Updated July 5, 2026 · 7 min read
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.
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.
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.
