Cost to Support Beam / Header Replacement in San Francisco, CA

$2,325–$23,250 in San Francisco

55% above the national average · 1.55x cost multiplier

Expect to pay $2,325–$23,250 for a support beam / header replacement in San Francisco, about 55% above the national benchmark. The West Coast region's contractor market and material costs account for most of this difference. The detailed breakdown below shows how budget, mid-range, and premium projects compare at San Francisco prices.

Cost Breakdown in San Francisco

Line Item	Low	Mid	High
Cost per linear ft	$465	$1085	$1860
Materials	$930	$3,875	$9,300
Labor	$2,170	$6,975	$15,500
Permits	$465	$1,240	$2,325
Total	$3,565+55% vs. national avg	$13,175+55% vs. national avg	$31,000+55% vs. national avg

Budget

Single door or window header replacement, 4-6 feet, wood LVL beam, temporary shoring only for the span above.

Mid-Range

Main carrying beam replacement in basement or crawl space, 12-16 feet, steel or LVL beam, engineer plan, temporary jacking and shoring.

Premium

Multiple beams or long-span ridge beam/header, steel I-beam installation, full structural engineering, crane rental, complete restoration of finished surfaces.

Material Options

Material prices below are national averages; availability in San Francisco may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
Dimensional Lumber (2x or 3-ply)	$10-$20 per linear ft materials only	Lowest cost, widely available, easy to work with, no special equipment needed	Limited span capability, susceptible to moisture and decay, not appropriate for long spans	Short window and door headers under 6 feet in non-critical applicationsLowest cost, widely available, easy to work with, no special equipment needed
LVL (Laminated Veneer Lumber)	$25-$50 per linear ft materials only	Stronger than dimensional lumber, stable and consistent, handles longer spans, available in standard sizes	More expensive than dimensional lumber, must stay dry, not attractive for exposed applications	Standard window and door headers, floor beams, and most residential beam replacementsStronger than dimensional lumber, stable and consistent, handles longer spans, available in standard sizes
Glulam (Glued Laminated Timber)	$30-$60 per linear ft materials only	Excellent strength-to-weight ratio, attractive natural wood appearance, available in very long spans	Requires protective finish if exposed, longer lead times for custom sizes, higher cost than LVL	Exposed beams in living spaces, long spans in open-concept designs, architectural applicationsExcellent strength-to-weight ratio, attractive natural wood appearance, available in very long spans
Steel I-Beam (W-Shape or Wide Flange)	$50-$150 per linear ft materials only	Maximum strength for span, does not rot or warp, slim profile for long spans, permanent solution	Requires skilled welders or bolted connections, heavy equipment often needed for placement, more expensive	Long basement spans, load-bearing wall removal projects, or where headroom is very limitedMaximum strength for span, does not rot or warp, slim profile for long spans, permanent solution
Parallel Strand Lumber (PSL)	$35-$65 per linear ft materials only	Very high density and strength, handles heavy point loads, consistent performance	More expensive than LVL, less common and fewer contractor familiarity	Column and post replacements, heavy point-load applicationsVery high density and strength, handles heavy point loads, consistent performance

Other Projects in San Francisco

Full Kitchen Remodel

Full Bathroom Remodel

Hardwood Floor Installation

Back to national average for Support Beam / Header Replacement

San Francisco Estimate

Typical Range

$2,325–$23,250

vs. National Average

55% above national

Cost Multiplier

1.55x

Cost Per linear ft

$465–$1860

Estimates apply San Francisco's 1.55x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →