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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.
- Poorly-drained soil means sustained duty, not brief duty. A large share of the metro's mapped soil carries a "somewhat poorly drained" to "very poorly drained" classification in USDA's soil survey, 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.
Sources
Portland rainfall normals, pump service-life guidance, and regional soil drainage data cited above.
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NOAA National Weather Service, Portland, Portland Climate Book — precipitation normals (1991–2020 climate normals) Checked
Portland-area rainfall totals and their seasonal distribution, the basis for every statement on this site about the wet season and its timing.
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International Association of Certified Home Inspectors (InterNACHI), InterNACHI's Standard Estimated Life Expectancy Chart for Homes Explanatory summary, not the governing text Checked
The two equipment service lives the ownership-cost model turns on: a dehumidifier at 8 years and a sump pump at 7 years. This is the chart the home-inspection trade actually works from, which is why it is cited — an inspector reading a service life into a report is most often reading this one.
Note: An industry guideline chart, not a measurement. It states its own figures are determined from research and testing under regular recommended maintenance and normal wear, and should be used as guidelines only rather than relied on as guarantees. It publishes no sample, no method and no confidence interval, and it is not Portland-specific.
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USDA Natural Resources Conservation Service, Soil Survey Geographic Database (SSURGO), via Soil Data Access (muaggatt.drclassdcd — drainage class, dominant condition) Open dataset Checked
The soil drainage columns: the share of each city’s mapped area whose dominant soil drainage class is somewhat poorly drained, poorly drained or very poorly drained, and the share carrying no drainage class at all. Computed by intersecting each Census place boundary with the SSURGO map units and area-weighting the result.
Note: SSURGO assigns no drainage class to Urban land map units or to water, so the survey is least informative under exactly the dense older housing this site most often works on. The unrated share is published per city for that reason. Drainage class also describes natural soil in place — not the fill, the grading or the downspout run at any individual house.
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Oregon Legislative Assembly, ORS 479.540 — Exemptions (electrical licensing) (2023 Oregon Revised Statutes, 479.540(1)) Checked
That a person is not required to obtain a licence to make an electrical installation on residential or farm property owned by that person or a member of their immediate family, if the property is not intended for sale, exchange, lease or rent.
Note: An exemption from electrical LICENSING only. The work must still meet code, and permit and inspection requirements are set separately — see the City of Portland entry for how one jurisdiction applies them.
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City of Portland, Permitting & Development, Lights, outlets, switches, and service reconnect for residential electrical permits Checked
That in Portland a homeowner may do their own electrical work only where the property is not and will not be for sale, lease or rent, the work is done by the homeowner or an immediate family member, and the home is a single-family house or the owner-occupied side of a duplex; that a residential electrical permit is still required; and that the work is inspected by the city.
Note: City of Portland rules only. Other cities and counties in the metro issue their own electrical permits; confirm with whichever covers the address.
Sources last checked between and ; the date beside each one is when it was last opened. Where a figure comes from a document that is revised on a schedule, the edition or version is named above so you can confirm it against the current one yourself.
Estimate Your Sump Pump Installation Cost
Modelled estimates of the 2026 Portland metro market, not collected contractor quotes — how these figures are produced. Adjust for your specific conditions. A free in-person inspection gives you an exact quote.
Crawlspace Cost Calculator
Answer 6 quick questions for a modelled 2026 Portland-area price range. How these figures are produced.
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.