Best California King Size Bed Frame

The Santorini Bed Frame by Saatva is a platform bed with streamlined legs. Designed with a fully upholstered headboard, the bed can be placed against a wall or in the middle of the room.

Saatva uses sustainably grown hardwood that is kiln-dried to help increase its strength and prevent warping. The frame has built-in plywood slats to support the mattress.

The Santorini is available in three design options. The taupe vintage velvet and the graphite vintage velvet models are made with a polyester-cotton blend. The natural linen model is constructed from flax fibers that are free of harsh chemicals or dyes.

This frame does not require a box spring or foundation, though it can be paired with Saatva’s adjustable base. The California king bed frame is 92 inches long, 78 inches wide, and 14 inches high, and the headboard is 42 inches tall.

Saatva offers free White Glove delivery to the contiguous U.S. After scheduling a date and time window, a professional will install the bed frame in your room of choice for no extra fee. The Santorini also comes with a lifetime warranty and a 365-night sleep trial, subject to a $99 handling fee in the event of a return.

The Nectar Mattress Foundation offers a versatile design at an accessible price-point. The frame includes optional legs, which provide 6 inches of storage space beneath the bed frame.

The Nectar Mattress Foundation features sturdy wood slats and doesn’t require a box spring to support your mattress. The solid slats are also designed to help prevent the mattress from shifting around. The wood legs and gray fabric cover make the foundation suitable for people who prefer a minimalist appearance.

The bed frame comes with instructions for easy assembly with no additional tools required. The frame is designed to clip and lock together, which makes it easier to disassemble and move if needed.

Nectar backs the Mattress Foundation with a 3-year warranty and a 50-day return policy. Nectar offers free shipping to the 48 contiguous states, and shipping is available to Hawaii and Alaska for an additional fee.

The Birch Madison Bed Frame evokes timeless style and delivers robust, long-lasting support. Solid maple legs, pine slats and rails made of maple and poplar ensure an exceptionally sturdy design. The “natural” color option should also appeal to people who enjoy the look of untreated wood. A water-based stain protects the frame while showcasing the wood’s natural grains and textures.

Setting up the frame is a breeze. Notched fittings — a joinery technique originating in Japan — allow you to assemble the components without tools or metal hardware. A height of 13 inches also means plenty of under-bed space for storing your belongings, which can come in handy for anyone whose bedroom is on the smaller side. If the natural look isn’t your thing, the frame is also available with a matte white finish. Please note the frame is not compatible with any headboards.

All wood used for the Madison Bed Frame is derived from trees grown in lots certified by the Forest Stewardship Council, so you can rest easy knowing your purchase is sustainably produced. The relatively low sticker price should also appeal to shoppers with limited budgets, especially given the long expected lifespan. Shipping is free for customers in all 50 states. Each order is backed by a 100-night trial period and 5-year manufacturer’s warranty.

The Bed by Thuma is a standout wooden frame for a few reasons. Made from acacia hardwood, the frame is exceptionally sturdy and long-lasting. The design also uses Japanese joinery to fit the head and foot with the rails. Aside from two hand-tightened screws to secure the slats, the frame does not require any metal hardware. You should be able to assemble The Bed in 15 minutes or less.

With a 9-inch height, the frame offers a fair amount of under-bed space for storing your belongings. The corners are rounded to prevent you from banging your shins when getting in and out of bed. Customers can choose between a wooden headboard or a pillowboard cushioned with soft foam. The latter’s pebbled fabric cover is removable and machine-washable, and available in three colors. Three stain options — walnut, natural, and espresso — are also available. In addition to the California king, you can select a twin, full, queen, king, or daybed size.

Although The Bed’s sticker price is on the expensive side, its lengthy expected lifespan makes the frame a solid long-term investment. Thuma also offers free shipping within the contiguous U.S. Each purchase includes a sleep trial spanning 100 nights. If you decide to keep your frame, you’ll also receive a lifetime warranty against workmanship defects.

If you want a bed frame that doubles as a statement piece for your bedroom, this upholstered model from Puffy delivers chic modern style thanks to a clean profile, versatile charcoal-grey fabric, and grid stitching on the foot and headboard. Hardwood slats provide excellent reinforcement, and the rails extend above the bottom of your mattress for extra stability while you sleep.

Since your mattress fits inside the frame, rather than resting on top of it, the potential for squeaks and creaks is quite low. Assembly is a quick and painless process, and should be completed in a matter of minutes. Full, queen, king, and California king sizes are available. If stains occur, you can remove and machine wash the upholstery fabric.

The sticker price for the Puffy Bed Frame is well below average and shipping is free for customers in all 50 states. Your order comes with a 101-night trial period. If you decide to keep the frame, you’ll receive a lifetime warranty against structural defects.

Avocado has earned a reputation for sleep products and home furnishings that are both luxurious and eco-friendly. The Mid-Century Modern Bed Frame nicely exemplifies both qualities. Composed of durable maple or walnut hardwood, the frame is visually striking, sturdy, and built to last. 

Assembling the frame is a breeze — the only outside tool needed is an Allen wrench, and the entire process can be completed within a few minutes. Robust slats provide excellent support for you and your mattress. For an additional charge, you have the option of including a headboard that adds an extra 24 inches to the profile. Clean lines and angular legs drive home the timeless heirloom aesthetic. Roughly 10 inches of under-bed clearance provides space for storing your belongings if your bedroom is on the smaller side. 

A certification from the Forest Stewardship Council ensures the wood used to construct the frame is sustainably sourced. The frame has also been recognized by the Sustainable Furnishings Council. Additionally, Avocado holds climate neutral status. This means the company offsets 100% of its emissions through eco-friendly manufacturing and shipping practices.

The Mid-Century Modern Frame is fairly expensive — especially if you include the headboard — but with proper assembly and care, it should hold up exceptionally well over time. Orders in the contiguous U.S. also qualify for free ground shipping. All furniture sales are final, so you may not return the frame for a refund at any point, but your purchase is backed by a 10-year warranty against structural defects.