Texas Construction Documentation Requirements for Contractors

TxDOT Compaction Documentation: Tex-113-E

Texas DOT uses a state-specific compaction test method: Tex-113-E, which governs determining the compaction characteristics of soils using the Texas Gyratory Compactor. Unlike the Proctor method used in most other states, the Texas gyratory method produces different maximum dry density values — and your field documentation must reference Tex-113-E results, not ASTM D698 or D1557.

For TxDOT contracts, compaction field reports must include:

• • Maximum dry density (from Tex-113-E lab test)
• • Optimum moisture content
• • Field density (nuclear gauge or sand cone method)
• • Field moisture content
• • Percent compaction (field density ÷ max dry density × 100)
• • Test location with stationing and offset from centerline
• • Layer thickness and lift number
• • Inspector name, date, and project ID

Standard TxDOT compaction requirements: 95% for subgrade, 98% for flexible base, and 100% for some select fill applications. Failing tests must be documented, corrective compaction noted, and a re-test performed — all in the same report package.

Use the compaction percentage calculator to verify field results before submitting reports.

Pad Certification Requirements in Texas

Most Texas cities require a pad certification — a PE-stamped document confirming the finished pad elevation matches the approved grading plan — for commercial construction permits over $50,000 in value. Dallas, Fort Worth, Houston, San Antonio, and Austin all have this requirement, though the exact threshold varies by city.

Texas pad certification documentation must include:

• • Benchmark documentation (monument ID, elevation, datum)
• • Reference to the approved grading plan (plan number, revision date)
• • Field survey shots — minimum 5 per lot or pad area
• • Design elevations from the approved plan at each shot location
• • Deviation table (as-graded minus design)
• • Texas tolerance: typically ±0.15 ft (some cities allow ±0.20 ft)
• • Positive drainage verification (slopes away from structure)
• • PE stamp and signature

Houston's Harris County requires pad certs for all commercial permits over $50K and for residential subdivisions per the approved CLOMR/LOMR for flood-prone areas. Dallas typically requires pad certs for commercial construction and for any lot in a Special Flood Hazard Area.

Texas Lien Law Documentation: Chapter 53, Texas Property Code

Texas lien law under Chapter 53 of the Texas Property Code is one of the most procedurally demanding in the country. Miss a notice deadline by a single day and you lose your lien rights entirely — there are no cure periods for most notice requirements.

Critical documentation requirements for Texas lien rights:

• • Preliminary notice (Subcontractors): Must send monthly Tex. Prop. Code §53.056 notices by the 15th of each month for the previous month's unpaid amounts. No single preliminary notice covers the whole job.
• • Notice of Contractual Retainage: Required by subcontractors and suppliers to preserve lien on retainage — must be delivered before job completion.
• • Affidavit of lien: Filed with the county clerk in the county where the property is located. Original contractors: 15th day of 4th month after completion. Subcontractors: 15th day of 4th month after last month work was performed.
• • Notice of Lien Filing: Must be sent to owner and GC within 5 days of filing the affidavit.

Documentation that supports lien enforcement: signed contracts, purchase orders, delivery tickets, daily logs showing work performance dates, invoices with amounts, and any written correspondence about payment disputes.

OSHA in Texas: Federal Standards Apply

Texas does not operate its own OSHA State Plan for private-sector employers. Federal OSHA (29 CFR Part 1926 for construction) applies directly. This means standard federal OSHA documentation requirements apply: OSHA 300 log for injuries and illnesses, toolbox talk records, equipment inspection logs, training documentation, and site safety plans.

OSHA has active area offices in Houston, Dallas, Austin, and San Antonio. Texas is one of the most active OSHA enforcement states by citation volume due to the scale of construction activity. See our full OSHA documentation guide for what records to keep.

Key Texas Construction Markets

Common Documentation Failures That Cost Texas Contractors Money

• 1. Using ASTM Proctor results for TxDOT jobs. TxDOT uses Tex-113-E, not ASTM D698. Submitting Proctor-based reports gets the entire submittal rejected, causing delay penalties.
• 2. Missing monthly lien notices. Texas subcontractors who skip even one month of preliminary notices lose lien rights for that month's work — permanently. No catch-up allowed.
• 3. Pad certs without drainage verification. Houston and Dallas both require positive drainage documentation, not just pad elevation. Certs that omit drainage get rejected.
• 4. No GPS coordinates on Austin pad certs. Austin specifically requires coordinate documentation; an elevation-only cert doesn't meet requirements.
• 5. Verbal change order approvals. Texas courts side with the party that has documentation. Text messages are helpful but not as strong as signed change orders. Daily reports corroborating the work are essential backup.

Frequently Asked Questions