Calculate cubic yards, bags needed, and Snohomish County–accurate ready-mix costs for any Everett project — driveways, marine clay foundations, wet-season slabs, Puget Sound footings & more.
Cubic yards, bags needed & Snohomish County ready-mix cost — instant results
Driveway: 4 in. min, 3,000 PSI. No air entrainment required — Everett averages fewer than 10 significant freeze-thaw events/yr. Rebar recommended on marine clay. No permit for private flatwork. Avoid saturated Oct–May subgrade. Call 811 before digging.
Patio 3.5–4 in · Driveway 4–5 in · Garage 4–5 in · Footing 12–18 in · Foundation wall 8 in min · Retaining wall 8–12 in
Everett's concrete work is defined by two major challenges: Lawton marine clay and soft alluvial soils, and the long Pacific Northwest wet season. Lawton Clay — dense glacially deposited marine sediment — dominates much of Everett's hillside terrain and compresses significantly under structural load when disturbed or saturated. Soft alluvial and deltaic soils in the Snohomish River floodplain areas present even greater settlement risk. Combined with Everett's Oct–May rainy season (when subgrades remain saturated for weeks), these conditions make proper subgrade preparation the single most important factor in any Everett concrete project. Ready-mix costs a premium $155–$185/yd reflecting high Puget Sound labor costs, Washington State B&O taxes, and Seattle-metro market pricing. [web:109][web:111][web:113]
Lawton Clay and soft alluvial soils common across Everett compress significantly under structural load when disturbed and saturated, causing slab settlement, foundation movement, and cracking. Always over-excavate 4–6 inches and replace with compacted crushed rock (3/4-inch minus) before placing any concrete. A geotechnical report is required by City of Everett Permit Services for most new residential foundations — it specifies required bearing capacity, subgrade prep, and footing depths specific to your lot's soil conditions. [web:113]
The City of Everett Permit Services does NOT require a permit for concrete flatwork (patios, driveways, walkways on private property). Permits ARE required for all structural concrete — foundations, basement walls, retaining walls, ADUs, garages, and additions. A mandatory footing inspection is required before structural concrete is placed. Retaining walls over 4 ft require a permit and engineer-stamped plans. Contact Everett Permit Services at (425) 257-8810. [web:116]
10×40 ft at 4 in. = ~4.9 yd. At $155–$180/yd → $760–$882 material. 3,000 PSI standard. Rebar recommended on clay sites. No permit for private flatwork. Avoid Oct–May saturated subgrade. Call 811 before digging. [web:109]
Everett's Oct–May rainy season saturates Lawton Clay subgrade, making compaction nearly impossible. Cover fresh concrete immediately if rain forecast within 2–3 hours. Never pour on standing water or soft, yielding ground. Schedule pours during dry-weather windows Jun–Sep whenever possible. Have plastic sheeting and windbreaks on-site all year. [web:111]
WSBC 2021 requires footings at 12 in. min below grade in Snohomish County. 3,000–3,500 PSI min. #4 rebar. City of Everett mandatory footing inspection before pour. Geotech report required for most new residential foundations. ADU and addition foundations follow WSBC 2021 / Snohomish County structural requirements. [web:115][web:118]
Everett is served by multiple Puget Sound north metro ready-mix suppliers including Green Dot Concrete (Snohomish County specialist), Cadman, and Cemex. Short-load fees of $150–$250 apply for orders under 7–8 yards. Weekend surcharges of $75–$150/truck. Pump truck rental adds $400–$900/day. [web:109]
| Mix / PSI | Everett / Snohomish Price / Yd | National Avg | Best For | WA Code |
|---|---|---|---|---|
| 2,500 PSI | $155–$168 | $119–$132 | Non-structural walkways, interior slabs | Non-Structural |
| 3,000 PSI ← WA Standard | $160–$174 | $124–$140 | Driveways, patios, garage floors | Compliant |
| 3,500 PSI | $167–$180 | $130–$148 | Foundations, structural slabs, ADUs | Compliant |
| 4,000 PSI | $174–$188 | $136–$155 | Basement walls, heavy structural | Compliant |
| 5,000 PSI | $185–$210 | $147–$172 | Commercial / post-tensioned specialty | Engineer Req. |
| Fiber / Stamped / Colored | $190–$245 | $155–$205 | Decorative driveways, outdoor patios | Compliant |
Issues all Everett building permits under Washington State Building Code 2021. Required for foundations, structural slabs, retaining walls, ADUs, and garages. Mandatory footing inspection before structural concrete is placed. Retaining walls over 4 ft require engineer-stamped plans. Contact (425) 257-8810.
Visit Everett Permit ServicesAll Washington concrete contractors must hold a valid Washington State Department of Labor & Industries (L&I) contractor registration. WA law requires registration for any project over $500. Always verify your Everett contractor's L&I registration and check for complaints before signing a contract — unlicensed work voids warranties and creates homeowner liability.
Verify WA Contractor LicenseWashington State law requires calling 811 at least 2 business days before any excavation in Everett. Washington 811 coordinates free marking of underground Puget Sound Energy gas/electric, City of Everett water/sewer, and telecom lines. Failure to call is a Washington State law violation with serious safety and financial consequences.
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