Foundation repair in Portland, OR
Compare up to three local Portland foundation contractors from Henry's vetted bench — piers, slab repair, drainage and structural cracks.
Portland's foundation problems trace back to a mix of unusual geology and a housing stock heavy on early-1900s bungalows and Old Portland-era homes with unreinforced concrete or cripple-wall basements. Much of the east side and the Willamette Valley floor sits on Willamette Silt, a fine-grained deposit laid down by the cataclysmic Missoula floods at the end of the last ice age; it drains poorly, expands and contracts with moisture, and settles unevenly under older footings in neighborhoods like Sellwood-Moreland, Alberta Arts, Laurelhurst and Hawthorne. Closer to the buttes and the West Hills, homes sit on or near Boring Lava flows, weathered basalt that can create hard, uneven bearing surfaces alongside pockets of soft residual clay. The West Hills themselves, including Portland Heights and parts of the Southwest hills above downtown, are steep, landslide-prone terrain where retaining walls, hillside foundations and slope stability are as much a concern as settlement. St. Johns and Multnomah Village, along with many close-in eastside neighborhoods, still have a large share of homes built before 1950 with cripple-wall basements or crawlspaces that were never bolted to their foundations, a serious vulnerability given Portland's exposure to a future Cascadia Subduction Zone earthquake. That risk has driven a steady, growing market for seismic retrofitting and foundation bolting, separate from but often bundled with traditional settlement repair. Layer on Portland's genuinely wet winters, with months of steady rain driving hydrostatic pressure against basement walls and saturating Willamette Silt until it heaves or slumps, and drainage work, French drains and sump systems become as central to the local foundation trade as piering and leveling. This guide covers what foundation repair, concrete leveling and mudjacking actually cost in Portland, how Portland Permitting & Development's permit process applies to structural work, what an Oregon CCB license does and doesn't confirm, and the neighborhood-by-neighborhood geology that shapes which repair a home actually needs.
The Henry Standard
Every foundation contractor in our network agrees to three things.
Show up
Call back. Keep appointments. And if something changes, communicate it.
Quote honestly
Clear scope, pier counts, and pricing in writing—so you know what you're agreeing to.
Finish the work
See the repair through, including the drainage and cleanup that was quoted.
Nothing revolutionary. Just the way we believe doing business should still be done.
How Henry matches you with Portland foundation contractors
- Step 1
Tell Henry what you're seeing
Your ZIP, the cracks or settling you've noticed, and how soon you need it looked at. Two minutes, four questions.
- Step 2
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Only three Henry Standard foundation contractors in your Portland-area ZIP get your request — pros we've checked for responsiveness, references and written estimates.
- Step 3
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What foundation repair costs in Portland
| Foundation inspection with written report | $0 - $600 |
| Structural engineer evaluation letter | $500 - $1,200 |
| Steel push piers (per pier) | $1,400 - $2,500 |
| Helical piers, additions/porches (per pier) | $1,500 - $2,600 |
| Cripple-wall seismic retrofit / foundation bolting | $4,500 - $12,000 |
| Wall anchors for bowing basement walls (per anchor) | $650 - $1,150 |
| Carbon fiber strips for bowing walls (per strip) | $450 - $850 |
| Foundation wall crack injection | $500 - $1,100 per crack |
| French drain / interior drainage and sump system | $4,500 - $13,000 |
| Exterior waterproofing and hillside drainage correction | $5,000 - $18,000 |
| Concrete leveling / slabjacking, driveway or walkway | $650 - $3,200 |
| Mudjacking, patio or garage slab | $500 - $2,600 |
| Full underpinning/pier project, bungalow or older home | $9,000 - $24,000 |
Ranges are general estimates gathered from homeowner-reported quotes in the Portland area, not an offer or a quote for your project.
Best time for foundation work in Portland
Portland's foundation season runs almost opposite to a frost-belt city: freeze depth is shallow, so cold rarely halts excavation, but the region's long, wet winters from roughly November through April keep crews busy with drainage, French drain and hydrostatic-pressure emergencies rather than dry-weather pier work. Willamette Silt soils across the east side, including Sellwood-Moreland, Hawthorne and Laurelhurst, absorb heavy winter rain and swell, then dry and shrink in Portland's warm, largely rainless summers, a seasonal cycle that opens and closes foundation cracks and drives seasonal callbacks. Spring, once the ground has saturated fully, tends to bring the year's biggest spike in bowing-wall and sump-pump-failure calls as hydrostatic pressure peaks. Summer and early fall, when soils are driest and excavation is easiest, are the best window for pier installation, underpinning and seismic retrofit work, and contractors book up quickly in July and August. In the West Hills and other steep Southwest Portland slopes, the wettest months also raise landslide and slope-stability risk, and homeowners on hillside lots should plan any retaining-wall or foundation work for the drier months when soil movement is lowest. Scheduling a foundation inspection in late winter, before the summer rush, generally gets a faster site visit and more time to compare seismic retrofit and drainage bids before crews are booked through fall.
Permits and HOA rules
Structural foundation work in Portland, including underpinning, push piers, helical piers, wall anchors and seismic retrofitting/foundation bolting, requires a building permit from Portland Permitting & Development (formerly the Bureau of Development Services), headquartered at 1900 SW 4th Avenue, Portland, OR 97201. Most permit applications, plan submissions, inspection scheduling and status checks now run through the city's online permitting portal, and contractors pulling a structural permit must be registered with the Oregon Construction Contractors Board (CCB) in good standing before the city will issue it. Seismic retrofit and foundation-bolting projects can often use Portland's simplified residential seismic retrofit permit path, which streamlines review for standard cripple-wall bracing and sill-plate anchoring compared with full underpinning plans, though a licensed engineer's design is still typically required for non-standard conditions or homes on steep West Hills lots. Excavation for underpinning or piers near a property line, an existing foundation, or on a slope in Southwest Portland's hillside zones may also trigger additional geotechnical or engineering review given the city's known landslide hazard areas. Oregon's statewide utility-locate service must be contacted before any excavation. Ask your contractor directly whether they are pulling the permit themselves under their own active CCB number, whether a seismic retrofit will use the city's expedited residential path or requires full engineered plans, and whether hillside or slope-stability review applies to your address, since skipping that step is a common source of stop-work orders and after-the-fact permit violations on Portland's steeper lots.
Licensing and insurance in Oregon
Oregon does not have a separate statewide residential general contractor license in the way some states do; instead, essentially all contractors performing home improvement or construction work, including foundation repair companies, must be actively licensed with the Oregon Construction Contractors Board (CCB), and homeowners can and should verify any contractor's CCB number, bond and insurance status directly through the CCB's online license lookup before signing a contract. Beyond basic CCB licensure, contractors who take on residential structural work such as underpinning, piering or seismic retrofitting should carry the CCB's residential endorsement, a distinct classification confirming the license covers residential construction rather than only commercial work, and it is worth asking specifically whether a contractor's CCB license includes that residential endorsement rather than assuming a general CCB number covers it. CCB registration confirms a contractor has passed a required exam, carries a surety bond and general liability insurance, and has no unresolved disciplinary history, but it does not by itself certify structural engineering competence; for underpinning plans, seismic retrofit designs beyond the city's standard prescriptive path, or any hillside foundation work in the West Hills, the design should be stamped by an Oregon-licensed structural or geotechnical engineer, whose license can be verified through the Oregon State Board of Examiners for Engineering and Land Surveying. In practice, vetting a Portland foundation contractor means confirming an active CCB license with the residential endorsement, checking their bond and insurance status on the CCB lookup, and asking for a named, licensed engineer's stamp on any underpinning, retaining-wall or non-standard seismic retrofit plan. Get all of that in writing, get at least three bids for anything beyond a single crack injection, and be wary of any contractor who can't produce an active CCB number or who proposes structural piering or hillside work without an engineer involved.
How to vet a foundation repair contractor in Portland
Confirm the company's Oregon CCB number through the Construction Contractors Board's online license lookup, and specifically ask whether their license carries the residential endorsement needed for structural home repair rather than only commercial work.
Ask whether they've worked on cripple-wall or unreinforced concrete basements typical of St. Johns, Multnomah Village and other close-in bungalow neighborhoods, since seismic retrofit and foundation bolting call for different expertise than pouring new footings.
If your home is in the West Hills or on another steep Southwest Portland slope, ask whether the contractor routinely coordinates with a geotechnical engineer for slope-stability and drainage review before proposing a repair plan.
Questions to ask before you hire
Is your CCB license active and does it include the residential endorsement? Can you show me your bond and insurance status on the CCB lookup? Who is pulling the Portland Permitting & Development permit, and will I get a copy of the permit number once it's issued?
If this involves seismic retrofit or foundation bolting, will you use the city's simplified residential retrofit permit path, or does my home need a full engineered plan? How many similar jobs have you completed in my specific neighborhood, given how much soil conditions vary between the east side's Willamette Silt and the West Hills' landslide-prone slopes?
Red flags in the Portland market
Watch for a contractor who can't produce an active CCB number with the residential endorsement, or who proposes hillside foundation or retaining-wall work in the West Hills without any engineer involved.
Be skeptical of a bid that ignores drainage entirely; given Portland's wet winters and poorly draining Willamette Silt, a settlement or bowing-wall repair that doesn't address hydrostatic pressure or grading is often an incomplete fix.
Be cautious of anyone who dismisses seismic retrofit as unnecessary for an older cripple-wall home in St. Johns or Sellwood-Moreland; given Cascadia earthquake risk, skipping foundation bolting on an unbolted older home is a real long-term liability.
What drives Portland foundation repair pricing
Portland's labor rates and the prevalence of older bungalow-era homes with cripple-wall basements push typical project costs above what you'd see in a newer-construction Sunbelt metro, especially once seismic retrofit work is added to a settlement repair.
Hillside lots in Portland Heights and other West Hills neighborhoods often carry a premium for access, shoring and slope-stability engineering that a flat east-side lot in Woodstock or Montavilla wouldn't need.
Drainage work is rarely optional here: French drains, sump systems and grading corrections are commonly bundled with settlement repair because of how much winter rain saturates Willamette Silt soils.
Permits, licensing and what to expect on a Portland job
Structural repairs need a permit through Portland Permitting & Development at 1900 SW 4th Avenue, and the contractor's CCB registration is checked before the city issues it.
Expect the crew to test soil moisture and drainage patterns around the foundation before finalizing a pier count, especially on Willamette Silt lots that swell seasonally, and expect a seismic retrofit quote to include sill-plate anchoring and cripple-wall bracing details rather than a vague lump sum.
On a hillside address, expect an added step: a geotechnical or engineering review of slope stability before the city signs off on excavation near a steep grade.
Special considerations for Portland's geology and housing stock
Willamette Silt, deposited by the ancient Missoula floods, underlies much of the east side and drains poorly, contributing to the settlement and moisture problems common in Sellwood-Moreland, Alberta Arts and Laurelhurst.
Boring Lava flows near the buttes and West Hills create hard, uneven basalt bearing surfaces alongside pockets of soft residual soil, complicating pier placement in those areas.
The West Hills and other steep Southwest Portland slopes carry real landslide risk, making retaining-wall design and slope-stability review as important as the foundation repair itself.
A large share of Portland's pre-1950 housing stock, especially in St. Johns, Multnomah Village and other close-in neighborhoods, has cripple-wall or unreinforced concrete basements that were never bolted to the foundation, a major seismic vulnerability given the region's Cascadia Subduction Zone exposure.
Areas Henry covers
Sellwood-Moreland · Alberta Arts District · Laurelhurst · St. Johns · Hawthorne · Multnomah Village · Portland Heights · Overlook · Woodstock · Richmond · Montavilla · Kenton · Concordia · Buckman · Sunnyside
Common questions
How much does foundation repair cost in Portland?
A typical pier job with 4 to 8 piers on a Portland bungalow runs about $9,000 to $24,000, while a single crack injection runs $500 to $1,100. Seismic retrofit and foundation bolting for an older cripple-wall basement typically runs $4,500 to $12,000 depending on the home's size and access.
Do I need a permit for foundation repair in Portland?
Yes. Structural work such as underpinning, piering, wall anchors and seismic retrofitting requires a building permit from Portland Permitting & Development, and the contractor must hold an active Oregon CCB license in good standing before the city will issue it.
What does an Oregon CCB license actually verify?
The Construction Contractors Board confirms a contractor passed a required exam, carries a surety bond and liability insurance, and has no unresolved disciplinary history. It doesn't certify structural engineering competence, so for underpinning or hillside work you should also confirm a licensed engineer stamped the design, and check whether the contractor's CCB license includes the residential endorsement.
Why is seismic retrofitting such a big part of Portland foundation work?
Many Portland homes built before 1950, especially in St. Johns, Multnomah Village and other close-in neighborhoods, have cripple-wall or unreinforced concrete basements that were never bolted to the foundation. Given the region's exposure to a future Cascadia Subduction Zone earthquake, foundation bolting and cripple-wall bracing have become a standard add-on to traditional settlement repair.
How does Portland's soil affect foundation problems?
Much of the east side sits on Willamette Silt, a poorly draining deposit left by the ancient Missoula floods that swells in Portland's wet winters and shrinks in dry summers, driving seasonal settlement. Areas near the buttes and West Hills sit on Boring Lava basalt with uneven bearing, and the West Hills themselves carry landslide risk on steep slopes.
When is the best time to schedule foundation repair in Portland?
Summer and early fall, when soils are driest and excavation is easiest, are the best windows for pier installation and seismic retrofit work, though contractors book up quickly. Late winter is a good time to schedule an inspection before the spring rush and before hydrostatic-pressure and drainage emergencies spike.
Is concrete leveling or mudjacking common in Portland?
Yes. Driveways, walkways and patios settle unevenly over Willamette Silt and Boring Lava soils faster than the structural foundation does, making concrete leveling and mudjacking a common, lower-cost service across neighborhoods like Woodstock, Montavilla and Kenton.
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