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Monumental Construction Inc.General contractor in Ontario, CA

Monumental Construction Inc. is a general contractor at 939 E Francis St, Ontario, CA 91761, rated 5.0 from 4 Google reviews. Open Monday to Friday and Sunday.

Ontario, CA0 paid placements in any rankingHow we rank

Call (909) 281-1910

Key facts

Key facts about Monumental Construction Inc.
Address939 E Francis St, Ontario, CA 91761Get directions
Phone(909) 281-1910
HoursMonday to Friday: 7 AM – 8:30 PM; Sunday: 7 AM – 8:30 PM
Google rating5.0 from 4 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • General Contractingmain tradeGoogle main category

Service area

Serves Ontario and 11 towns within 25 miles: Chino, Upland, Montclair, Rancho Cucamonga, Claremont, Los Serranos, Pomona, Eastvale, Jurupa Valley, Chino Hills and La Verne.

Based in Ontario, CAView on map

Opening hours

Opening hours for Monumental Construction Inc.
DayHours
Monday7 AM – 8:30 PMevening
Tuesday7 AM – 8:30 PMevening
Wednesday7 AM – 8:30 PMevening
Thursday7 AM – 8:30 PMevening
Friday7 AM – 8:30 PMevening
SaturdayClosed
Sunday7 AM – 8:30 PMevening
  • Open evenings (after 6 PM)
  • Open Saturdays — no
  • Open Sundays

Typical general contracting prices

Typical general contracting prices
JobLowTypicalHigh
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.

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

5.0from 4 Google reviews

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Questions about Monumental Construction Inc.

What are Monumental Construction Inc.’s hours?

Monumental Construction Inc. is open Monday to Friday and Sunday. Its listed hours are Monday to Friday, 7 AM – 8:30 PM; Sunday, 7 AM – 8:30 PM. It is closed on Saturdays, and on Sundays 7 AM to 8:30 PM. Hours come from the business listing; holiday hours may differ.

What areas does Monumental Construction Inc. serve?

Serves Ontario and 11 towns within 25 miles: Chino, Upland, Montclair, Rancho Cucamonga, Claremont, Los Serranos, Pomona, Eastvale, Jurupa Valley, Chino Hills and La Verne. 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.

What do Google reviews say about Monumental Construction Inc.?

Monumental Construction Inc. has a rating of 5.0 from 4 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Monumental Construction Inc.?

Call Monumental Construction Inc. on (909) 281-1910. The business is at 939 E Francis St, Ontario, CA 91761. Ask for a written estimate before any work starts.

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