(734) 748-4831
TN Licensed & Insured

Rough-In Plumbing for Nashville Home Additions & Expansions

New bathrooms, basement finishes, ADUs, and kitchen islands — rough-in plumbing that passes inspection first time.

Get a Free Quote Call (734) 748-4831

About This Service

Precise rough-in plumbing for home additions, basement finishes, or reconfigured layouts, including supply and drain lines to support new bathrooms, kitchens, or expansions.

What's Included

  • Full DWV and supply rough-in for new bathrooms, kitchens, and additions
  • ADU (accessory dwelling unit) plumbing for Nashville's growing secondary unit market
  • Basement bathroom rough-ins using ejector pump systems where needed
  • Coordinated scheduling with framing crews for zero-delay integration
  • Stamped drawings and permit support for Davidson County building department
  • Wet bar, laundry, and outdoor kitchen rough-ins for investor upgrades

Common Issues We Solve

  • Missing cleanouts in original plumbing that complicate additions
  • Insufficient main line capacity for added fixture load
  • Basement drain lines requiring ejector pump systems
  • Joist boring conflicts with structural members
  • Long Metro Water meter lead times for ADU water service

Pricing Guide

$2,500 – $8,000 for rough-in depending on scope, fixture count, and access

All pricing is quoted flat-rate before work begins. No hidden fees.

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Questions? Call Now

(734) 748-4831

24/7 Emergency Service Available

Service Areas

Our Process

1

Plan Review & Code Check

We review your architect's drawings and confirm all rough-in locations comply with Metro Nashville IPC amendments — including proper vent routing, trap distances, and minimum fixture clearances.

2

Permit Application

We handle all plumbing permit applications with Davidson County or the relevant municipality. Turnaround is typically 5–10 business days for standard additions.

3

Rough-In Installation

DWV and supply lines are installed per engineered drawings. All penetrations through fire-rated assemblies are properly firestopped per code.

4

Rough Inspection

Metro Codes inspector signs off on rough-in before any walls are closed. We coordinate inspection scheduling to fit your GC's critical path.

5

Trim-Out

After insulation, drywall, and tile are complete, we return for trim-out — installing all fixtures, making final connections, and pressure-testing the system.

Rough-In Plumbing for Additions & New Layouts — Frequently Asked Questions

What's involved in adding a bathroom to a Nashville investment property's basement?
Basement bathroom rough-ins in Nashville require an ejector pump system in most cases because the drain lines run below the main sewer line. The ejector pit receives waste and a sewage pump lifts it up to the main drain line. Code requirements include: properly vented ejector system, check valve on the discharge line, and sealed pit with gas-tight cover. The electrical for the pump must also be coordinated. For Nashville investors adding a basement suite for ADU income, this is a common upgrade — budget $3,000–$5,000 for the ejector system plus rough-in labor.
Can you coordinate rough-in with framing and other trades to avoid timeline delays?
Yes — this coordination is the critical value we provide for investor clients. Rough-in must happen in a very specific window: after framing is complete and inspected, but before insulation and drywall are installed. We work directly with your GC to identify this window and commit to a specific start date, not a range. We also provide your framing crew with joist boring specifications in advance so they can drill the right holes in the right locations rather than having to fix them later. Botched framing coordination is the #1 cause of rough-in delays on Nashville flips.
What permits are required for plumbing additions in Davidson County?
Any new plumbing work requiring rough-in — new bathrooms, kitchen additions, laundry rooms, or basement finishes — requires a Metro Nashville plumbing permit. The permit application requires a description of work, fixture count, and for larger additions, a scaled plan showing rough-in locations. We handle the permit application as part of our scope. Typical review time is 5–10 business days in Davidson County; Williamson and Rutherford County permit offices often turn around in 3–5 days. We build permit timeline into your project schedule so it doesn't catch you off guard.
Do you handle ADU (accessory dwelling unit) plumbing in Nashville?
Yes — and this has become a significant part of our work as Nashville investors add secondary units for income. Metro Nashville's ADU ordinance allows detached and attached secondary units in most residential zones. ADU plumbing typically requires a separate water meter application with Metro Water Services (4–8 week lead time — this is the long pole), sewer connection permit, and full rough-in for kitchen and bath. We handle the Metro Water meter application coordination, which many plumbers miss, causing costly delays late in the project.

Rough-In Plumbing for Additions & New Layouts Across Nashville

We provide rough-in plumbing for additions & new layouts throughout the Nashville metro area. Select your location for area-specific pricing, local plumbing challenges, and scheduling information.

Nashville Davidson County
East Nashville Davidson County
Brentwood Williamson County
Franklin Williamson County
Murfreesboro Rutherford County
Hendersonville Sumner County
Mt. Juliet Wilson County
Spring Hill Williamson/Maury County
Smyrna Rutherford County
Antioch Davidson County
Madison Davidson County
Nolensville Williamson County

Ready to Schedule Rough-In Plumbing for Additions & New Layouts?

Get a flat-rate quote for rough-in plumbing for additions & new layouts in your Nashville-area property. No surprises, all work permitted.

Get a Free Quote Call (734) 748-4831
Licensed & Insured in Tennessee No Hidden Fees Investor & Volume Pricing 24/7 Emergency Response