Updated July 17, 2026 · 10 min read
By Boise Bath — bathroom & shower remodeling in Boise & the Treasure Valley
A small bathroom — a hall bath, powder room, or half bath under about 50 square feet — costs less in raw dollars than a master suite, but not proportionally less. Plumbing, permits, and skilled labor cost roughly the same whether the room is 30 square feet or 130, which is why a small bathroom remodel can still run into five figures.
This guide gathers cited 2023–2026 figures from This Old House and Bob Vila to show what a small bathroom or powder room remodel costs by tier and by size, plus Boise Bath's own published range for a comparably sized bath in the Treasure Valley. For a full-size master suite instead, see our master bathroom remodel cost guide.
Key takeaways
- This Old House (2026) prices a small bathroom remodel at $3,000 (cosmetic refresh) to $18,000+ (full renovation); Bob Vila (2023) prices it at $1,500–$15,000, averaging $6,500.
- A powder room or half bath costs less than a small full bathroom in both datasets — roughly $1,200–$4,000 vs. $2,500–$6,000, per Bob Vila.
- By footprint, This Old House (2026) prices a 30 sq ft bath at $11,900–$15,100 and a 48 sq ft bath at $19,000–$24,100.
- Boise Bath's closest published comparable is a Guest Bathroom Remodel at $15,000–$28,000 — there is no separate published rate for a powder room.
- Fixed costs like plumbing rough-in, permits, and labor don't shrink proportionally with room size, which is why small bathrooms still often run into five figures.
The short answer
This Old House (2026) prices a small bathroom remodel nationally from $3,000 for a cosmetic refresh up to $18,000 or more for a full renovation. Bob Vila's small-bathroom-specific 2023 data lands in a similar band: a national average of $6,500, with a $1,500–$15,000 range depending on scope.
A powder room or half bath — no tub or shower — costs meaningfully less than a small full bathroom in both datasets, which is why we separate the two below rather than quoting one blended number.
Cost by tier
This Old House (2026) breaks a small bathroom remodel into three tiers.
| Tier | Typical cost |
|---|---|
| Basic refresh | $3,000–$8,000 |
| Mid-range update | $8,000–$18,000 |
| Premium renovation | $18,000 or more |
Source: This Old House (2026). A mid-range bathroom remodel returns roughly 80% of its cost as resale value on average, per the same source.
Cost by bathroom type and size
Bob Vila's 2023 small-bathroom guide and its separate 2024 general bathroom-remodel guide both break costs out by room type; the two pieces give slightly different figures for the same categories, so we show both below rather than picking one.
| Bathroom type | Bob Vila (2023, small-bath guide) | Bob Vila (2024, general guide) |
|---|---|---|
| Half bath / powder room | $2,250–$3,000 | $1,200–$4,000 |
| Small full bathroom | $4,500–$6,000 | $2,500–$6,000 |
| Small primary bathroom | $6,000–$8,000 | — |
Sources: Bob Vila small-bathroom-remodel-cost guide (2023), Bob Vila bathroom-remodel-cost guide (2024). The two Bob Vila pieces vary somewhat because they survey different project sets — use both as a range rather than a single figure.
Cost by square footage
This Old House (2026) also prices out specific small bathroom footprints, which is useful if you know your room's dimensions.
- 5×6 ft (30 sq ft): $11,900–$15,100 (This Old House, 2026)
- 6×6 ft (36 sq ft): $14,300–$18,100 (This Old House, 2026)
- 5×8 ft (40 sq ft): $15,900–$20,100 (This Old House, 2026)
- 6×8 ft (48 sq ft): $19,000–$24,100 (This Old House, 2026)
- Per-square-foot components: cabinetry ~$27, tiling ~$33, flooring ~$13, painting ~$13 (This Old House, 2026)
Boise Bath's published range
Boise Bath does not publish a rate specifically for a small hall bath, but our published range for a Guest Bathroom Remodel — $15,000–$28,000 — is the closest comparable line item, since a guest bath is typically similar in size to the small bathrooms priced above. NerdWallet's 2026 general figure of $70–$250 per square foot is consistent with that range for a 40–50 square-foot room once local labor and materials are factored in, as described in our Boise bathroom remodel cost guide.
If your bathroom is a full master suite rather than a hall or guest bath, our master bathroom remodel cost guide is the better starting point — the two projects rarely land in the same budget range.
3-year workmanship warranty
Every bathroom we remodel, regardless of size, is backed by a 3-year workmanship warranty, in addition to the manufacturer warranties on the fixtures and materials we install.
Cost across the Treasure Valley
There is no independent dataset that prices a small bathroom remodel at the city level anywhere in the Treasure Valley — the honest starting point is the same national range everywhere, which you fit your own room and finish choices into. The cited figures above (This Old House's $3,000–$18,000+ by tier and Bob Vila's $1,500–$15,000 band) apply in Meridian or Caldwell just as they do in Boise; what actually shifts a number is the age and condition of the house behind the walls, not the ZIP code.
We keep a per-city cost page for each of the larger Treasure Valley markets so you can read the national data alongside notes on local housing stock: Meridian, Nampa, Eagle, Caldwell, Kuna, and Star. A small hall bath in a newer Meridian or Kuna build tends to hold to the lower half of the national range because the bones rarely add surprises, while an older Boise bungalow bath is likelier to turn up the kind of hidden repairs that push a small room up its range.
Financing a small bathroom remodel
Because even a small bathroom often lands in five figures once fixed plumbing and labor costs are counted, financing is a common way to keep the project on the timeline you want rather than the one your savings dictate. Our guide to how bathroom remodel financing works walks through the trade-offs between a home-equity option, an unsecured renovation loan, and a promotional 0% period, and you can review the financing options we work with directly.
Designing a small bathroom to control cost
In a small room, design choices move the budget as much as fixture selection does. Working within the room's existing footprint and plumbing wall — rather than reconfiguring it — is the single most reliable way to keep a small bath at the lower end of its range, since it avoids the plumbing-relocation labor that fixed costs otherwise force.
A few of our companion guides go deeper on getting the most out of a tight footprint: the best tile for small bathrooms for finishes that make a room read larger, the small-bathroom design mistakes worth avoiding before demo, galley bathroom ideas and layouts and the 5×8 bathroom layout for the two most common small-bath footprints, and standard bathroom dimensions for the clearances every layout has to respect.
Frequently asked questions
- How much does a small bathroom remodel cost in Boise?
- Boise Bath's closest published comparable is a Guest Bathroom Remodel at $15,000–$28,000. For national context, This Old House (2026) prices a small bathroom remodel at $3,000 for a cosmetic refresh up to $18,000 or more for a full renovation, while Bob Vila (2023) puts the average at $6,500 with a $1,500–$15,000 range.
- Is a powder room cheaper to remodel than a small full bathroom?
- Yes. Bob Vila's figures put a half bath or powder room at $1,200–$3,000 depending on the source, versus $2,500–$6,000 for a small full bathroom with a tub or shower — the plumbing fixtures in a full bath are what add the cost.
- Why does a small bathroom still cost so much to remodel?
- Plumbing rough-in, permits, and skilled labor cost roughly the same whether a bathroom is 30 square feet or 130 square feet, so a small bathroom doesn't scale down proportionally. This Old House (2026) prices even a 30-square-foot bathroom at $11,900–$15,100 for a full renovation.
- Does a small bathroom remodel cost more in Boise than in Meridian or Nampa?
- There is no independent city-level dataset for any Treasure Valley market, so the honest answer is the same national range everywhere — This Old House (2026) at $3,000–$18,000+ by tier, Bob Vila (2023) at $1,500–$15,000. What actually varies is the housing stock: a newer Meridian, Kuna, or Star build tends to hold to the lower half of the range, while an older Boise home is likelier to surface hidden repairs that push the number up.
- What is the cheapest way to remodel a small bathroom?
- Keeping the existing layout and plumbing wall in place is the single biggest lever, because it avoids the plumbing-relocation labor that otherwise drives the cost up. From there, choosing efficient finishes and a straightforward footprint — the kind covered in our best-tile-for-small-bathrooms and small-bathroom design guides — keeps a small bath toward the lower end of its national range rather than the top.
Sources
- This Old House — Small Bathroom Remodel Cost: 2026 Price Guide
- Bob Vila — How Much Does a Small Bathroom Remodel Cost? (2023)
- 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.
