How to Install Kitchen Cabinets: A Step-by-Step Guide for Carson Homeowners
How to Install Kitchen Cabinets: A Step-by-Step Guide for Carson Homeowners
By Lorena Castro
Installing kitchen cabinets is one of the most impactful phases of a kitchen remodel. Done correctly, it sets up everything that follows — countertops, appliances, backsplash, and trim — to land cleanly and look intentional. Done poorly, even the most beautiful cabinet selection can end up looking off.
This guide is written for Carson homeowners who are either planning a DIY cabinet installation or want to understand the process well enough to work confidently alongside a contractor. The steps here apply broadly to standard base and wall cabinet installation, with notes on where conditions in older South Bay homes may require a bit more care.
If you are still in the selection phase, the kitchen cabinet options at Apex Granite Outlet's Carson location cover a wide range of styles, including frameless European designs and American framed cabinetry, so you can compare construction types in person before you commit.
Before You Start: What You Need to Know
Understand What Type of Cabinets You Have
The installation process varies depending on whether your cabinets are framed or frameless, RTA (ready-to-assemble) or pre-assembled. Frameless cabinets, sometimes called European-style, have no face frame, so the door and drawer hardware attaches directly to the cabinet box. Framed cabinets have a solid wood frame attached to the front of the box, which slightly reduces the interior opening but adds rigidity. Both types install in similar sequence, but hanging hardware and door adjustment differ.
If you purchased RTA cabinets, assembly comes first. Apex provides assembly instructions to guide you through that process before installation begins.
Gather Your Tools
- Stud finder
- Level (a 4-foot level is preferable)
- Drill and driver bits
- Clamps
- Tape measure
- Pencil
- Shims
- Cabinet screws (typically 2.5 to 3 inches for wall studs)
- Ledger board (a straight piece of lumber you temporarily screw into the wall to support upper cabinets during hanging)
- Laser level (optional but significantly faster)
Measure Carefully Before You Do Anything Else
Accurate measurements are not optional. In older Carson homes — particularly those built in the mid-century period common in the area — walls are rarely perfectly plumb, floors are rarely perfectly level, and corners are rarely a true 90 degrees. You need to know your actual conditions, not assumed ones.
The kitchen measuring guide from Apex walks through exactly what to measure and how to account for irregularities. Work from that before finalizing your cabinet order or starting demo.
Step 1: Prep the Space
Remove all existing cabinets, appliances, and anything attached to the walls in the work area. Patch and prime any drywall damage. Flooring can go in before or after cabinets depending on your preference — many remodelers install flooring after base cabinets to avoid having finished flooring under units that can't be seen, though this is largely a personal call.
Mark the location of every wall stud from floor to ceiling in the installation area. Mark them clearly with tape or pencil at a height that will still be visible after you draw your layout lines. Cabinets must anchor into studs, not just drywall.
Step 2: Establish Your Reference Lines
This is the most critical step in the entire installation. Everything — wall cabinets, base cabinets, countertop height — traces back to these lines.
Find Your High Point
Using your level, walk the perimeter of the room and find the highest point on the floor. This is your baseline. Measure up from that point to mark your finished base cabinet height (typically 34.5 inches, which accounts for a standard countertop bringing total height to approximately 36 inches). Draw a level horizontal line across the entire wall at that height. This is your base cabinet reference line.
Mark Your Upper Cabinet Line
Standard upper cabinets hang so their bottom edge sits roughly 18 inches above the countertop surface, which puts the bottom of uppers at approximately 54 inches from the floor. Mark this line level across the wall — this is where your ledger board will go.
These measurements reflect common practice for standard-height kitchens. If you are designing for specific ergonomic needs, taller ceilings, or custom cabinet heights, adjust accordingly.
Step 3: Install the Ledger Board
Cut a straight piece of lumber (a 1x4 or 1x3 works well) and screw it temporarily into the wall studs along your upper cabinet line. The top edge of this board should sit exactly on your upper cabinet bottom reference line. This board supports the weight of the upper cabinets while you fasten them, so you are not trying to hold a heavy cabinet against the wall with one hand while driving screws with the other.
This is a simple step that saves a significant amount of frustration, especially when working without a second person.
Step 4: Install Upper Cabinets First
Upper cabinets go in before base cabinets. The reason is purely practical — you have clear floor space to stand and maneuver, and you avoid working over already-installed base units.
Start at a Corner
Begin with a corner cabinet or, in the absence of a corner, the cabinet at the most visible end of the run. Set it on the ledger board, check that it is plumb (vertically level) side to side and front to back, and drive screws through the cabinet's hanging rail into the wall studs. Use at least two screws per stud location — one near the top, one near the bottom of the rail.
Add Cabinets in Sequence
Hang adjacent cabinets one at a time, clamping each new unit to the last before fastening it to the wall. Clamp through the face frames or, on frameless cabinets, through pre-drilled holes in the cabinet sides. Drive screws through the side of one cabinet box into the next to join them — this is called stitching or gang-screwing the cabinets together. This pulls the faces flush and creates a unified, rigid run.
Check plumb on every cabinet before moving to the next. Shimming the back of a cabinet is normal and expected, particularly in older construction where walls have some bow or irregularity.
Fill Gaps as You Go
Small gaps between the cabinet and an uneven wall surface are common and expected. Shims handle this at the wall, and scribe molding or filler strips handle the visible edge where a cabinet meets a wall at an end. Do not force cabinets against irregular walls — you will rack the box.
Step 5: Install Base Cabinets
With uppers hung, move to base cabinets. The sequence here mirrors upper installation: start at a corner or a reference point, check level, shim from the floor as needed, and fasten to studs.
Shimming the Base
Because you built your reference line from the high point on the floor, all base cabinets need to come up to that height. Cabinets that sit on the low side of the floor get shimmed up. Slide shims under the cabinet until the top edge is perfectly level with your reference line, then fasten to the wall. Trim any protruding shim material with a utility knife or oscillating tool.
Joining Base Cabinets
Clamp and gang-screw base cabinets together the same way you did uppers — through the sides of the cabinet boxes, driving screws into each other to create a rigid, aligned run. Check that drawer fronts and doors align across the run before fully tightening everything.
Toe Kicks
Base cabinet toe kicks are typically separate pieces attached after the run is complete. They cover the open space below the cabinets and give the installation a finished appearance.
Step 6: Install Filler Strips and Trim
Where a cabinet run ends at a wall or at an appliance, you will often need filler strips to close the gap. These are narrow pieces of cabinet-matching material that bridge the space between the last cabinet and the wall. They are typically pre-cut or available through your cabinet supplier and are scribed or trimmed to fit the wall's actual profile.
This step matters more in Carson-area older homes than in new construction, where wall angles at cabinet ends often need hand-scribing to look clean.
Step 7: Adjust Doors and Drawers
Once everything is fastened, remove your ledger board and adjust all doors and drawer fronts. Frameless cabinets with cup hinges (the most common type in contemporary kitchen cabinetry) offer three-directional adjustment — up and down, left and right, and in and out — without any tools beyond a screwdriver. Take the time to get every door parallel and every reveal (the gap between doors) consistent. This is what makes a finished kitchen look professionally installed.
Drawer boxes typically require less adjustment but check that they slide smoothly and that the fronts align horizontally across the run.
Step 8: Prepare for Countertops
Once cabinets are fully installed, level, and adjusted, your countertop fabricator can come in for templating. Most stone countertop fabricators — for granite, quartz, or sintered stone — will not template until cabinets are installed and stable, because the template is cut to the exact dimensions of the cabinet run as it actually sits in the room.
If you are coordinating countertops alongside your cabinet installation, the countertop options at Apex's Carson showroom include granite, quartz, and other surface materials that can be reviewed while your cabinet installation is in progress, so templating can follow without delay.
Common Mistakes to Avoid
- Skipping the ledger board. Trying to hang upper cabinets without temporary support makes the job significantly harder and increases the chance of misalignment.
- Not finding every stud. Cabinets fastened only into drywall will eventually pull away from the wall, particularly when loaded with dishes and cookware.
- Ignoring the high point of the floor. Building from an assumed level surface rather than finding the actual high point causes base cabinets to be out of level, which then affects countertop fit and appliance alignment.
- Rushing door and drawer adjustment. The reveal gaps between doors are one of the most visible quality indicators in a finished kitchen. Uneven reveals draw attention in a way that most homeowners notice even if they can not immediately name what looks off.
- Not accounting for appliance openings. Refrigerator, range, and dishwasher openings need specific clearances. Confirm your appliance specs before finalizing cabinet placement.
- Changing the cabinet layout after ordering. Modifications after an order is placed can affect lead times and may require additional filler pieces or custom sizing. Get the layout finalized and measured before placing the order.
Questions to Ask Before You Buy Your Cabinets
- Are these cabinets pre-assembled or RTA, and what does assembly require?
- What is the box construction — plywood or particleboard — and how does that affect the installation method?
- Are filler strips, toe kicks, and crown molding included or sold separately?
- What screws and hardware are included, and what do I need to supply?
- What is the lead time from order to delivery or pickup?
- Are soft-close hinges and drawer slides standard, or are they an upgrade?
- Can the cabinet dimensions be adjusted if my kitchen requires non-standard sizing?
- What is the return or exchange policy if something arrives damaged?
For detailed answers on construction, features, and what is included with Apex cabinets, the cabinet features page covers the specifics, and the cabinet FAQ addresses the most common questions about ordering and installation.
When to Hire a Professional
Cabinet installation is within reach for a capable DIYer who is comfortable with a drill, a level, and following a sequence. That said, a few situations generally call for professional help: kitchens with significant out-of-plumb walls that require extensive scribing, layouts involving custom modifications or complex corner solutions, homes with structural concerns, or projects where timing is tight and a mistake would delay the countertop template.
Many Carson homeowners work with local contractors who handle installation while sourcing the cabinets independently through a supplier like Apex — a common arrangement that lets the homeowner control material selection and cost while leaving the physical installation to someone with experience.
Visiting the Apex Carson Showroom
If you are in the planning phase, seeing cabinet boxes in person makes a real difference. Door samples tell you the style, but standing in front of a full-sized display cabinet tells you how the construction feels, how the drawer slides operate, and how the interior fits your actual storage needs. The Apex Granite Outlet kitchen cabinet showroom in Carson carries a range of styles and finishes, and the team can walk you through layout considerations specific to your kitchen dimensions.
Bring your measurements, any photos of your existing kitchen, and a rough sense of your layout. If you want design help before you visit, Apex also offers a free 3D kitchen design service that can help you visualize the layout before anything is ordered or installed.
Frequently Asked Questions
Do I need a permit to install kitchen cabinets in Carson, CA?
Cabinet replacement alone typically does not require a permit, but work that involves moving plumbing, electrical, or gas lines generally does. If you are relocating a sink, adding outlets, or moving a range hood, check with the City of Carson Building and Safety Division before starting work. When in doubt, it is worth a quick call to confirm.
Should upper cabinets go in before base cabinets?
Yes. Installing uppers first gives you clear access and floor space to maneuver, and you avoid working around already-installed base units. Trying to install uppers after bases are in makes the job noticeably more difficult.
What is the standard height for upper cabinet installation?
The bottom of upper cabinets typically sits approximately 18 inches above the finished countertop surface, which places the bottom edge at roughly 54 inches from the floor in a standard-height kitchen. This can be adjusted for ceiling height, custom designs, or specific ergonomic needs.
How do I handle an uneven floor?
Find the highest point on the floor, set your reference line from there, and shim all other base cabinets up to that line. Never cut down a cabinet to accommodate a low floor — shim up to a consistent level instead.
What is the difference between frameless and framed kitchen cabinets?
Framed cabinets have a solid wood face frame attached to the front of the box, which adds structure and a traditional look. Frameless cabinets — common in European and contemporary kitchens — have no face frame, which allows for slightly larger interior access and a cleaner, more modern appearance. Installation is similar for both, though door hinge type and adjustment method differ. You can see both construction styles at the Apex Carson showroom.
Can I install cabinets myself if I have no prior experience?
Many homeowners do complete their own cabinet installations successfully, particularly with RTA or pre-assembled cabinets designed for accessible installation. The most important factors are taking accurate measurements, working methodically through each step, and not rushing the leveling and alignment stages. If your kitchen has unusual conditions — very uneven walls, structural irregularities, or complex corner layouts — professional installation may be a better investment.
How long does cabinet installation typically take?
A standard kitchen for a single installer with a helper can often be completed in one to two days, depending on the size of the kitchen, the complexity of the layout, and whether any wall or floor conditions require extra shimming or scribing. Larger kitchens or those with significant irregularities may take longer.