Permits and contractor licensing for foundation work

Foundation work is structural, which means it is permitted work, which means somebody has to file with somebody. In this county the answer to who and where depends on a single question: is the address inside the Murfreesboro city limits or not. The two jurisdictions are genuinely separate offices, and they are not even running the same edition of the code.

Inside the city: Murfreesboro Building and Codes

The City of Murfreesboro Building and Codes Department is open weekdays from eight in the morning until half past four, with the counter stopping payments at four.

Adopted codes. The city currently enforces the 2018 International Residential Code and 2018 International Building Code, along with the 2018 plumbing, mechanical, fuel gas, property maintenance, fire, energy conservation, swimming pool, and existing building codes, plus the 2017 National Electrical Code and ICC A117.1-2009 for accessibility. These were adopted under Ordinance 18-O-71.

Is foundation repair permitted work? Yes. The city's own adopted fee schedule states that building permits are required as prescribed by the International Residential Code for all construction, alteration, and repairs other than ordinary maintenance repairs. Underpinning a settled footing, installing piers, or rebuilding a failed foundation wall is an alteration or a structural repair by any reading, and it is not ordinary maintenance.

What it costs. The residential base fee for additions or alterations to primary structures is calculated at $8.00 per $1,000 of valuation with a minimum fee of $50.00, rounded up to the next dollar. Valuation means the contract amount including structural, electrical, plumbing, mechanical and gas work, interior finish, site preparation, design fees, overhead and profit. In practice:

• A $6,000 crawl space repair: about $48, so the $50 minimum applies
• A $12,000 pier job: about $96
• A $30,000 underpinning project: about $240
• Partial permits, including land disturbance and grading: $100 each

Set against the size of the work, permit fees here are close to a rounding error, which makes skipping one an exceptionally poor trade.

Who pulls it. The city allows homeowners to self-permit their primary residence, but where the property is intended for rental use a Tennessee licensed contractor must obtain the permit.

Outside the city: Rutherford County Building Codes

The county department is open weekdays eight to half past four, with no permits issued after quarter past four. It covers unincorporated areas only, and separately supplies certified inspectors to the City of Eagleville.

Adopted codes. The county currently operates under the 2024 International Building and Residential Code series, adopted by the Board of Commissioners. That is a newer edition than the city's, which is a genuinely unusual situation and worth knowing about: two addresses a mile apart can be governed by codes six years apart.

The county quotes 2024 IRC Section R105.1 directly: any owner, or owner's authorised agent, who intends to construct, enlarge, alter, repair, move, demolish or change the occupancy of a building or structure shall first make application and obtain the required permit.

Working without one. The county applies the adopted provision that anyone commencing work requiring a permit before obtaining it pays twice the established fee. Permits also become invalid if work does not start within 180 days or if more than 180 days pass between inspections, and every building permit expires two years from issue.

Contractor requirement. The county states that a general contractor must be licensed and bonded with the State of Tennessee in order to obtain a building permit from the department, and it directs homeowners to verify credentials at verify.tn.gov.

Smyrna, La Vergne, and everywhere else

Smyrna and La Vergne operate their own city building departments and applications go to them rather than to the county. Eagleville is served by the county. Addresses in Woodbury, Shelbyville, Nolensville and Lebanon fall under Cannon, Bedford, Williamson and Wilson counties respectively, each with its own arrangements.

Establishing jurisdiction is a five-minute phone call and it prevents a lost week. Any contractor working the area regularly will know, and a contractor who is unsure which office covers your address is telling you something about how often they work here.

Tennessee contractor licensing, and the local wrinkle

Two thresholds apply, and the second one is specific enough to be genuinely useful.

The $25,000 threshold

The Tennessee Board for Licensing Contractors requires a contractor's licence before contracting, including bidding, offering to engage, or negotiating a price, for projects of $25,000 or more, where the party is acting as prime contractor, certain subcontractors, or construction manager. The requirement sits in Tennessee Code Annotated section 62-6-103, within the chapter beginning at 62-6-101.

Note the wording: the licence is required to bid, not merely to build. An unlicensed party quoting a $30,000 underpinning job is already outside the requirement at the point of quoting.

The $3,000 threshold, which applies here specifically

Separately, Tennessee requires a Home Improvement licence for residential remodelling projects from $3,000 to under $25,000, including materials and labour, in nine named counties: Bradley, Davidson, Hamilton, Haywood, Knox, Marion, Robertson, Rutherford, and Shelby.

This is the detail worth carrying away. A very large share of foundation work lands in that bracket: a crawl space encapsulation, a bowing wall reinforcement, a small pier job, an interior drain. In most Tennessee counties that work sits below any licence requirement. In Rutherford County it does not. Checking for a Home Improvement licence here is not an optional refinement, it is the check that applies to the majority of foundation jobs.

How to check

Search at verify.tn.gov, the Tennessee Department of Commerce and Insurance licence verification portal. You can search by individual name, business name, licence number, or city, and the record shows classification, status, expiry date, and monetary limit. Rutherford County's own building codes department points homeowners to that exact address. The Board publishes consumer guidance on hiring a contractor alongside the portal.

The monetary limit field is the one people miss. A licence is issued with a limit, and a contractor whose limit sits below the value of your project is not licensed for your project even though they hold a licence.

Engineered plans

There is no blanket rule requiring a sealed engineer's drawing for every residential foundation repair. Both jurisdictions enforce the IRC, which requires construction documents with a permit application and gives the building official the authority to require more. The city describes its department as overseeing residential and commercial construction beginning with review of plans.

In practice, whether an engineer's seal is required on your job is a case-by-case decision by the building official, and the honest way to find out is to ask the relevant department before scheduling: the city for addresses inside Murfreesboro, the county for unincorporated ones. Separately from any requirement, an engineer's report at roughly $340 to $780 buys an independent opinion on cause from somebody with no product to sell, which is often worth it on its own terms.

Footings and the code minimum

One code provision comes up constantly in foundation conversations. The residential code both jurisdictions enforce requires that exterior footings be placed at least twelve inches below the undisturbed ground surface. Rutherford County's own inspection checklist directs that footings, including slab-on-ground perimeters, be dug beneath the frost line to undisturbed soils.

The operative word on this ground is undisturbed. A footing bearing on placed fill rather than on native material is where a very large share of the settlement problems in this county begin, and it is why the depth question and the bearing question are not the same question.

The short version

• Inside Murfreesboro: city permit, 2018 IRC, $8 per $1,000 of value with a $50 minimum
• Unincorporated Rutherford County: county permit, 2024 IRC, double fee if you start without one
• Smyrna and La Vergne: their own city departments
• Licence check: verify.tn.gov, and check the monetary limit as well as the status
• $3,000 and up in this county: Home Improvement licence applies
• $25,000 and up anywhere in Tennessee: full contractor's licence required, including to bid