Do I Need a Permit for Foundation Repair?

If your foundation repair involves piers, underpinning, wall anchors, or steel or carbon fiber bracing, plan on a building permit. The repair changes how the house carries its weight or resists soil pressure, and building codes treat that as structural work. In many places, especially across Texas, the city also wants a licensed engineer to design the repair and sign off when it is done.

Foundation contractors often handle the permit paperwork for you, which is one reason homeowners don’t realize a permit was required. Before you sign a contract, make sure a permit will be pulled and that you will end up with the closing documents. If you are not sure which office covers your address, you can find your local building department.

What the model code says

Most US cities and counties adopt the International Residential Code (IRC) with local amendments. The sections below are quoted from the 2021 IRC as published on UpCodes.

• R105.1 (permits required). An owner who intends to “construct, enlarge, alter, repair, move, demolish” a building must apply for and obtain a permit. Repair is listed alongside new work.
• R105.2.2 (ordinary repairs). Ordinary repairs do not need a permit, but “such repairs shall not include the cutting away of any wall, partition or portion thereof, the removal or cutting of any structural beam or load-bearing support.” Excavating under a footing to install piers, or altering a foundation wall, falls on the permit side of that line.
• R102.7.1 (existing buildings). Repairs must meet the code for new work and “shall not cause an existing structure to become less compliant” than it was before.
• R301.1.3 (engineered design). Structural elements that go beyond the IRC’s prescriptive limits must be “designed in accordance with accepted engineering practice.” This is why cities commonly ask for an engineer’s design for piers and anchors, or, as Lawrence, Kansas allows, a manufacturer’s system with an ICC-ES evaluation report.
• R404.1.1 (foundation walls). Concrete or masonry foundation walls must be engineered when they are subject to hydrostatic pressure from groundwater, or when they support more than 48 inches of unbalanced backfill without permanent lateral support at the top or bottom. That describes many bowing basement walls.
• R106.1 (construction documents). The building official can require plans prepared by a registered design professional “where special conditions exist.”
• R401.4 (soil tests). Where expansive, compressible or shifting soils are likely, the building official decides whether to require a soil test.

When you usually need a permit

Expect a permit for:

• Steel push piers, pressed concrete piles, or helical piers installed under an existing slab or footing.
• Underpinning, meaning extending or deepening an existing footing.
• Wall anchors, plate anchors, or ground anchor tie-backs for a bowing basement wall.
• Steel beams or carbon fiber straps used to brace a foundation wall.
• Replacing or adding piers, beams, or posts under a pier-and-beam house.
• Leveling or shimming the floor system of a pier-and-beam house, which some cities count as foundation repair.
• Interior drain tile and sump pump systems, in cities that regulate basement drainage. Pumps usually also need electrical work.
• Repairing water, sewer, or gas lines that broke as the house moved. These are typically separate plumbing permits.

Work that is often exempt

Some foundation work stays inside the ordinary-repair exemption, but only if your local rules say so:

• Cosmetic crack sealing or epoxy and polyurethane injection that adds no structural reinforcement.
• Exterior dampproofing or waterproofing coatings in some cities.
• Mudjacking, which Lawrence, Kansas lists among minor repairs that may be exempt. Cities that define foundation repair to include leveling, such as Grand Prairie, may treat lifting the house itself as permit work.
• Grading and gutter work that moves water away from the foundation. The IRC requires lots to slope at least 6 inches within the first 10 feet away from foundation walls (R401.3), and fixing drainage is usually part of any lasting repair.

Some cities also exempt very small repairs by size. Austin is one example (see below).

How the rules differ by city

San Antonio, Texas. Information Bulletin 172 (revised April 7, 2025) requires residential foundation repairs to be “designed by or performed under the engineering guidance of a professional engineer licensed by the State of Texas,” and that engineer also performs the inspections. You apply online through the Minor Building Repair Application and upload an Assumption as Engineer of Record Letter that is signed and sealed. Sealed construction documents are optional. The city clears all foundation repair inspections when the engineer of record uploads an inspection letter, and only letters from the engineer of record are accepted. If you change engineers, the original engineer must withdraw in writing and the new one must file a new assumption letter. The city charges a double fee if work starts before the permit is issued. A city final building inspection is still required for skirting, ventilation, and subfloor access on pier-and-beam homes.

Fort Worth, Texas. The residential remodel submittal checklist (dated 05/27/2026) lists two items for foundation repair: engineered foundation plans and an engineered structural letter.

Austin, Texas. Austin’s list of work exempt from building permits includes “a foundation repair that does not exceed 128 square feet.” Anything larger needs a permit.

Grand Prairie, Texas. The city defines foundation repairs as “leveling, installation and/or replacement of piers, footings, or any modification/alteration of any part of the flooring system,” and all of them need a permit. Before the permit is issued, you submit a stamped engineer’s letter and plans showing the affected areas and whether any water, sewer, or gas lines will need testing. Grand Prairie notes that the requirements apply only to the sections you repair, so untouched piers and beams do not have to be brought up to current code. The city estimates processing at about 5 to 10 business days.

Lawrence, Kansas. The April 2022 handout says permits are required for structural alterations of foundation systems, including “adding piers, steel posts, helical piers, I-beams, or ground anchor tie-back systems,” and for basement drainage systems. You can submit either a pre-engineered repair system with an ICC-ES evaluation report or a sealed report from a Kansas-licensed engineer. Inspections may include piers, the foundation wall, slab, plumbing and electrical rough-ins, and framing for I-beams and tie-backs. An engineer’s inspection report can be accepted in place of city inspections. Fees are based on the valuation of materials and labor.

Tampa, Florida. Tampa’s residential foundation stabilization guide requires signed and sealed building plans and a signed and sealed engineering report “if the work includes underpinning.” The site plan must show trees within 20 feet of the work. Homes in a FEMA Special Flood Hazard Area also need a Substantial Improvement determination.

Fee example. Dallas charges a base fee of $181 per dwelling unit, plus $100 for each additional trade, for alterations or repairs of single-family and duplex structures. That is the general residential repair table in the city’s Permit Fee Schedule effective July 1, 2025; the schedule has no separate foundation repair line. Most cities set fees in one of two ways: a flat repair-permit fee like this one, or a percentage of the job’s valuation like Lawrence. See building permit costs for how valuation-based fees work.

What inspections look like

Foundation repair inspections differ from typical building inspections in two ways.

1. The engineer often inspects instead of, or alongside, the city. Much of what matters, such as how deep piers go and what they bear on, can only be seen while the work is open. Cities like San Antonio and Lawrence rely on the engineer of record to observe that and certify it in a letter.
2. The permit closes on paper. The final engineer’s letter, plus a city final where required, is what closes the permit. If the letter is never filed, the permit stays open even though the crew is long gone.

Ask early whether the city will inspect pier holes, wall anchor excavations, or bracing before backfill. Ask whether smoke and carbon monoxide alarms will be checked at final, because IRC R314.2.2 and R315.2.2 can require new-home alarm standards when a permitted repair occurs. See building inspection stages for how scheduling usually works.

What to have ready

• An engineer’s evaluation of the cause of movement and the recommended repair. Get this before you compare contractor bids, so everyone is pricing the same scope.
• A sealed repair plan showing pier or anchor locations, quantities, and details, or a manufacturer system with an evaluation report if your city accepts it.
• The engineer-of-record or assumption letter, in cities that require one at application.
• Contractor registration or license numbers. San Antonio requires a city-licensed residential building contractor (or the owner), and Fort Worth’s application asks for a city contractor registration number.
• A plumbing test plan if lines may be disturbed, plus separate plumbing or electrical permits for line repairs or a sump pump.
• A site plan showing trees, easements, and access, where the city asks for it.
• Flood zone documents if the home is in a mapped flood hazard area.
• The final engineer’s letter and the city’s final inspection record. Keep both with your house papers.

Selling a home with foundation repairs

Repairs that were permitted and engineered are much easier to explain to a buyer than repairs that weren’t. In Texas, the TREC Seller’s Disclosure Notice (form OP-H) asks sellers whether they know of defects in the “Foundation/Slab(s),” “Previous Structural or Roof Repair,” “Landfill, Settling, Soil Movement,” and “structural modifications, or other alterations or repairs made without necessary permits.” Other states use different forms, but similar questions are common.

Before you hire a contractor, ask whether its warranty transfers to a future owner, what the transfer requires, and whether it depends on the permit being closed. Get the answers in writing. For work that was done without a permit, see unpermitted work for how retroactive permits usually work. Expect to hire an engineer to evaluate repairs that are already buried.

Questions to ask your building department

• Does foundation repair need a permit at any size, or is there a size threshold like Austin’s 128 square feet?
• Do you require a licensed engineer’s design, a manufacturer’s ICC-ES report, or either one?
• Will the engineer’s inspection letter be accepted in place of city inspections?
• Are crack injection, waterproofing, interior drain tile, or mudjacking exempt here?
• Do I need separate plumbing or electrical permits for line repairs or a sump pump?
• Will a final inspection include smoke and carbon monoxide alarms?
• What happens to the permit if we change engineers or contractors partway through?

If you plan to do any of the work yourself, read owner-builder permits first. For the application steps, see how to apply for a building permit.