Foundation Repair in Bellevue

A crack in a wall, a corner that has dropped, posts under the floor gone soft, a sill never bolted down, water standing against the footing: Bellevue Foundation Repair starts with what the foundation is doing, then picks the repair. On a steep or wet lot, the city’s critical areas code can decide what a job needs before any method does.

Our customers are homeowners in Bellevue, Mercer Island and Newcastle. In Bellevue, 46.7 percent of homes predate 1980, about 34 percent of all homes went up in the 1960s and 1970s, and the median house dates from 1982. Footings, crawlspaces and drains of very different ages sit side by side, which is why we look before we recommend.

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Split-level house on a sloped lot with low mossy retaining walls beside the entry steps, tall Douglas firs behind and a wet green lawn

Settling and piering
Foundation crack repair
Crawlspace posts and beams
Seismic bolting and bracing
Foundation drainage

Example project

Grey poured-concrete interior wall with one vertical crack closed with a bead of material and three small clear plastic injection ports along it

One vertical crack sealed from inside the basement

Example project

Home: House in Bellevue with a poured-concrete basement wall
Original request: A crack running up the wall that leaves a damp mark after heavy rain
Crack: One vertical crack, most of the height of the wall
Method: A surface bead along the crack with small ports set along it
Not included: Outside drainage and interior paint
Cost: $700

In this example, the owners of a house in Bellevue find a vertical crack running most of the way up a basement wall. After a hard rain a damp patch shows along its lower end.

See the full example and more projects

Foundation settlement and piering Foundation crack repair Crawlspace post and beam repair Seismic retrofit and foundation bolting Foundation drainage

Our foundation repair services

Drive head and torque motor on a small excavator turning a steel helical shaft into a narrow trench beside a house foundation

Diagonal crack in a painted concrete foundation wall, with moss at the soil line and a damp stain below the crack

Foundation settlement and piering

A house that has sunk or tilted shows it in floors that run downhill, doors that no longer close square and cracks that open wider at one end. The work starts with why the footing or the soil under it is moving. Depending on the answer, that can mean steel piers driven or screwed down to firmer ground, or a footing enlarged to an engineer’s design. Bringing a house back to level is a separate question, and we do not promise it.

Foundation crack repair

A crack in a foundation wall can be a shrinkage line that never changes or a sign of movement behind it. The shape of the crack, what is around it and whether water comes through tell us which. From there the choice is between injecting or sealing the crack and having an engineer look first.

Low view inside a crawlspace of timber posts on concrete pads holding wood girders and joists, with a vapor barrier partly covering the soil

Steel anchor bolt with a square plate washer fastening the wood sill plate to a concrete stem wall in a crawlspace

Crawlspace post and beam repair

A floor that bounces or sags over a crawlspace points to the posts, pads, girders and sill plate under it. The repair replaces or re-supports whatever has failed, and the damp that rots wood has to be dealt with too, or the new framing faces the same conditions.

Seismic retrofit and foundation bolting

Without fastening, a house can ride off its foundation in an earthquake while the short walls beneath it fold. Bolting the sill plate down and bracing cripple walls with plywood are two common retrofits. They are meant to help and do not make a house earthquake-proof.

Narrow trench along the outside of a concrete foundation wall with a perforated drain pipe laid in washed gravel at footing level

Foundation drainage

Water standing against a footing, a wet crawlspace or soil washing out from under a wall can move a foundation. Gutters and downspouts, the grade around the house and the footing drains inside or out are looked at together, since fixing one without the others can leave the water with somewhere to go.

Foundation repair costs

These ranges cover hired labor and materials for foundation work on houses in Bellevue, Mercer Island and Newcastle. Pier counts, wall lengths and house sizes are typical sizes, not a price for your project. Permit costs and any engineer’s design are not included. The low end is a simple, easy-to-reach job. The open top end is where hard access, deeper work or damage found once the area is opened come in.

Settlement and piers

Per pier$1,800 – $3,500+
One corner of the house, 3 to 4 piers$5,500 – $14,000+
One side of the house, 6 to 8 piers$11,000 – $28,000+
Whole house, 10 to 14 piers$18,000 – $49,000+

What is included

Steel piers are driven or screwed down to firmer soil and the footing is carried on them. The count and depth come from a written plan drawn after the house has been looked at, and any engineer’s design or permit is settled first.

Get a free quoteSee an example project

Foundation crack repair

One crack, up to 10 feet$350 – $1,000+
Three to four cracks, each up to about 10 feet$1,200 – $3,500+
One wide or structural crack$900 – $2,500+

What is included

The crack is looked at to see what it is doing, then sealed from the inside with epoxy or polyurethane injection where that suits it. A crack that is wide or still moving is looked at more closely before anything is sealed.

Get a free quoteSee an example project

Crawlspace posts and beams

Replace one post$350 – $850+
Three to five posts$1,800 – $5,500+
New beam and posts under one room$3,000 – $9,000+

What is included

Rotted or sagging posts, pads and girders under the floor are replaced or supported on new footings. Damp and drainage under the floor are checked at the same visit.

Get a free quoteSee an example project

Seismic bolting and bracing

Bolting and bracing, house about 1,200 sq ft$4,500 – $10,500+
Bolting and bracing, house about 2,000 sq ft$7,500 – $17,500+
Bolting and bracing, house about 3,000 sq ft$11,000 – $26,000+

What is included

The house is bolted to its foundation and short crawlspace walls are braced with plywood. This is meant to help keep the house on its foundation in an earthquake; it does not make a house earthquake-proof. It is done from the crawlspace and may need a permit.

Get a free quoteSee an example project

Foundation drainage

Inside drain along one wall, about 30 ft, no sump pump$1,500 – $3,800+
Inside drain around the whole perimeter, with a sump pump$7,000 – $18,000+
Outside footing drain, one side about 30 ft$3,000 – $4,000+
Outside footing drain, whole perimeter$12,000 – $16,000+

What is included

Water is collected at the footing, outside in the ground or inside in a channel, and sent to a sump or a safe outlet. The right choice depends on where the water is getting in.

Get a free quoteSee an example project

Ranges are 2026 estimates, not quotes. Your written estimate is free and comes after we have seen the foundation.

Signs your foundation needs a look

Any single sign may be innocent. According to HUD’s inspection guide, shrinkage cracking is rarely serious and minor settlement cracking harms a building only when moisture keeps leaking through it. So watch for change, and write down what you see before you phone anyone.

Cracks in a foundation wall that taper, run in steps through block joints or run sideways
Doors and windows that stick or have started to leave a gap
A floor that slopes, or bounces underfoot
Gaps between the wall and the floor, or between a porch or addition and the house
Damp, mold or soft, dark wood in the crawlspace
Water standing along the foundation after rain

Write down where each sign is and take dated photos with a level or tape in the frame. Mark the end of a crack with a pencil and date it. If it has not moved when we visit, that is useful to know; if it has, that is more useful still.

HUD guide to inspecting existing buildings (rehabilitation)

When an engineer is involved

When settlement is the issue, HUD’s foundation guide wants its cause established by a structural or geotechnical engineer who specializes in this work, and repairs carried out by experienced contractors under that engineer. It is federal rehab guidance, and it is why cause comes before method with us.

Engineering and contracting fall under separate Washington registration rules: one for engineers, another requiring contractors to register with Labor and Industries. We do not offer engineering. If your job needs an engineer’s report or stamped drawings you hire the engineer, and the city’s permit staff can say whether your repair needs one.

HUD Rehab Guide, Volume 1: Foundations RCW 18.43.010, engineer registration RCW 18.27.020, contractor registration

Foundation repair in Bellevue homes

Bellevue is a city of 151,847 residents, and its homes were built in waves. Some 34.3 percent date from 1960 to 1979 and another 25.9 percent from 1980 to 1999, 27.4 percent are from 2000 on, and only 1.9 percent are from before 1950. About 52 percent are one-unit homes, and the median owner-occupied value is $1,340,300.

A house from the 1960s or 1970s may have a crawlspace with timber posts and an unbolted sill, which are matters for the crawlspace and seismic pages. A house from the 1980s or later is more likely to have a poured foundation wall, where the questions are cracks and drainage. We say "may" because we can only tell from the house itself.

When the lot is a critical area

Bellevue’s critical areas code puts some lots under extra rules, and a foundation job on one of them can need studies or approvals before a pier is chosen. Washington law lists geologically hazardous areas as one type of critical area, and the city’s code defines its own: landslide hazards, steep slopes, seismic hazards and coal mine hazards.

Landslide hazards are slopes of 15 percent or more with more than 10 feet of rise that also show certain features, such as past failures or seeps.
Steep slopes are slopes of 40 percent or more with at least 10 feet of rise and more than 1,000 square feet of area.
Seismic hazards include known faults and areas the Department of Natural Resources maps as moderate-to-high or high liquefaction susceptibility.
Coal mine hazards are the areas on the city’s coal mine maps.

Landslide and steep-slope areas carry a buffer measured from the top of the slope, set at 50 feet in the code. A house legally in place before August 2006 that already sits inside the buffer is carved out of it. How far an addition or a repair may go is a separate matter that the code handles elsewhere, so ask the city before you assume.

An exemption from one code does not exempt work from other codes or city laws, so a permit exemption never overrides the critical area rules. Whether a parcel sits inside a mapped area has to be checked parcel by parcel with the city, and the state’s geology portal and King County’s landslide map are places to look first.

Bellevue Land Use Code, critical areas Bellevue City Code, section on permits for repairs WAC 365-190-120, geologically hazardous areas Washington DNR Geologic Information Portal King County landslide mapping

Our process

Look at the house

First, your account: what you noticed and where. Then a walk around the outside, through the crawlspace or basement and across the rooms above, taking in the lot’s slope, the paths water takes and what sits against the footing.

Find the cause

Cracks, sloping floors and rot are signs. Soil, water, old framing or a missing connection is the cause. Where the cause is not clear, we say so, and an engineer’s evaluation comes before any pier.

Plan the repair

The repair is chosen to fit the cause, with the permit question and any critical area check settled first. You get a written scope for the work and for what it will not do.

Do the work

Work follows the plan and the engineer’s design where there is one. Anything found on the way that changes the plan is brought to you before it is done.

Clean up and hand over

Trenches are backfilled, debris leaves with us and you get a walk-through. Readings of the sign you had (a marked crack, a sloping floor) can be checked against what we noted at the start.

Permits for foundation repair in Bellevue

Bellevue’s code requires a permit to repair a building or structure unless the work is exempt. The exemption is for ordinary repairs, and it does not cover cutting away walls or removing or cutting a structural beam or load-bearing support. Whether a crack repair, a set of piers or a replaced post counts as ordinary is for the city’s permit staff to say. We do not promise permit-free work.

Registration with Labor and Industries is a licensing matter. It is not a building permit and not an approval of the work.

Bellevue City Code, section on permits for repairs RCW 18.27.020, contractor registration

What changes the cost

Each service lists a price range, and a range is only a starting point. A visit comes first, then the written estimate. What moves the price:

What is causing the problem, which decides the method
How deep firm soil lies and how many piers or posts the load needs
Access: slope, fences, landscaping and the height of the crawlspace
Engineering reports, a critical area review or a permit
How much finish has to come off and go back, inside or out
Water control that has to be done first or alongside

Service area

Bellevue first, then two neighbors with pages of their own: Mercer Island, around 6 road miles away, and Newcastle, around 6 as well. Hillsides, housing and city rules differ in each. Ask about other addresses nearby.

Frequently asked questions

How much does foundation repair cost?

Every service here has a range to start from, and the cause and method change the scale: sealing a hairline crack, replacing crawlspace posts and setting piers are not the same job. The list of cost factors above shows what moves a price, and the written estimate follows a visit.

Is a crack in my foundation serious?

Not necessarily. HUD’s inspection guide rates shrinkage cracking rarely serious; cracks that taper, run sideways or keep widening deserve a check, and an engineer may be the right first call.

Do you repair a crack from the inside or the outside?

It depends on what the crack is doing and which side can be reached. The method follows the cause. A moving crack needs the movement understood first, whichever side is sealed.

Is there a best time of year?

Water problems are easier to read after rain, and a visit then can show where water goes. HUD notes settlement usually happens over time, but a leaning wall or active slope movement is urgent.

Can I stay in the house during the work?

That depends on the job and is decided once the foundation has been seen. We say in the written scope what the work involves.

Does insurance pay for foundation repair?

Your policy and the cause decide that, so put the question to your insurer before work begins. We do not give insurance advice.

Is it worth fixing?

That depends on what the foundation is doing. A line that has not moved may only need watching. A foundation that keeps moving, or water that keeps coming, is a reason to find the cause. We would rather you hear that from a look at the house than from a sales pitch.

Request a free foundation repair quote

Send the address, the house’s approximate age, what you have noticed (crack, sloping floor, damp or soft wood) and where. Tell us if there is a crawlspace or basement and whether the lot slopes. We'll get back to you soon with an estimate or any questions we have. Estimates are free and there's no obligation.

Call (425) 696-3370