Lake County’s Superstore

80,000 square feet on 17 acres

Why make the long drive out of our beautiful county?

Precision Trusses. Built Local. Delivered Direct.

High-quality trusses manufactured in our plant and delivered daily to Lake, Marin, Mendocino, Napa, and Sonoma counties.

Building Materials

Best stocked lumberyard in Lake and Mendocino counties

Buy More. Get More.

Lock in savings. Seal in comfort. When you purchase select MILGARD Windows & Doors.

Hurry! Promotion is only available on orders placed September 1st – October 31st, 2026

Doors & Windows

Home Improvement

DIY heaven for your home and garden

Delivery

15 trucks delivering 6 days a week to Lake, Mendocino, Napa and Sonoma counties

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LAKE COUNTY’S BUILDING MATERIAL &
HOME IMPROVEMENT SUPERSTORE

Why make the long drive to the impersonal big box stores?
We have everything you need, right here!

All Products

Drywall

Ceiling Tile

Drywall Joint Compounds

Drywall Metal

Drywall Sheets

Plywood & Sheathing

ACX

CCX

CDX Square Edge

FRP Panels & Mouldings

Roofing

30 Year Malarkey

Corrugated Roofing & Accessories

Felts

Flashing, Nosing & Z-Bar

Moulding & Millwork

Alder Molding

MDF Moulding

Mouldings - Other

Dowels & Dowel Pins

Flooring

Flooring Tools

Tile & Tile Accessories

Floor Mats

Vinyl Flooring

Masonry

Bag Goods

CMU Blocks

Keystone Wall Units

Masonry Bits & Chisels

Building Materials

Flashing

Cement Underlayment

Gutter & Accessories

House Wrap

Fencing

Bamboo Fencing

Chainlink Fencing

Fencing Cedar

Fencing Redwood

Insulation

Fiberglass Rolls & Batts

Insulation Products

Reflectix Insulation

Rigid Insulation

Heating & Cooling

Ventilation

Air Conditioners & Coolers

Fireplace & Accessories

Wood Fuel

Power Tools & Accessories

Cordless Power Tools

Corded Power Tools

Air Compressors, Tools & Accessories

Generators

Lawn & Garden

Bird & Wildlife Supplies

Garden Tools

Landscaping

Lawn Care

Hardware

Fasteners

Sheet Metal

Simpson Strong Tie Products

Lock Boxes & Safes

Tools

Hand Tools

Ladders & Scaffold

Work Benches & Saw Horses

Concrete & Masonry

Electrical

Batteries

Boxes & Covers

Cables

Cell Phone Accessories

Plumbing

Appliance Hoses

Faucet & Sink Repair

Pipe

Pipe Cement, Primers & Cleaners

Lighting & Ceiling Fans

Cabinet & Specialty Lighting

Ceiling Fans & Parts

Indoor Light Fixtures

Lamps & Lamp Parts

Kitchen & Bath

Bathroom Faucets

Bathroom Tubs & Showers

Bathroom Vanities

Cabinets

Pet Products

Carriers & Kennels

Chicken Food & Accessories

Pet Food

Outdoor Shelters & Enclosures

Safety Equipment

Assorted Head Protection

Assorted Safety Equipment

Ear Protection

Eye Protection

Automotive

Automotive Accessories

Automotive Maintenance

Automotive Tools

Exhaust

Sporting Goods & Wellness

Bicycle Parts & Accessories

Camping & Outdoor

First Aid

Health & Wellness

Stationery

Arts & Crafts

Gift Wrapping Supplies

Office Supplies

Packing Supplies

WE’RE PROUD TO CARRY:

Countertops, Quartz, Granite, Laminate, Butcher Block

All prices on this web site are subject to change without notice. While we make every effort to provide you the most accurate, up-to-date information, occasionally, one or more items on our website may be incorrectly priced. Where a product is listed at an incorrect price due to typographical, photographic, or technical error or error in pricing information received from our suppliers, Kelseyville Lumber & Supply Co Inc shall have the right to refuse or cancel any orders placed for product listed at the incorrect price.

Just for you. An 80,000 square foot store - bigger than a football field - on 17 acres. Filled with building materials and home improvement everything. Biggest lumberyard in multiple counties. DIY heaven! Pro Sales team for contractors. Large garden center. Pet food! Even a restaurant. And so much more… Why make the long drive out of our beautiful county to an impersonal big box store? We have everything you need, right here!