How Much Does Double Garage Door Installation Cost in Redwood City, CA? (2026)

Average Cost

$2,349–$5,619

Materials

$1,295–$3,580

Labor (Peninsula)

$512–$742

Labor rates in Peninsula are +28% compared to Sacramento Metro baseline.

A double garage door installation covers the standard two-car garage opening (16x7 or 16x8 feet). These larger doors are heavier and require dual torsion springs, heavier gauge tracks, and reinforced struts to prevent sagging. The project includes full removal of the old door system, installation of the new door panels, tracks, springs, and all hardware, plus connection to the existing opener. Insulated steel doors with decorative window inserts are the most popular choice in NorCal subdivisions, combining curb appeal with energy efficiency.

Redwood City is located in San Mateo County (Peninsula). Climate best by government test — revitalized downtown with older bungalows and new condos. The local utility provider is PG&E.

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City

Doors

Materials Included

Double Garage Door (16x7, insulated steel, with windows)1 unit

$1,000–$3,000

Heavy-Duty Track Set (vertical & horizontal)1 set

$80–$150

Dual Torsion Spring Set (high-cycle rated)1 set

$90–$180

Reinforcement Struts (anti-sag, 16 ft)2 each

$70–$140

Hinges, Rollers, Brackets, Cables & Bottom Seal1 kit

$55–$110

Labor(Peninsula +28%)

Garage Door Technician4h @ $83–$122/hr

$333–$486

Helper4h @ $45–$64/hr

$179–$256

Contractor Markup30%

0%Avg 30%100%

Materials

$1,295–$3,580

Labor

$512–$742

Markup

$542–$1,297

Estimated Total Cost

$2,349 – $5,619

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California Building Code

California Building Code requires double garage doors to include reinforcement struts to prevent wind damage and door sag. The opener must include UL 325 safety reversing sensors. Fire-rated doors are required between the garage and living space.

Project Timeline

Old Door Removal

45-60 min

Safely release spring tension, disconnect the opener, remove the large door panels (may require two workers), and take down old tracks, springs, and the torsion bar assembly.

Track & Spring Installation

1-1.5 hrs

Mount vertical tracks, install the torsion bar and dual spring assembly on the header, hang horizontal tracks, and install reinforcement struts across the top panel.

Door Panel Assembly

1-1.5 hrs

Install each panel from bottom to top, attach hinges and rollers, feed rollers into the tracks, and connect lift cables to the bottom fixtures.

Spring Tensioning & Opener Connection

30-45 min

Wind both torsion springs to the calculated turns, connect the opener arm to the top bracket, test door balance and auto-reverse sensors, and adjust travel limits.

Materials Breakdown

Material	Qty	Unit	Unit Cost	Total
Double Garage Door (16x7, insulated steel, with windows)	1	unit	$1000–$3000	$1,000–$3,000
Heavy-Duty Track Set (vertical & horizontal)	1	set	$80–$150	$80–$150
Dual Torsion Spring Set (high-cycle rated)	1	set	$90–$180	$90–$180
Reinforcement Struts (anti-sag, 16 ft)	2	each	$35–$70	$70–$140
Hinges, Rollers, Brackets, Cables & Bottom Seal	1	kit	$55–$110	$55–$110

Double Garage Door Installation in Redwood City — FAQ

How much does a double garage door cost installed?+

A standard insulated steel double garage door runs $1,500-$3,800 installed in the Sacramento area. Carriage-house style doors with decorative hardware range from $3,000-$6,500. Premium wood overlay doors can reach $8,000+.

Should I get one double door or two single doors?+

A single double door is less expensive and has a cleaner look. Two single doors offer the advantage of independent operation — if one spring breaks, you can still use the other door. Two singles also look great on carriage-house style homes.

How heavy is a 16-foot garage door?+

A standard insulated steel 16x7 door weighs 150-250 lbs depending on insulation and glass. This is why dual torsion springs and reinforcement struts are essential — they prevent the door from sagging and ensure smooth operation.

What R-value should my garage door be?+

For Sacramento's climate, an R-value of 6.5-12 is sufficient for most homes. If the garage is attached to the house or used as a workshop, consider R-16 to R-18 for better temperature control.