Fill-dirt in Mercer Island, WA

Delivered fill-dirt prices in Mercer Island vary with source, screening, and truck access; expect a broad range roughly between $25 and $70 per ton, though extreme cases can be outside that range. Permits, truck unloading difficulty, and whether the material is screened or washed will affect price, so get a site-specific quote through Hello Gravel for an accurate delivered price. Remember Hello Gravel has a 3-ton minimum and offers standard delivery (2+ business days) with next-day available for orders placed before noon CST at an extra fee.

Hello Gravel connects you with local suppliers and haulers that serve Mercer Island, so you can order online and get competing local quotes without calling multiple companies. Typical truckloads delivered to residential sites are 10-15 cubic yards (roughly one tri-axle) and pricing depends on material quality and access; ask Hello Gravel for supplier options and per-ton or per-truck pricing for your zip code. If you need screened or special material, mention that in your order notes to get accurate truckload pricing.

Fill-dirt alone is generally not the best long-term driveway base in Mercer Island’s wet climate because it can retain moisture and settle if not properly engineered and compacted. For driveways we recommend using a well-draining granular base (crushed rock or road base) compacted in lifts, with fill-dirt used only for raising grades or non-structural layers. If you plan to use fill-dirt under a finished gravel or pavement surface, compact it in layers and add a drainage layer to reduce water retention and settlement.

To raise 1,000 sq ft by 6 inches you need about 500 cubic feet, which is roughly 18.5 cubic yards. Fill-dirt weighs about 1.4 to 1.6 tons per cubic yard, so that equals about 26 to 30 tons before accounting for compaction and settlement. We recommend ordering 10% extra to allow for compaction and spillage, so plan on roughly 29 to 33 tons and contact Hello Gravel to place an order (minimum 3 tons).

Fill-dirt generally does not offer the drainage performance of crushed stone and can hold moisture when placed on or near native clay soils common in West Washington, which can weaken stability. On slopes, fill-dirt must be placed and compacted carefully and often combined with geotextile, proper drainage measures, and retaining structures to avoid sliding or erosion. For steeper slopes or poor native soils, consult a civil engineer or geotechnical professional before large fills and consider using engineered or granular material where drainage and stability are critical.

For non-structural landscaping backfill, fill-dirt can be acceptable, but for foundations and retaining walls it is usually better to use engineered backfill or free-draining material per an engineer’s recommendations. Backfilling around structures requires proper compaction in lifts and attention to drainage to prevent hydrostatic pressure and settlement. We recommend hiring a professional for foundation or retaining wall backfill to ensure compliance with local codes and long-term performance.

Fill-dirt lifespan depends on placement method, compaction, and drainage; poorly compacted or wet fills can settle noticeably within months and may require regrading or additional material within 1-3 years. Properly placed and compacted fill-dirt with adequate drainage can remain stable for many years, but periodic settling and minor regrading are common in West Washington’s wet climate. If you need long-term stability for driveways or heavy use areas, consider a granular base or engineered fill instead of relying on fill-dirt alone.

Fill-dirt is usually less expensive per ton than crushed rock or engineered fill, making it a cost-effective choice for raising grades or non-structural areas. However, crushed rock and engineered fill outperform fill-dirt for drainage, load-bearing capacity, and resistance to settling, which makes them preferable for driveway bases, structural backfill, and drainage layers. Choose fill-dirt where budget and non-structural use allow, and use crushed rock or engineered fill where drainage and long-term stability are priorities.

Some local suppliers servicing Mercer Island offer screened or washed fill-dirt, and Hello Gravel can check availability and delivery options for your zip code. Same-day delivery may be possible in limited cases, but standard delivery is 2+ business days and next-day delivery is available for orders placed before noon CST for an extra fee; availability depends on local supplier schedules and access to your site. When ordering, note any driveway or street access restrictions and request screened material in the order notes to get an accurate delivery window and price.

Large fills, significant grading, or work that affects drainage and erosion control on Mercer Island may require a City of Mercer Island grading permit, erosion control measures, and possibly a building permit for related structures like retaining walls. Permit thresholds and required plans vary by project size and location, so contact the City of Mercer Island Permit Center or check King County requirements before ordering large volumes. Hello Gravel recommends confirming permit needs early to avoid delays or added costs.