Why Bathroom Size Matters for Cost
The two most common bathroom sizes in American homes are the 5×8 (40 sq ft) and the 5×10 (50 sq ft). These are typically the secondary or hall bathrooms found in homes built between 1950 and 2000. While they are small, they are not cheap to remodel — the cost per square foot for a small bathroom is actually higher than for a large one, because plumbing, electrical, and permit costs are largely fixed regardless of room size.
Understanding the cost breakdown for your specific bathroom size helps you set a realistic budget, evaluate contractor quotes, and avoid being overcharged or underserved.
5×8 Bathroom Remodel Cost (40 Sq Ft)
A 5×8 bathroom is the smallest standard full bathroom in most American homes. It typically contains a toilet, single vanity, and a tub/shower combo. Remodeling costs for this size bathroom range from $3,500 for a cosmetic refresh to $28,000 for a full luxury gut renovation.
Cost by Scope
- Cosmetic refresh (paint, fixtures, accessories): $3,000–$6,000
- Partial remodel (vanity, toilet, some tile): $5,500–$10,000
- Full remodel (everything new, mid-range materials): $7,000–$15,000
- Luxury remodel (premium tile, custom vanity, heated floors): $16,000–$28,000
What Drives Cost in a 5×8 Bathroom
- Tile selection: Builder-grade tile costs $2–$5/sq ft installed; designer tile runs $15–$40/sq ft
- Vanity: A stock vanity costs $300–$800; a custom or semi-custom vanity runs $1,500–$5,000
- Tub vs. walk-in shower: Converting a tub to a walk-in shower adds $3,000–$7,000 in labor and materials
- Plumbing moves: Moving a toilet or sink adds $1,500–$4,000 per fixture
- Regional labor rates: Labor in NYC or San Francisco can be 40–60% higher than the national average
5×10 Bathroom Remodel Cost (50 Sq Ft)
A 5×10 bathroom is slightly larger than the standard 5×8 and often found as the primary bathroom in older ranch-style homes or as an upgraded secondary bath. The extra 10 square feet allows for a larger vanity, a separate shower and tub, or additional storage — all of which add to the remodel cost.
Cost by Scope
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- Cosmetic refresh: $3,500–$7,000
- Partial remodel: $6,500–$12,000
- Full remodel (mid-range materials): $8,500–$18,000
- Luxury remodel: $20,000–$35,000
Popular Upgrades for a 5×10 Bathroom
- Walk-in shower conversion: adds $3,500–$8,000
- Double vanity upgrade: adds $1,500–$4,000
- Heated floor installation: adds $1,500–$3,000
- Freestanding soaking tub: adds $2,500–$6,000
- Custom tile shower surround: adds $2,000–$6,000
Cost Breakdown: Where Does the Money Go?
For a typical mid-range full remodel of a 5×8 or 5×10 bathroom, here is how the budget is typically allocated:
- Labor (demo, installation, plumbing, electrical): 40–60% of total
- Tile and flooring: 10–20%
- Vanity, sink, and faucet: 8–15%
- Toilet: 3–6%
- Shower/tub fixture: 5–12%
- Lighting and ventilation: 3–6%
- Permits and inspections: 2–5%
- Miscellaneous (caulk, grout, hardware, paint): 3–8%
Rule of thumb: Labor typically accounts for 50% of a bathroom remodel budget. If a contractor's quote is heavily weighted toward materials with very low labor, ask for an itemized breakdown — it may indicate unlicensed workers or shortcuts.
How to Get Accurate Quotes for Your Bathroom
The best way to know what your specific 5×8 or 5×10 bathroom remodel will cost is to get at least three quotes from licensed, insured contractors in your area. Costs vary significantly by region, contractor experience, and current material prices.
Pro Tip: Use our free Bathroom Remodel Cost Estimator to get an instant ballpark estimate before meeting with contractors. It takes 2 minutes and gives you a realistic range based on your bathroom size, scope, and finish level.
Frequently Asked Questions
How long does a 5×8 or 5×10 bathroom remodel take?
A cosmetic refresh takes 2–5 days. A full remodel typically takes 1.5–3 weeks, depending on permit requirements, tile drying time, and contractor availability. If you are moving plumbing or adding electrical circuits, add 3–5 days for inspections.
Can I remodel a small bathroom for under $10,000?
Yes — a mid-range partial remodel of a 5×8 bathroom (new vanity, toilet, tile floor, and fresh paint) can be done for $6,000–$9,000 with a licensed contractor. A full gut remodel under $10,000 is difficult to achieve with quality materials and licensed labor, but cosmetic updates and targeted upgrades are very achievable in that budget.
Does a bathroom remodel add value to my home?
Yes. According to Remodeling Magazine's 2025 Cost vs. Value report, a mid-range bathroom remodel returns approximately 66–70% of its cost in resale value. In high-demand markets, the ROI can be higher. A bathroom that is visibly dated or in poor condition can actually hurt your home's sale price, making remodeling a sound investment before listing.