Rough-In Plumbing for Nashville Additions, ADUs & New Layouts
New bathrooms, basement finishes, ADUs, and kitchen islands — rough-in plumbing that passes inspection first time. — serving Nashville and surrounding Davidson County communities.
Rough-In Plumbing for Additions & New Layouts in Nashville
Nashville's ADU ordinance — one of the most permissive in the Southeast since Metro Council's 2022 expansion — has created a significant new category of investor plumbing work. Adding a secondary unit to a Davidson County property requires a full rough-in of kitchen and bath plumbing, Metro Water Services meter application (the long-lead item), and coordination with the main house water service to avoid cross-connection issues. We handle the full permit and coordination stack for Nashville ADU plumbing so investors can focus on the renovation — not the bureaucracy.
Why Nashville Properties Need This Service
- Metro Water Services new meter lead times of 4–8 weeks for ADU secondary connections
- Existing main house sewer capacity that may be undersized for added ADU fixture load
- Basement rough-ins requiring ejector pump systems when below the main sewer elevation
- Historic district coordination for additions to East Nashville, Germantown, or Sylvan Park properties
- Permit sequencing complexity — plumbing permit depends on building permit which depends on zoning approval
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
For Nashville ADU projects, start the Metro Water meter application the day your building permit is submitted — not after it's approved. The 4–8 week Metro Water lead time is the longest pole in the tent, and you can't receive a CO without the meter being in place.
ADU rough-in timeline in Nashville: Meter application (4–8 weeks, parallel), building permit (2–4 weeks), plumbing permit (1–2 weeks after building), rough-in execution (3–7 days). Start permit applications immediately on project start.
Pricing in Nashville
$2,500 – $8,000 for rough-in depending on scope, fixture count, and access
Nashville ADU rough-in (full kitchen + bath): $4,500–$9,000 depending on location, layout, and ejector pump requirements. Metro Water meter application fee separate. All quoted after site visit and plan review.
Flat-rate quotes. No hidden fees.
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Rough-In Plumbing for Additions & New Layouts in Nashville — FAQ
What is the process for getting a Metro Nashville plumbing permit for an ADU addition?
Serving Nashville, TN
Rough-In Plumbing for Additions & New Layouts in Nashville — Get Your Quote
Fast, permitted, flat-rate rough-in plumbing for additions & new layouts in Nashville. No surprises, investor pricing available.