Updated July 5, 2026 · 8 min read
A master bathroom retreat is usually the largest and most expensive bathroom in the house to remodel — more square footage, more fixtures (often a double vanity, a soaking tub, and a separate shower), and higher-end finishes than a hall or guest bath. That combination pushes the typical budget well above a standard bathroom project.
This guide uses This Old House's 2026 master-bathroom-specific cost data, cross-checked against Bob Vila's 2024 primary-bathroom figures, to show what a realistic budget looks like by tier and by line item. We also state Boise Bath's own published range for a master suite in the Treasure Valley. If your bathroom is on the smaller side instead, our small bathroom remodel cost guide is the better starting point.
Key takeaways
- This Old House (2026) prices a national master bathroom remodel at $12,005–$24,715 (average ~$18,360); Bob Vila (2024) prices a primary bathroom wider, at $15,000–$55,000.
- By tier: basic refresh $12,005–$17,516, mid-range $15,648–$20,130, premium/luxury $18,920–$24,362+ (This Old House, 2026).
- Plumbing is typically the single largest line item at roughly $5,545, ahead of cabinetry (~$2,929) and drywall/insulation (~$2,338) (This Old House, 2026).
- Boise Bath's published range for a Master Bathroom Remodel is $28,000–$60,000+, above the national tiers — reflecting a full custom layout as standard.
- A typical master bathroom remodel takes 3–8 weeks from planning to final walkthrough (This Old House, 2026).
The short answer
This Old House (2026) puts a master bathroom remodel nationally at $12,005–$24,715, with an average around $18,360. Bob Vila's 2024 bathroom-remodel breakdown prices a primary/master bathroom higher, at $15,000–$55,000, reflecting the wider range of scope a master suite can cover — from a cosmetic refresh to a full spa-style rebuild.
Both figures are national; Boise Bath's own published range for a Master Bathroom Remodel is $28,000–$60,000+, which sits at the upper end of both national datasets. That gap is consistent with the premium tier below, and with the Treasure Valley labor and material cost pressures we cover in our Boise bathroom remodel cost guide.
Cost by tier
This Old House (2026) breaks a master bathroom remodel into three tiers based on scope.
| Tier | Typical cost | What it includes |
|---|---|---|
| Basic refresh | $12,005–$17,516 | Surface-level updates without layout changes |
| Mid-range renovation | $15,648–$20,130 | Walk-in tiled shower, quartz counters, upgraded lighting, slip-resistant flooring |
| Premium / luxury remodel | $18,920–$24,362+ | Custom layout, spa features, heated flooring, marble tile, designer fixtures |
Source: This Old House (2026). Boise Bath's published range for a Master Bathroom Remodel is $28,000–$60,000+, above these national tiers.
Where the money goes: line items
This Old House (2026) also breaks a typical master bathroom budget down by trade and material category, which is useful for seeing where a remodel budget concentrates.
- Plumbing: $5,545 (This Old House, 2026)
- Cabinetry: $2,929 (This Old House, 2026)
- Drywall and insulation: $2,338 (This Old House, 2026)
- Tiling: $1,326 (This Old House, 2026)
- Shower/tub combo: $1,258 (This Old House, 2026)
- Flooring: $1,114 (This Old House, 2026)
Cost by square footage
Size matters almost as much as tier. This Old House (2026) prices out a 100-square-foot and a 150-square-foot master bathroom at both the cosmetic and full-renovation level.
| Size | Cosmetic refresh | Full renovation |
|---|---|---|
| 100 sq ft | $12,005 | $19,166 |
| 150 sq ft | $16,708 | $24,715 |
Source: This Old House (2026). A typical master bathroom remodel takes 3–8 weeks from planning to final walkthrough, per the same source.
Boise Bath's published range
Boise Bath's own published range for a Master Bathroom Remodel is $28,000–$60,000+, which reflects a double vanity, a soaking tub, natural stone, and a fully custom layout as the standard scope rather than a cosmetic refresh. NerdWallet's 2026 general bathroom data (roughly $70–$250 per square foot, up to $80,000+ for extensive high-end projects) is consistent with the top of this range once a larger master footprint and premium finishes are factored in.
If your bathroom is closer to a hall or guest bath in size and scope, our small bathroom remodel cost guide covers that budget range instead — the two projects rarely share a similar total.
3-year workmanship warranty
Every master bathroom remodel we build is backed by a 3-year workmanship warranty, in addition to the manufacturer warranties on the fixtures and materials we install.
Frequently asked questions
- How much does a master bathroom remodel cost in Boise?
- Boise Bath's published range for a Master Bathroom Remodel is $28,000–$60,000+. For national context, This Old House (2026) prices master bathroom remodels at $12,005–$24,715 (average ~$18,360), while Bob Vila (2024) prices a primary bathroom at $15,000–$55,000. Boise Bath's range sits at the upper end because it includes a fully custom layout, natural stone, and premium fixtures as standard.
- What is the biggest cost driver in a master bathroom remodel?
- Plumbing is typically the single largest line item, at roughly $5,545 on average, ahead of cabinetry (~$2,929) and drywall/insulation (~$2,338), per This Old House (2026). Layout changes that reposition fixtures or move a wall drive plumbing costs up further.
- How long does a master bathroom remodel take?
- This Old House (2026) puts the typical timeline at 3–8 weeks from initial planning to final walkthrough, depending on scope — a cosmetic refresh lands toward the shorter end, while a premium remodel with a custom layout or structural changes lands toward the longer end.
Sources
- This Old House — Master Bathroom Remodel: Complete 2026 Guide
- Bob Vila — Bathroom Remodel Cost: A Budgeting Guide (2024)
- NerdWallet — Bathroom Remodel Cost in 2026
Claims and figures are drawn from the sources above and provided for general guidance; your project may vary. Photography is illustrative of design concepts. For a fixed price on your specific bathroom, request a free estimate.
