Unfinished hardwood flooring provides the ultimate blank canvas for flooring contractors, interior architects, and discerning homeowners who require complete control over color formulation, sheen level, and flush surface uniformity. Delivered as raw, precision-milled timber, unfinished planks are installed, custom-sanded flat on site, and hand-finished with penetrating oils, reactive stains, or commercial-grade sealers.
At Whole Wood, we warehouse Northern California’s largest inventory of unfinished domestic lumber and engineered raw platforms, supplying trade professionals and custom builders with direct wholesale warehouse pricing.
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Exclusive Showroom Voucher
Valid on purchases over 500 sq ft
Redeem Code
WW-SELECT-25
Present this at the San Carlos or Hayward showroom.
Cannot be combined with other factory-direct clearances.
Why Install Unfinished Hardwood?
Site-finished raw timber offers unique aesthetic and architectural advantages over factory-prefinished flooring:
- Monolithic, Bevel-Free Plane: Prefinished planks feature micro-beveled edges between boards to absorb subfloor irregularities. Unfinished flooring is sanded flat after nailing, creating a perfectly continuous, flush plane with zero dirt-trapping grooves.
- Flawless Color Matching & Additions: The premier choice when weaving new planks into existing historic flooring during home expansions or kitchen remodels. Stains and sealers can be custom mixed to blend seamlessly with decades-old adjacent wood.
- Complete Sheen & Chemistry Control: Finish with hardwax oils (like Rubio Monocoat or Pallmann), natural matte urethanes, reactive stains, or bleached Scandinavian white-washes that are rarely available in standard prefinished lines.
- Architectural Detailing & Inlays: Enables flooring artisans to cut and install custom flush border transitions, herringbone focal points, laser medallions, and custom stair treads before sanding the entire room into a single unified plane.
Official Hardwood Lumber Grading Standards
Understanding National Wood Flooring Association (NWFA) lumber grades ensures you achieve the exact visual aesthetic your design requires:
| Lumber Grade | Visual Characteristics | Average Plank Length | Best Architectural Style |
|---|---|---|---|
| Clear Grade (1st Grade) | Uniform heartwood color, free of knots, checks, or mineral streaks | Longest (~3.5 ft to 4 ft avg) | Formal luxury, ultra-modern minimalism |
| Select & Better | Subtle natural color variance, occasional pin knots, minimal sapwood | Medium-Long (~3 ft avg) | Transitional, coastal, contemporary builds |
| #1 Common (2nd Grade) | Moderate color variations, small sound knots, character markings | Medium (~2.5 ft avg) | Traditional American, Craftsman restorations |
| #2 Common / Character | Prominent mineral streaks, dark knots, open checks, high color contrast | Shorter (~2 ft avg) | Rustic farmhouse, vintage, modern organic |
Ideal Regional Living Spaces & Project Types
- Historic Restorations & Victorians: Replicate original period-specific milling widths and custom amber patinas in classic properties throughout San Francisco, San Rafael, and San Mateo.
- Open-Concept Renovations: Create a flat, seamless floor across kitchens, living rooms, and hallways without transition strips in San Jose, Santa Clara, and Sunnyvale.
- Custom Color Staining: Allow local flooring mechanics to blend bespoke gray, espresso, or bleached hues in Hayward, San Leandro, and Oakland.
Unfinished vs. Prefinished Flooring Matrix
| Installation Attribute | Unfinished Raw Hardwood | Factory-Prefinished Hardwood |
|---|---|---|
| Board Edge Profile | Square edge, sanded 100% flush on site | Micro-beveled or eased edges between boards |
| Color Customization | Infinite custom stains, oils, and sheen choices | Limited to manufacturer catalog offerings |
| Project Timeline | Requires multi-day on-site sanding and curing | Walk-on ready immediately upon fastening |
| Subfloor Compensation | Sanding levels slight subfloor height variations | Requires strict subfloor flat tolerances prior to install |
| Seamless Repairs | Easily spot-sanded and blended into surrounding room | Plank replacement or full room refinishing required |
Top In-Stock Unfinished Species
- White Oak: Available in Plain Sawn, Rift & Quartered, and Live Sawn cuts for pristine modern finishes.
- Red Oak: The reliable standard for traditional home expansions and historic grain matching.
- American Walnut: Raw dark heartwood ready for rich, natural oil enhancements.
- Hickory & Hard Maple: Ultra-hard species for high-traffic custom installations.
- Brazilian Cherry (Jatoba): Dense exotic raw lumber capable of developing a deep reddish-amber patina.
Visit a Showroom
San Carlos (HQ)
Our flagship showroom and main distribution warehouse. The largest inventory in the Peninsula.
Location
1100 Industrial Rd #17, San Carlos, CA 94070
Hours
M–F 8:30am – 5pm | Sat 10am – 4:30pm
Sunday Closed
Hayward
New East Bay location and regional service center. Factory-direct pricing now available in Hayward.
Location
3468 Diablo Ave, Hayward, CA 94545
Hours
M–F 8:30am – 5pm | Sat 10am – 4:30pm
Sunday Closed
San Ramon
Serving the Tri-Valley area with premium hardwood selections. Arriving Summer 2026.
Launch Schedule
Projected Opening: Summer 2026
Contractor Sourcing & Regional Showroom Access
Evaluate raw lumber grades, compare Rift & Quartered cuts against Plain Sawn bundles, or coordinate same-day job-site bundle pickups across our regional facilities:
- Peninsula Flagship Showroom & Central Warehouse: San Carlos Showroom (1100 Industrial Rd, Suite 17, San Carlos, CA 94070)
- East Bay Showroom & Distribution Hub: Hayward Showroom (3468 Diablo Ave, Hayward, CA 94545)
Request a Wholesale Quote
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See Unfinished Hardwood Flooring In Person
Visit our San Carlos or Hayward showroom to inspect full-sized displays and take home samples.
Visit a Showroom
San Carlos (HQ)
Our flagship showroom and main distribution warehouse. The largest inventory in the Peninsula.
Location
1100 Industrial Rd #17, San Carlos, CA 94070
Hours
M–F 8:30am – 5pm | Sat 10am – 4:30pm
Sunday Closed
Hayward
New East Bay location and regional service center. Factory-direct pricing now available in Hayward.
Location
3468 Diablo Ave, Hayward, CA 94545
Hours
M–F 8:30am – 5pm | Sat 10am – 4:30pm
Sunday Closed
San Ramon
Serving the Tri-Valley area with premium hardwood selections. Arriving Summer 2026.
Launch Schedule
Projected Opening: Summer 2026