The short answer
A standalone sump pump installation in the Portland metro typically runs $1,525 to $2,975 in 2026. Adding a battery backup pump brings the system to roughly $2,125 to $3,825.
That price assumes there is already a way for water to reach the pump. If there is not — if the crawl space has no perimeter drain, or the old one has collapsed — you are buying a full drainage system with a sump in it, which is $3,825 to $6,800.
The question to settle before you buy one
A sump pump removes water that has already collected somewhere. It does not collect the water and it does not stop it arriving. That makes it the right purchase in a narrow set of cases and the wrong one in a surprisingly common set.
| Situation | Is a pump alone the answer? |
|---|---|
| Working drain lines already run to a basin; the old pump has failed or was removed | Yes. This is the straightforward replacement case at the range above. |
| Water pools in one low spot the drains already reach | Usually. A correctly sited basin and pump handles it. |
| Water spreads across the crawl space floor with no drain to carry it anywhere | No. A pump in a hole cannot pull water sideways through soil. Drainage first. |
| Water enters after every storm from grading or downspouts | No. Fix the source outside first — often for a few hundred dollars. |
| Soil is damp, air is humid, nothing is standing | No. This is a vapor problem. A pump will never switch on. |
If you are unsure which row you are in, that is exactly what an inspection determines. Working back from the symptom is quicker: standing water in a crawl space covers what the pattern of water tells you about its source.
What a proper installation includes
The pump itself is a modest share of the price. Most of the cost is the rest of the system, and it is the rest of the system that determines whether it still works in five years:
- The basin. Sized and set below the level of the drain lines, with a lid.
- The pump. Submersible, sized to the expected volume, with a reliable float switch.
- A check valve on the discharge, so the column of water in the pipe does not drain back into the basin and re-trigger the pump.
- A dedicated, GFCI-protected circuit. Not an extension cord to a nearby outlet.
- The discharge line, routed far enough from the foundation that the water does not return, and terminating somewhere permitted in your jurisdiction.
- An alarm or backup, if the consequence of silent failure is a flooded crawl space.
When a quote looks unusually low, one of these is usually missing. The discharge line and the dedicated circuit are the two most commonly cut.
Portland-specific considerations
- Whether you need a pump at all depends on your lot. On sloped ground — common across the West Hills and the east-side slopes — a perimeter drain can often daylight downhill by gravity, with no pump, no power, and nothing to fail. On flat lots in the inner east side and much of the valley floor, there is nowhere for gravity to take it and a sump is the only option. This is the single biggest local variable in whether this line item exists.
- Clay soils mean sustained duty, not brief duty. Much of the metro sits on clay-heavy soil that drains slowly, so a pump here tends to run repeatedly through a long wet season rather than occasionally after storms. Duty cycle is what wears pumps out.
- Rain and outages arrive together. November through January carry roughly 44 percent of Portland's annual precipitation (about 16.25 of 36.92 inches in the 1991–2020 normals at PDX), and the same season brings the wind storms that take power out. That overlap is the honest argument for a battery backup.
What to do next
If drain lines already exist and the pump has failed, this is a well-defined job and quotes should be close to each other. If you are not sure whether drain lines exist — very common in Portland homes built before the early 1990s, where an original clay-tile footing drain may have collapsed decades ago — the useful next step is having someone look, not collecting pump prices.
Portland Crawlspace Pros is a lead-matching service. We connect homeowners with independent licensed contractors and do not perform the work ourselves. Verify any Oregon contractor's standing with the Construction Contractors Board, or a Clark County contractor through Washington L&I, before signing. A free in-home inspection is how you find out which job you actually have.
Estimate Your Sump Pump Installation Cost
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Crawlspace Cost Calculator
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This estimate is based on Portland metro 2026 pricing for projects of this size and scope. Actual costs vary by specific conditions and contractor. Get a free in-person inspection to confirm.
What Affects the Cost?
- Square footage : Larger crawlspaces require more materials and labor hours.
- Current moisture level : Standing water or active mold adds remediation steps before work begins.
- Access and clearance : Very low crawlspaces (under 18") require extra time and specialized equipment.
- Existing vapor barrier : Removing and disposing of an old barrier adds to labor cost.
- Insulation condition : Wet or rodent-damaged insulation typically needs full replacement.
- Add-on services : Sump pump, dehumidifier, or mold remediation increase total project cost.
- Foundation vents : Sealed crawlspace encapsulation requires closing existing vents.
- ZIP code and access route : Some neighborhoods require permit fees or have limited staging space.