Cost to Basement Bathroom Addition in Nashville, TN

$6,650–$19,000 in Nashville

5% below the national average · 0.95x cost multiplier

Homeowners in Nashville typically spend $6,650–$19,000 on a basement bathroom addition, about 5% below the national average. Labor rates and contractor availability in the Southeast region drive much of the price difference. Permit requirements and material delivery costs also play a role. See the full tier-by-tier breakdown below before requesting bids.

Cost Breakdown in Nashville

Line Item	Low	Mid	High
Cost per bathroom	$4275	$11875	$23750
Materials	$2,660	$5,700	$13,300
Labor	$3,800	$7,125	$11,400
Permits	$570	$760	$950
Total	$7,030-5% vs. national avg	$13,585-5% vs. national avg	$27,075-5% vs. national avg

Budget

Half bath (toilet and sink) added to unfinished basement near existing stack. Basic fixtures, standard tile, and minimal framing.

Mid-Range

Full 3-piece bath (toilet, sink, shower) with below-slab ejector or macerating toilet system, mid-range tile, standard vanity, and proper ventilation.

Premium

Full bath with tile shower, premium fixtures, custom vanity, below-slab plumbing with ejector pump, heated floor, and full exhaust ventilation system.

Material Options

Material prices below are national averages; availability in Nashville may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
Macerating (Upflush) Toilet System	$700-$1,800 unit only	No concrete breaking required, lower upfront cost, relocatable	Requires electricity, more maintenance, not ideal for high-use	Budget basement bathroom additions, retrofit situationsNo concrete breaking required, lower upfront cost, relocatable
Below-Slab Ejector Pump System	$1,500-$4,000 for pump and pit only	Code-compliant everywhere, gravity-fed to pump, quieter	Requires breaking concrete slab, higher upfront cost	Long-term reliable basement bathrooms, high-use situationsCode-compliant everywhere, gravity-fed to pump, quieter
Standard Ceramic Tile	$3-$10/sq ft materials only	Affordable, durable, waterproof, wide selection	Grout requires maintenance, cold underfoot	Budget to mid-range basement bathroomsAffordable, durable, waterproof, wide selection
Luxury Vinyl Tile (LVT)	$3-$8/sq ft materials only	Warm underfoot, waterproof, easy DIY install	Less premium look than real tile	Budget installs, DIY-friendly flooringWarm underfoot, waterproof, easy DIY install
Porcelain Tile (Floor and Shower)	$6-$25/sq ft materials only	Most durable, low water absorption, premium look	Higher cost, harder to cut and install	Premium basement bathrooms, shower surroundsMost durable, low water absorption, premium look

Other Projects in Nashville

Full Kitchen Remodel

Full Bathroom Remodel

Composite Deck Building

Back to national average for Basement Bathroom Addition

Nashville Estimate

Typical Range

$6,650–$19,000

vs. National Average

5% below national

Cost Multiplier

0.95x

Cost Per bathroom

$4275–$23750

Estimates apply Nashville's 0.95x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →