Cost to Basement Support Column Replacement in Seattle, WA (2026)
If you’re budgeting a basement support column replacement in Seattle, most projects run $1,832-$4,886, 22% above the $2,500 national average. What moves that number most is usually one thing: Number of Columns. On its own it can swing the cost by $800 - $3,000 per column, so that’s the decision to slow down on before you sweat the smaller stuff.
Easiest place to save: Get a structural engineer's assessment ($300-$800) before hiring a contractor - you'll know exactly what's needed and can get accurate quotes
In the West Coast (where Seattle sits): Highest labor costs, seismic requirements may add cost.
$1,832-$4,886 in Seattle
22% above the national average · 1.22x cost multiplier
In Seattle, a basement support column replacement runs $1,832 to $4,886 on average - about 22% above what homeowners pay nationwide. The West Coast market's labor costs account for most of the gap, with material pricing and local permitting fees adding to the spread. Use the cost table below to compare budget, mid-range, and premium options side by side.
Cost Breakdown in Seattle
| Line Item | Low | Mid | High |
|---|---|---|---|
| Materials | $228 | $570 | $1,368 |
| Labor | $769 | $1,537 | $3,203 |
| Permits | $114 | $171 | $342 |
| Total | $1,111+23% vs. national avg | $2,506+22% vs. national avg | $5,483+22% vs. national avg |
Budget
Single adjustable steel lally column replacement, existing footing in good condition
Mid-Range
1-2 column replacements with new concrete footings, structural engineering review
Premium
Multiple column replacements, new footings, beam upgrades, decorative column wraps, engineered plans
Material Options
Material prices below are national averages; availability in Seattle may shift costs slightly.
| Material | Cost/Unit | Best For |
|---|---|---|
| Adjustable Steel Lally Column | $50-$150/column | Unfinished basements, standard replacementsMost common, adjustable height, affordable, proven reliability |
| Permanent Steel Column (Concrete-Filled) | $100-$250/column | Permanent installations, higher load requirementsStronger than adjustable, no moving parts, permanent solution |
| Structural Wood Post (6x6 or larger) | $75-$200/column | Finished basements where appearance matters, lower loadsEasy to work with, can be stained or painted, traditional look |
| Decorative Column Wrap (over steel) | $150-$500/column | Finished basements, columns in living spacesHides the steel column, matches finished basement aesthetics, various styles |
Other Projects in Seattle
Seattle Estimate
Typical Range
$1,832-$4,886
vs. National Average
22% above national
Cost Multiplier
1.22x
This 1.22x estimate prices Seattle labor from BLS Occupational Employment and Wage Statistics (May 2025) and applies a lighter regional adjustment to materials and permits, which vary less by metro than labor does. Actual bids vary by contractor, project scope, and timing.
See national average costs →