For real-estate investors & house flippers
Pre-Sale & Investor Property Tunneling for Plumbing & Foundation Access
On a flip, time is the budget. A failed hydrostatic test, scaled-shut cast iron, or a foundation issue found before closing can stall a deal — unless the access gets dug fast and priced clean. That's the lane we run in.
Investors and flippers don't need hand-holding; they need a number, a date, and a crew that hits both. We tunnel the access for the plumbing or foundation fix your project needs, give you a clear scope so you can underwrite it, and keep the dig on a schedule that protects your close. We come out of foundation repair, so we can also tell you straight whether what the inspection flagged is a real structural problem or a crack that's cosmetic — useful when you're deciding what to actually spend on.
When you call us
The jobs that need a tunnel.
Cast-iron sewer on an older flip
A 1960s house with original cast iron won't pass a buyer's inspection. We open the access so your plumber re-pipes before you list.
Hydrostatic test failure
The test fails and the deal's contingent on a fix. We tunnel to the leak fast so the repair and re-test happen inside your option period.
Pre-sale foundation repair
An interior pier or a leveling job is needed to clear the sale. We dig the access and coordinate the repair on a tight timeline.
Underwriting a clean number
You need the dig priced before you commit. We scope the access clearly so it goes straight into your numbers.
Avoiding interior demo on a finished flip
Floors are already done. Tunneling keeps the finished product intact so you don't re-do work to fix a pipe.
What you get
How we work with you.
Two things investors get from us that a generic excavator won't: speed and honesty. We schedule the dig to protect your close and we backfill the same way, so the property is sale-ready, not left with an open pit and a soft patch. And because we actually repair foundations, we won't talk you into access for a repair the house doesn't need — if the inspection scare is cosmetic, we'll say so, and you keep the cash. Get a free second opinion before you spend.
SCOPE OF WORK
- Access dug fast, on a schedule that protects your close
- Clear, underwritable scope and pricing up front
- Backfill and compaction so the property is sale-ready
- Honest read on whether a flagged 'foundation problem' is real
- Coordination with your plumber for the licensed repair
How every bore is held
Velocity, precision, OSHA, quality control — and the standards behind them.
Tunneling is the slow, risky part of a plumbing or foundation job. We run it like a discipline, not a dig.
Velocity
Hand-tunneling is the slow part of a plumbing or foundation job. We staff the bore to the schedule, dig in clean shifts, and hand the plumber an open, ready trench so their billable hours aren't spent waiting on a shovel.
Precision
We dig to the plan — depth, width, and pitch shot before the first spade, then verified as we go. The pipe run, the pier location, or the engineer's access point lands where the drawing says it should, the first time.
OSHA safety
Tunneling and trenching carry real cave-in exposure. We work to OSHA Subpart P excavation practice — protective systems, safe access and egress, spoil set back from the edge, water and air managed, and daily competent-person inspection.
Quality control
Every bore is checked against the drawing: width to work in, clean floor and walls, true pitch, and a documented hand-off. Backfill is placed and compacted in lifts so the ground — and anything on it — settles right.
Standards & compliance
Texas 811 is called and lines are located before we dig. We sell the access, not the licensed pipe work — your plumber stays the plumber. Permits, locates, and clean documentation come standard.
Why a foundation crew digs a better tunnel
We come out of foundation repair, and we've dug alongside plumbers for years — so we know how to dig it.
We know how a sewer line under a slab actually runs, where the belly usually hides, and how much room a plumber needs to set a fitting, swing a saw, and lie comfortably to make a joint. We open the work area wider where the repair is, shore it, keep it dry, and light it — then get out of the way. The plumber shows up to a tunnel they can work in, not a hole they have to fight. That's the difference between a bore dug by people who've only moved dirt and one dug by a foundation crew who has watched the pipe work happen a hundred times.
- We open the work area wider where the repair is — room to set, slope, and joint
- Shored, dry, and lit so the plumber works in a tunnel, not a hole
- We dig it and back-fill it; your licensed plumber does the pipe work
From locate to backfill
How an under-slab tunnel runs.
Locate & plan
We call Texas 811, locate utilities, and shoot the depth, width, and pitch the repair needs before a spade hits the ground.
Open the entry
A compact entry pit goes in at the chosen point — usually outside the foundation — so the floors above stay whole.
Tunnel to the work
We hand-tunnel to the pipe run, pier location, or access point, widening the bore where the repair happens.
Shore & hand off
The bore is shored and inspected, then handed to your licensed plumber, foundation crew, or engineer — open, dry, and workable.
Backfill in lifts
Once the repair passes, we place backfill in compacted lifts so the slab, drive, or walk above settles correctly.
Clean & document
Spoil hauled, site restored, and the access and backfill documented for your file or warranty.
LICENSING & SAFE DIGGING
In Texas, plumbing repairs are regulated by the Texas State Board of Plumbing Examiners — Tradesman, Journeyman, Master, and Inspector licenses. Motmot sells under-slab tunneling and access excavation; we partner with your licensed plumber for the pipe repair itself. And before any dig, Texas 811 is contacted at least two business days ahead so gas, water, and utility lines are located first.
Industry FAQ
Investors & flippers tunneling — questions answered.
From real jobs
What this access looks like on real jobs.
Tunneling for other industries
Plumbing companies
Under-slab tunneling for plumbers.
See plumbing companies tunneling →Foundation repair
Foundation repair tunneling.
See foundation repair tunneling →Structural engineers
Engineer-access excavation for under-slab evaluations.
See structural engineers tunneling →GCs & remodelers
Under-slab access for remodel plumbing.
See gcs & remodelers tunneling →Property mgmt & multifamily
Low-disruption under-slab tunnel access for rental and multifamily properties.
See property mgmt & multifamily tunneling →Realtors & inspectors
Under-slab access for repair work before closing.
See realtors & inspectors tunneling →Restoration & insurance
Access excavation for slab leak and water-damage repairs.
See restoration & insurance tunneling →Commercial facilities
Commercial under-slab tunneling for plumbing and structural access.
See commercial facilities tunneling →Backfill & cleanup
Tunnel backfill and cleanup.
See backfill & cleanup tunneling →Need under-slab access? Tell us the run.
We'll scope the tunnel, dig it to plan, shore it, and back-fill it clean — so your licensed repair goes in smoothly and the floors above stay whole.
Now booking free inspections in Central Texas.