Mario Custom BuilderGeneral contractor in Napa, CA
Mario Custom Builder is a general contractor at 4086 Byway E, Napa, CA 94558. Open Monday to Friday.
Napa, CA0 paid placements in any rankingHow we rank
Key facts
| Address | 4086 Byway E, Napa, CA 94558Get directions |
|---|---|
| Website | mcbuilder.org |
| Hours | Monday: 9 AM – 5 PM; Tuesday to Friday: 8 AM – 5 PM |
Trades
Each trade shows the evidence we matched it on.
- General Contractingmain tradeGoogle main category
Service area
Serves Napa and 11 towns within 25 miles: Sonoma, Boyes Hot Springs, American Canyon, Saint Helena, Fairfield, Vallejo, Suisun, Vacaville, Petaluma, Rohnert Park and Novato.
Based in Napa, CAView on map
Opening hours
| Day | Hours |
|---|---|
| Monday | 9 AM – 5 PM |
| Tuesday | 8 AM – 5 PM |
| Wednesday | 8 AM – 5 PM |
| Thursday | 8 AM – 5 PM |
| Friday | 8 AM – 5 PM |
| Saturday | Closed |
| Sunday | Closed |
- Open evenings — no
- Open Saturdays — no
- Open Sundays — no
Typical general contracting prices
| Job | Low | Typical | High |
|---|---|---|---|
| Kitchen remodelPer project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 1.04 Pacific factor (2025 Cost vs. Value Report) | $15,240 | $28,190 | $43,470 |
| Bathroom remodelPer bathroom: typical range of customer-reported remodels. US national range × 1.06 Pacific factor (2025 Cost vs. Value Report) | $7,050 | $12,880 | $18,720 |
Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.
Questions about Mario Custom Builder
What are Mario Custom Builder’s hours?
Mario Custom Builder is open Monday to Friday. Its listed hours are Monday, 9 AM – 5 PM; Tuesday to Friday, 8 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.
What areas does Mario Custom Builder serve?
Serves Napa and 11 towns within 25 miles: Sonoma, Boyes Hot Springs, American Canyon, Saint Helena, Fairfield, Vallejo, Suisun, Vacaville, Petaluma, Rohnert Park and Novato. The list is based on the business's location and the usual service radius for general contracting. Confirm your address is covered when you call.
How do I contact Mario Custom Builder?
The business is at 4086 Byway E, Napa, CA 94558. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
Own Mario Custom Builder? Claim this profile.
Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.