Bidet Installation Cost in 2026
Bidet installation cost in 2026 ranges from about $50 for a DIY bidet attachment to $2,500+ for a professionally installed standalone bidet — the spread is enormous because "bidet" covers three completely different products. A $40 attachment bolts onto your existing toilet in 20 minutes with no plumber; an electronic bidet seat needs an outlet nearby; a standalone bidet fixture needs new water and drain lines roughed into the floor. This guide breaks down all three with realistic parts-and-labor tables so you can pick the right option for your bathroom and budget.
The Three Types of Bidets
| Type | What it is | Total installed cost | Plumber needed? |
|---|---|---|---|
| Bidet attachment | Nozzle plate that mounts under your existing toilet seat | $50 - $150 | No — 20-minute DIY |
| Electronic bidet seat | Replacement toilet seat with heated water, dryer, remote | $300 - $1,000+ | Usually no (may need electrician) |
| Standalone bidet | Separate porcelain fixture next to the toilet | $1,000 - $2,500+ | Yes — new supply + drain lines |
Bidet Attachment Cost
The attachment is the gateway bidet: a slim plate with a retractable nozzle that sits between your toilet seat and bowl, teeing into the toilet's existing water supply line. No new plumbing, no electrical, no plumber.
| Item | Cost |
|---|---|
| Basic cold-water attachment | $30 - $70 |
| Dual-temp attachment (hot + cold hookup) | $70 - $150 |
| DIY installation | $0 (20-30 minutes, wrench included) |
| Plumber installation (if you insist) | $100 - $200 |
Cold-water-only models are the norm and perfectly comfortable for most people — the water warms to room temperature in the line. Dual-temp versions need a hot water connection at the sink, which adds a hose run but no real plumbing work. Honest take: a $60 attachment delivers 80% of the bidet experience. The main compromises are no heated seat, no air dryer, and manual pressure control.
Bidet Seat Cost
Electronic bidet seats (Toto Washlet is the famous brand; Brondell, Bio Bidet, and Kohler compete) replace your entire toilet seat with a heated, remote-controlled unit: warm water wash, heated seat, warm air dryer, deodorizer.
| Item | Cost |
|---|---|
| Entry-level electronic seat | $250 - $450 |
| Mid-range (heated water, dryer, remote) | $450 - $700 |
| Premium (auto open/close, nightlight, etc.) | $700 - $1,200+ |
| DIY installation | $0 (30-45 minutes) |
| GFCI outlet installation (if none nearby) | $150 - $350 |
The hidden cost is electricity: the seat needs a GFCI outlet within about 3 feet of the toilet. Many bathrooms don't have one there, and adding it is an electrician's job ($150-$350). Check your toilet shape too — seats come in round and elongated, and a mismatch looks and feels wrong. Measure bowl bolt spacing before ordering. For toilet basics, see our toilet installation cost guide and toilets hub.
Standalone Bidet Cost
A standalone bidet is a second porcelain fixture — the classic European setup. It needs its own hot and cold supply lines and its own drain connection tied into the waste stack, which usually means opening walls or floors.
| Item | Cost |
|---|---|
| Standalone bidet fixture | $200 - $800 |
| Faucet/trim kit | $80 - $300 |
| Plumbing rough-in (new bathroom) | $400 - $800 |
| Plumbing retrofit (existing bathroom) | $800 - $1,800 |
| Total professionally installed | $1,000 - $2,500+ |
Retrofits into existing bathrooms are where costs balloon: running a new drain line to the stack through finished floors is real plumbing work, often $800+ in labor alone. Standalone bidets make the most sense during a bathroom remodel when walls are already open — our bathroom rough-in cost guide covers what's involved. They also eat 2+ square feet of floor space, which small bathrooms can't spare.
Plumbing and Electrical Requirements
- Attachments: nothing beyond your existing toilet supply line. A standard 7/8" toilet supply connection is all it tees into.
- Electronic seats: GFCI outlet within reach of the cord (usually 3-4 feet). No plumbing changes.
- Standalone bidets: hot and cold 1/2" supply lines, a 1-1/2" or 2" drain with P-trap tied to the vented waste system, and shutoff valves. Same rough-in as a sink, essentially.
- Water pressure: all types need normal residential pressure (40-80 PSI). If your pressure is very low, spray performance suffers — see our low water pressure guide.
DIY vs Professional Installation
Attachments and most electronic seats are genuinely DIY — if you can change a toilet seat and connect a supply hose, you can install either in under an hour with no special tools. The one task worth hiring out is the GFCI outlet for an electronic seat if your panel work makes you nervous. Standalone bidets are firmly pro territory: drain tie-ins must be vented correctly and usually need a permit and inspection. A handyman-quality drain connection that isn't vented will cause slow drainage and sewer gas — the exact problems a permit inspection prevents.
Ongoing Costs to Expect
- Water use: negligible — a bidet wash uses about 1/8 gallon, far less than the toilet paper manufacturing water footprint it replaces
- Electricity (electronic seats): $2-$5/month for heated water and seat
- Filters: some seats have small water filters needing $15-$30 replacement every 6-12 months
- Toilet paper savings: most households cut usage 70-90%, saving $100-$200/year — the attachment pays for itself in months
- Maintenance: periodic nozzle cleaning (most self-clean) and descaling in hard-water areas with vinegar
Is a Bidet Worth It?
For most households: yes, starting with an attachment. It's a $50-$100 experiment with a 20-minute install and no downside — if you hate it (you won't), you're out lunch money. Upgrade to an electronic seat if you want the heated comfort features and have (or can add) an outlet. Choose the standalone fixture only during a remodel with space to spare. Want a pro to handle the plumbing side? Call (877) 762-1902.