What waterproofing costs in Portland
Typical price ranges for each service, and what moves the price.
Call (971) 772-3963Why we do not quote a flat number
Waterproofing is not a catalog item. A basement with one leaking crack and a basement with a failed footing drain on three walls can be the same size and need completely different work. A number given without seeing the house is a guess, and a guess is the wrong way to start a repair.
What we can do is give you honest ranges and tell you what drives each one. Use the table below to see where your job is likely to fall, then call (971) 772-3963 for exact pricing.
Typical price ranges by service
These are typical ranges for Portland-area homes. Your job can land below or above them, depending on the factors in the right-hand column. Call (971) 772-3963 for exact pricing.
| Service | Typical range | What moves the price |
|---|---|---|
| Basement Waterproofing | $4,000 – $12,000 | Linear feet of wall, finished or open basement, water volume, size of sump and pump. |
| Basement Leak Repair | $500 – $3,000 | Number of leak points, crack length, wall access and whether the cause is one spot or many. |
| Crawl Space Waterproofing | $3,000 – $9,000 | Crawl space size, depth of standing water, access hatch size, pump and drain pipe length. |
| Crawl Space Encapsulation | $4,000 – $12,000 | Floor and wall area, clearance height, liner thickness, insulation and dehumidifier size. |
| Crawl Space Vapor Barrier Installation | $1,000 – $3,500 | Floor area, clearance, debris to clear and thickness of the barrier. |
| Foundation Waterproofing | $4,000 – $15,000 | Wall length and depth, interior or exterior approach, existing drain condition. |
| Exterior Waterproofing | $8,000 – $25,000 | Excavation depth, landscaping and hardscape in the way, wall length and membrane type. |
| Foundation Crack Repair | $500 – $2,500 | Crack length and width, whether it is moving, epoxy or polyurethane, interior or exterior access. |
| French Drain Installation | $2,500 – $10,000 | Trench length and depth, soil, surface to restore and the discharge point. |
| Sump Pump Installation | $1,200 – $4,500 | Pump size, basin, discharge line length, battery backup and whether the slab needs cutting. |
The four things that matter most
Size and length
More wall, more floor area or a longer trench means more material and more hours. Interior drains and French drains are priced largely by length.
Access
A finished basement with stored furniture, a crawl space with an 18-inch hatch or a house with no side yard room all slow the work. Easy access keeps the cost down.
Soil and water
Heavy Portland clay and a high water table call for larger systems and stronger pumps. We size the system for a wet January, not a dry October.
System type
Sealing a crack, installing an interior drain and excavating the outside of the foundation are three different price levels. The right one depends on where the water comes from.
Getting an exact price
Call (971) 772-3963 and describe what you see. We book a site visit, trace the water, and give you the scope and the price in writing. You will know what is included before the work begins.
Pricing questions
Do you give prices over the phone?
We give you the factors over the phone, but an exact price needs a look at the job. Two basements the same size can need very different systems depending on soil, water and the condition of the existing drain.
Why is exterior waterproofing priced higher than interior?
Exterior work means excavating down to the footing, sealing the wall and installing a new drain, then backfilling and restoring the surface. It takes more labor and equipment, and it needs access around the house.
Does waterproofing price depend on the time of year?
Wet weather can slow excavation and extend a job, which affects labor. Late summer and early fall are the easiest months for outdoor work in Portland.
What if I only need part of the work?
We can scope it in stages. A common approach is to stop the active water first, then add sealing or humidity control later. We explain what each step does and what it leaves unfixed.
Get exact pricing
Call and describe the problem. We schedule a site visit and scope the work.