own scope wrapped. A drywall sub who finished in July on a project that doesn't reach completion until December is still inside the retainage window well into 2027, even after the ordinary lien deadline on their own labor and materials has already passed.

//What a calculator can and can't do

The free Texas lien deadline calculator on this site runs the month-counting rules above in English or Spanish and returns the notice date and filing date for a given furnishing date. It is a calculation based on the statute, not legal advice, and it doesn't know whether a project is residential or non-residential, whether retainage applies, or whether a contract layers its own notice requirements on top of Chapter 53 — confirm project type and any contract-specific notice clauses before relying on any date it returns.

If you want the notice and filing dates for one of your own jobs laid out on a single page, email info@noumansadiq.com with the job's state and the month work started.