How much do projects cost in Ontario, CA?
Ontario contractor pricing runs 5% above the national average. Every guide below is adjusted to local labor rates, permits and climate.
Local labor
Licensed Ontario contractors carry California workers' comp and prevailing wage pressure, and crews here quote roughly 5% above the national labor average. Demand in the Inland Empire market peaks in spring, so booking early usually beats a rush premium.
Permits & code
Ontario follows the California Building Standards Code, so most structural, electrical, plumbing and re-roof work needs a permit from the Ontario building department plus Title 24 energy compliance. Inland Empire jurisdictions add high-wind and fire-hardening requirements in foothill zones.
Climate
Ontario sits in a hot, dry inland climate with Santa Ana wind events, so expect wind-rated fasteners, fire-resistant materials and heat-tolerant finishes.
Construction costs in Ontario
Fence Installation cost in Ontario
$1,575 – $4,200
Roof Replacement cost in Ontario
$8,925 – $35,700
Kitchen Remodel cost in Ontario
$18,900 – $99,750
HVAC Replacement cost in Ontario
$5,775 – $18,900
Deck Building cost in Ontario
$4,620 – $12,600
Window Replacement cost in Ontario
$473 – $1,575
Bathroom Remodel cost in Ontario
$6,825 – $39,900
Interior Painting cost in Ontario
$1,260 – $6,300
Roof Repair cost in Ontario
$420 – $1,890
Siding Installation cost in Ontario
$7,350 – $23,100
Flooring Installation cost in Ontario
$1,680 – $6,825
Concrete Driveway cost in Ontario
$3,675 – $9,975
Plumbing Repair cost in Ontario
$189 – $893
Electrical Panel Upgrade cost in Ontario
$1,890 – $4,725
Solar Panel Installation cost in Ontario
$15,750 – $33,600
Water Heater Installation cost in Ontario
$1,260 – $3,675
Landscaping cost in Ontario
$3,150 – $15,750
Tree Removal cost in Ontario
$420 – $1,890
Garage Door Installation cost in Ontario
$945 – $3,675
Foundation Repair cost in Ontario
$2,310 – $8,925
Gutter Installation cost in Ontario
$945 – $2,940
Basement Waterproofing cost in Ontario
$3,150 – $12,600
Home Addition cost in Ontario
$47,250 – $147,000
Pool Installation cost in Ontario
$36,750 – $89,250
Asphalt Paving cost in Ontario
$1,890 – $4,410
Exterior Painting cost in Ontario
$3,150 – $9,450
Drywall Installation cost in Ontario
$1,575 – $3,675
Insulation Installation cost in Ontario
$1,890 – $5,670
Tile Installation cost in Ontario
$1,470 – $5,250
Countertop Installation cost in Ontario
$1,890 – $5,670
Cabinet Refacing cost in Ontario
$2,625 – $9,240
Hardwood Floor Refinishing cost in Ontario
$2,520 – $6,720
Carpet Installation cost in Ontario
$2,573 – $8,085
Stucco Repair cost in Ontario
$1,680 – $5,250
Pressure Washing cost in Ontario
$236 – $788
Sod Installation cost in Ontario
$2,835 – $6,930
Sprinkler System Installation cost in Ontario
$3,780 – $7,560
Retaining Wall Installation cost in Ontario
$3,938 – $9,450
Patio Installation cost in Ontario
$3,150 – $9,450
Epoxy Garage Floor Coating cost in Ontario
$1,890 – $5,670
Chimney Repair cost in Ontario
$473 – $3,675
Mold Remediation cost in Ontario
$1,512 – $3,780
Septic System Installation cost in Ontario
$6,300 – $21,000
Sewer Line Replacement cost in Ontario
$5,040 – $15,750
Water Well Drilling cost in Ontario
$5,250 – $13,650
Sump Pump Installation cost in Ontario
$630 – $2,625
Water Softener Installation cost in Ontario
$1,260 – $3,675
Standby Generator Installation cost in Ontario
$9,450 – $18,900
EV Charger Installation cost in Ontario
$840 – $2,625
Smart Home Installation cost in Ontario
$1,260 – $4,200
Home Security System Installation cost in Ontario
$1,008 – $3,780
Ductwork Replacement cost in Ontario
$3,938 – $9,450
Heat Pump Installation cost in Ontario
$6,930 – $14,175
AC Repair cost in Ontario
$158 – $1,575
Furnace Repair cost in Ontario
$158 – $1,470
Boiler Installation cost in Ontario
$4,725 – $11,550
Radon Mitigation cost in Ontario
$945 – $2,625
Asbestos Removal cost in Ontario
$3,150 – $12,600
Water Damage Restoration cost in Ontario
$1,680 – $5,040
Basement Finishing cost in Ontario
$29,400 – $75,600
Garage Conversion cost in Ontario
$25,200 – $63,000
ADU Construction cost in Ontario
$157,500 – $315,000
Sunroom Addition cost in Ontario
$25,200 – $84,000
New Home Construction cost in Ontario
$346,500 – $924,000
Demolition Services cost in Ontario
$6,300 – $23,625
Excavation and Grading cost in Ontario
$7,875 – $23,625
Junk Removal cost in Ontario
$378 – $756
Gutter Cleaning cost in Ontario
$189 – $473
Snow Removal cost in Ontario
$630 – $1,890
Appliance Repair cost in Ontario
$126 – $683
Home Inspection cost in Ontario
$368 – $735
Insurance costs in Ontario
Loans costs in Ontario
Legal costs in Ontario
Construction Lawyer cost in Ontario
$3,938 – $9,450
Contractor Dispute Attorney cost in Ontario
$5,250 – $11,550
Mechanics Lien Attorney cost in Ontario
$525 – $3,675
Construction Defect Lawyer cost in Ontario
$11,550 – $25,200
Construction Contract Review Attorney cost in Ontario
$420 – $2,625
Construction Accident Lawyer cost in Ontario
$1,575 – $12,600
Permit and Zoning Attorney cost in Ontario
$2,835 – $6,300
HOA Dispute Attorney cost in Ontario
$2,363 – $5,250
Property Insurance Claim Lawyer cost in Ontario
$525 – $6,300
Real Estate Closing Attorney cost in Ontario
$630 – $2,625
Cities near Ontario
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