For real-estate investors & house flippers

Pre-Sale & Investor Property Tunneling for Plumbing & Foundation Access

On a flip the dig is a line in the budget before it is a hole in the ground. A failed hydrostatic test, scaled-shut cast iron, or a foundation note can eat the margin or stall the exit. What you need first is a number you can underwrite, and a date you can hold your buyer to.

Get a Tunneling Quote (210) 816-0034

A hand-dug access pit and tunnel under a slab, fast access for a pre-sale repair.

Investors don't need hand-holding, they need a scope they can price and a crew that hits the date. We scope the access end to end, shoring and site restoration included, so it drops into your project budget as one line instead of an allowance. Then we dig it on a schedule built around your close. We come out of foundation repair, which means we can also tell you when the thing the inspection flagged is a crack you disclose rather than a repair you buy. That conversation is worth more than any discount on the dig.

“Pre-sale and investor property tunneling for plumbing/foundation access”“Fast access excavation for hydrostatic and cast-iron repairs”“Scoped, priced access you can underwrite”

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 survive a buyer's inspection. We open the access so your plumber re-pipes before you list, not during the option period.

Hydrostatic test failure

The test fails and the deal is contingent on a fix. We tunnel to the leak so the repair and the re-test both land inside the option window.

Underwriting before you commit

You need the dig priced to decide whether the deal still works. We scope it clearly enough to go into the spreadsheet.

Pre-sale foundation repair

An interior pier or a leveling job has to clear before the sale. We dig the access and coordinate the repair on a tight calendar.

Finished floors already in

Rehab is done and the floors are down. Tunneling keeps the finished product intact instead of paying twice to fix a pipe.

What you get

How we work with you.

Two things you get here that a general excavator won't give you. Speed, and a scope priced before you commit. We schedule the dig around your close and we backfill the same way, so the property is sale-ready instead of leaving an open pit for the buyer's inspector to find. And because we actually repair foundations, we won't sell you access for a repair the house doesn't need. If the scare is cosmetic we say so and you keep the cash. Before a repair line goes in the budget at all, have the floor elevations shot. Until there is a number on the movement, a crack with no measured movement behind it belongs on the disclosure and stays out of the repair budget.

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
A straight 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.

VEL

Velocity

Hand-tunneling is the slow part of any plumbing or foundation job. We staff the bore to the schedule and hand over an open, ready trench instead of billable hours spent waiting on a shovel.

PRC

Precision

We dig to the plan. Depth, width and pitch are shot before the first spade and verified as we go, so the pipe run or the pier lands where the drawing says.

SAF

OSHA safety

Cave-in exposure is real. 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 for working width, clean floor and walls, and true pitch. Backfill goes in compacted lifts so the ground above settles right.

STD

Standards & compliance

Texas 811 is called and lines are located before we dig. We sell the access, not the licensed pipe work. 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 runs under a slab, where the belly usually hides, and how much room it takes to set a fitting and lie down to make a joint. So we open the bore wider at the repair, shore it, keep it dry, light it, and get out of the way. Years of watching the pipe work happen is what tells us how wide to make it.

We open the work area wider where the repair is, leaving 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 off open, dry, and workable to your licensed plumber, foundation crew, or engineer.

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, which issues Tradesman, Journeyman, Master, and Inspector licenses. Motmot sells under-slab tunneling and access excavation, and partners with your licensed plumber for the pipe repair. 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.

How fast can you dig the access?

Fast enough to protect a close. Tell us the run, the depth, and the deadline and we'll size the crew to hit it. Speed is most of why investors call us instead of a general excavator.

Can you give me a price I can underwrite?

Yes. We scope the access by length, depth, shoring, backfill and site restoration, and give you one number you can drop into the project budget before you commit.

The inspection flagged the foundation. Is it real?

Often it isn't as bad as the report sounds. Because we run foundation crews, we can shoot the floor elevations and put a number on the movement, which is what tells you whether it's a structural fix or a cosmetic crack to disclose. A free second opinion can save a flip's whole repair line.

Do you leave the property sale-ready?

Yes. Backfill and compaction in lifts, then the site restored, so a buyer's inspector doesn't find an open pit or a sinking patch where we dug.

Do you work with my plumber?

Yes. You keep your plumber for the licensed pipe repair, we provide the access and the backfill. Or we coordinate the scheduling so the two trades aren't tripping over each other on a short calendar.

From real jobs