Steel beams typically cost more than wood beams, but the installed price depends on span, load, access, and whether walls must be opened or supported. A straightforward residential beam project often runs $1,500-$5,000 for wood or $2,000-$7,000 for steel; longer spans and major structural changes can push either option higher.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Wood beam installed | $1,500 | $3,500 | $8,000 | Typical residential opening; excludes major finishes |
| Steel beam installed | $2,000 | $4,500 | $10,000 | Includes basic setting and handling |
| Wood beam material | $8/linear ft | $25/linear ft | $70/linear ft | Engineered lumber; size and grade vary |
| Steel beam material | $20/linear ft | $55/linear ft | $150/linear ft | Beam type, weight, and fabrication affect rate |
Assumptions: U.S. residential work with ordinary access, standard-grade materials, and no unusual foundation repairs.
Installed steel and wood beam prices by span
For a typical 10- to 16-foot opening in a house, an installed engineered wood beam often costs $1,500-$5,000. A steel beam for a similar opening commonly costs $2,000-$7,000 because it may require fabrication, delivery, lifting equipment, and a larger crew. These ranges assume basic framing changes and limited wall repair.
Wood usually has the lower installed price for short, lightly loaded spans, while steel can be economical when its smaller profile avoids extra construction. A complete project with shoring, wall removal, posts, permits, and finish repairs can exceed $10,000, regardless of beam material. Material-only rates are not comparable to installed quotes.
Beam selection is based on the load above it, span, deflection limits, and support conditions—not price alone. A structural engineer or qualified design professional may specify a beam size and bearing details before contractors can provide a reliable quote.
What beam material, labor, and equipment add to a quote
Quotes may combine material and installation or list each task separately. The table below gives broad residential allowances; unusual access, local labor rates, and finish work can change totals substantially.
| Quote item | Wood beam | Steel beam | Typical basis |
|---|---|---|---|
| Beam material | $8-$70/linear ft | $20-$150/linear ft | Grade, section, and fabrication |
| Installation labor | $600-$2,000 | $900-$3,000 | Two to four workers; roughly 8-24 hours |
| Shoring and equipment | $150-$700 | $300-$1,500 | Temporary supports, lifting, or access |
| Engineering and permits | $300-$1,500 | $300-$1,500 | Design review and local permit fees |
| Debris and finish repair | $200-$1,500 | $300-$2,000 | Removal, drywall, trim, and patching |
Labor and the work needed to expose and support the structure can cost as much as, or more than, the beam itself. Contractor labor may be priced at $75-$150 per worker-hour, but many firms quote the whole project.
How 12-foot spans and heavy loads change beam sizing
Span and load are major price drivers. A 12-foot opening carrying only roof framing may need a different beam from a 12-foot opening supporting a second floor, roof, and concentrated loads. Longer spans, heavy masonry, large point loads, or limited bearing at each end may require a deeper or heavier beam, added posts, or foundation reinforcement.
Once spans approach 16-20 feet, steel may gain an advantage where headroom is limited, but the design and lifting costs can rise. A built-up lumber beam may be thicker than steel for the same job, which can require changes to ceiling height or framing. Exact thresholds depend on loads and building layout, so a span alone cannot determine the required size.
Steel sections are sold by weight and shape, and custom cutting or drilling can add fabrication charges. Engineered wood pricing changes with ply count, depth, and grade. Quotes should identify the specified beam, length, bearing points, and whether posts or connectors are included.
Wood versus steel for installation time and access
Wood beams are often easier to carry through a house and can be assembled from multiple plies on site. Steel is heavier, and a one-piece beam may need a larger opening, extra workers, or a lift. Tight stairways, low ceilings, occupied rooms, and restricted outdoor access can add $300-$2,000 for handling or temporary removal work.
Access can erase a steel beam’s material-price advantage or make a multi-piece wood solution more practical. Basic installation may take one to three days, while structural shoring, inspections, and finish repairs can extend the schedule to several days or longer. Ask whether the labor estimate includes temporary supports and cleanup.
Three residential beam quotes with different scopes
A quote is useful only when its scope is clear. These examples show how length, material, and surrounding work affect a project total; they are illustrative rather than fixed market prices.
| Scenario | Beam and labor | Other work | Estimated total |
|---|---|---|---|
| 10-foot opening, wood | $350-$900 beam; $800-$1,500 labor | $400-$900 shoring and patching | $1,550-$3,300 |
| 14-foot opening, steel | $700-$1,800 beam; $1,200-$2,300 labor | $700-$1,600 equipment and finishes | $2,600-$5,700 |
| 18-foot opening, steel | $1,500-$3,500 beam; $2,000-$4,000 labor | $1,000-$3,000 posts, engineering, and repairs | $4,500-$10,500 |
Assumptions: Standard residential access and no major foundation work; permit and engineering charges vary by jurisdiction.
Which beam costs less after posts and finish work
Wood is commonly less expensive for short spans with moderate loads and adequate beam depth. Steel can make sense when a shallow beam is needed, when the design calls for a long clear span, or when reducing posts preserves an open floor plan. The relevant comparison is the full installed assembly: beam, columns, connections, footings, labor, and ceiling or wall repairs.
Compare designs that meet the same structural requirements rather than comparing material prices alone. A steel beam that needs a crane or new foundation support may cost more overall; a wood beam requiring multiple plies or a midspan post may lose its apparent savings. A professional should confirm that both options satisfy the same loads and deflection requirements.
Lower the beam bill by controlling scope and upgrades
Keep the opening dimensions and finish expectations consistent while requesting quotes. Ask contractors to separate the beam, labor, shoring, equipment, permit, debris, and repair allowances. This makes it easier to identify whether one price excludes a critical task or assumes a different beam specification.
Do not reduce beam size or omit required posts to save money; control costs through scope and logistics instead. Clear the work area, confirm access before delivery, and schedule drywall or trim repairs separately if doing so is practical. Avoid paying for premium finishes or painting within a structural quote unless those items are needed.
Where the design permits either material, request comparable wood and steel options from the engineer or contractor, including any added post or foundation work. Check local permit requirements before work begins, and confirm whether inspection fees and engineering revisions are included. A low bid that excludes shoring, disposal, or finish restoration may not be the lower final price.