Foundation Repair in Bellevue & the Eastside
ECD diagnoses foundation problems with a structural engineer first, then repairs them: crack repair, underpinning with steel piers, new footings under failing posts, beam repair in crawlspaces and drainage correction. You need it when floors slope, doors bind or cracks widen. Eastside repairs typically cost $3,000–$35,000; full underpinning or replacement runs $40,000–$180,000.
Reviewed by Daniel R. Whitcomb, PE · WA PE 48217
Why diagnose before you repair a foundation?
A sloping floor can come from a settling footing, a crushed post in the crawlspace, a sagging girder, rotted sill plates or simply a house that was framed out of level decades ago. Each has a different fix and a very different cost. Companies that sell one repair method tend to find the problem their method solves. An engineer who is not tied to a product finds the actual cause.
On the Eastside, the causes follow the landscape. Much of the area sits on dense glacial till that supports footings well when it stays drained, but water concentrated by downspouts, failed footing drains or hillside seepage softens the soil next to the foundation. Hillside lots in Issaquah, Newcastle, Somerset and Mercer Island add slope movement. Older crawlspace houses add wood posts on concrete blocks that rot or shift over time.
What does ECD's foundation repair service include?
- Engineering evaluation with floor-level survey, crack mapping and crawlspace or basement inspection.
- A written report: cause, recommended repair and what can wait, with photos.
- Repair design and stamped drawings when a permit is required.
- Crack repair by epoxy or polyurethane injection, with monitoring where movement is in question.
- Underpinning with steel push piers or helical piers, and lifting where it is safe to do so.
- New concrete footings and posts, girder repair or replacement, sill plate and rim joist repair.
- Drainage correction: downspout tightlines, footing drains and grading away from the house.
What foundation repair does not cover
Geotechnical investigation on landslide-hazard sites, which a geotechnical engineer performs; we coordinate it. Interior finish repair from movement, such as drywall cracks, is quoted separately once the structure is stable.
How does a foundation repair project run?
- Engineering evaluationOne visit, 1–2 hours
Floor levels measured, cracks mapped, crawlspace or basement inspected.
- Report and repair options1–2 weeks
Cause identified, options priced, urgency explained.
- Repair design and permit2–6 weeks
Drawings and calcs for underpinning or new footings; permit where needed.
- Excavation and repair2 days–4 weeks
Piers driven or footings poured; posts and beams replaced.
- Drainage and backfill2–5 days
Water sources that caused the problem are corrected.
- VerificationAt completion and as needed
Floor levels re-measured; engineer's completion letter issued.
How much does foundation repair cost on the Eastside?
| Repair | Typical cost | On-site time |
|---|---|---|
| Engineering evaluation and written report | $800–$2,500 | 1 visit |
| Crack injection, per crack | $800–$2,500 | 1 day |
| Crawlspace posts and footings, per location | $1,200–$3,500 | 1–3 days |
| Drainage correction around the house | $8,000–$30,000 | 1–2 weeks |
| Steel pier underpinning, per pier | $2,500–$4,500 | 1–2 weeks total |
| Partial footing replacement | $25,000–$80,000 | 2–5 weeks |
| Full foundation replacement | $90,000–$180,000 | 6–12 weeks |
When does foundation work need a permit?
Crack injection and minor drainage work generally do not need a building permit. Underpinning, new footings, foundation replacement and structural beam replacement do, with stamped engineering. Sites in mapped steep slope, landslide or erosion hazard areas often require a geotechnical report before the permit is issued; Bellevue, Issaquah, Newcastle and Mercer Island all regulate critical areas through their land use codes. The King County permitting site covers unincorporated areas. Our Permit Estimator includes a foundation repair option.
A foundation repair we engineered and built
PROJECT · MERCER ISLANDSettling corner underpinned with helical piers on a sloped lotTen helical piers, a new footing drain and downspout tightlines stopped movement in a daylight-basement house.Foundation questions
Foundation repair FAQ
How much does foundation repair cost in Bellevue?
Most Bellevue foundation repairs cost $3,000 to $35,000: crack injection, new crawlspace posts and footings, or drainage correction. Underpinning with steel piers usually runs $2,500 to $4,500 per pier, with 6 to 14 piers on a typical project. Partial or full foundation replacement is $25,000 to $180,000. An engineering evaluation, $800 to $2,500, tells you which applies.
Which foundation cracks should I worry about?
Thin vertical shrinkage cracks in concrete are common and usually harmless. Cracks that are wider than about a quarter inch, that are wider at one end than the other, that show one side offset from the other, or that run diagonally from window corners deserve an engineer's look, especially if they are growing or paired with sticking doors and sloping floors.
What is the difference between helical piers and push piers?
Both are steel shafts that transfer the house's load past weak soil to a firmer layer. Push piers are driven using the house's own weight as resistance and suit heavier structures. Helical piers are screwed in with plates that bear on soil and can be load-tested as they go, which suits lighter houses and sloped sites. The engineer picks based on soil, load and access.
Does homeowners insurance cover foundation repair?
Usually not for gradual settlement, soil movement or deterioration, which most homeowner policies exclude. Damage from a sudden covered event, such as a burst pipe that washes out soil, may be covered. Check your policy and talk with your agent. We provide the engineering report your insurer will ask for if you file a claim.
Should drainage be fixed before or after structural repair?
Both, in the same project. Water is often what softened the soil in the first place, so a structural repair without drainage correction can see new movement nearby. We usually stabilize the structure first, then tightline downspouts, restore or add footing drains and regrade, so the repair and the cause are handled together.
Free estimate · Bellevue office
Talk to the engineer before you commit to a plan
A site visit, a scope conversation and a written budget range, at no cost.