15 IKEA Kitchen Mistakes to Avoid (From Installers Who've Seen It All)

15 IKEA Kitchen Mistakes to Avoid (From Installers Who've Seen It All)

We've installed hundreds of IKEA kitchens across Massachusetts, Connecticut, and Rhode Island. Along the way, we've seen homeowners — smart, capable people — make the same mistakes over and over. Some of these mistakes cost a few hours. Others cost thousands of dollars and weeks of delay.

Here are the 15 most common IKEA kitchen mistakes, why they happen, and how to avoid every single one.

Mistake 1: Wrong Measurements

What happens: The kitchen is measured incorrectly (or not measured at all beyond rough dimensions), and the cabinet plan doesn't fit the actual space. Cabinets are too wide, too tall, or in the wrong position.

Why it's so common: People trust that their kitchen is roughly a certain size and don't verify. Or they measure once, quickly, and get it wrong.

How to avoid it: Measure everything at least twice. Measure walls at three heights. Check for level and plumb. We have a complete measurement guide that walks you through every step.

Cost of this mistake: $500 – $3,000+ in re-ordered cabinets and project delays.

Mistake 2: Not Ordering Enough Filler

What happens: Gaps appear between cabinets and walls, at the ends of runs, and around appliances. The kitchen looks unfinished and amateurish.

Why it's so common: Filler strips seem like a minor detail during the planning stage. People don't realize how much filler they'll need, especially in older homes with irregular walls.

How to avoid it: Order at least 3-4 more filler strips than your plan calls for, in both widths (narrow and wide). You can return unused ones. In older New England homes with out-of-plumb walls, you might need double what you'd expect.

Cost of this mistake: $50 – $200 in additional filler (plus a return trip to IKEA or a delivery wait).

Mistake 3: Ignoring Wall Condition

What happens: The suspension rail is installed on a wall that's crumbling, has weak plaster, or has no studs where needed. Wall cabinets sag, pull away from the wall, or — in the worst case — fall.

Why it's so common: The wall looked fine behind the old cabinets. Nobody checked until the new rail was going up.

How to avoid it: After demolishing the old kitchen, inspect the walls thoroughly. Check for:

• Solid stud locations where the rail needs to be mounted
• Crumbling plaster or water-damaged drywall
• Signs of water intrusion or mold

Repair any issues before installing the suspension rail. Consider adding plywood backing for reinforcement if the wall is in rough shape.

Cost of this mistake: $200 – $1,000+ in wall repairs, or potentially catastrophic if wall cabinets fall.

Mistake 4: Skipping the Suspension Rail

What happens: Someone tries to mount wall cabinets by screwing directly through the cabinet backs into the wall, bypassing IKEA's suspension rail system entirely.

Why it's so common: It seems faster and simpler. The old cabinets might have been mounted that way.

How to avoid it: Always use the IKEA suspension rail. It distributes weight properly, allows for precise adjustment, and is a fundamental part of the SEKTION system. The rail isn't optional — it's how the system is designed to work.

Cost of this mistake: Potentially the entire kitchen if cabinets come off the wall. Plus the wall damage from failed mounting.

Mistake 5: Wrong Cabinet Depth for Appliances

What happens: A refrigerator sticks out 4 inches past the cabinets, or a range doesn't fit in the allotted space, or a dishwasher can't open because it hits the island.

Why it's so common: People design around generic appliance sizes without measuring their specific appliances. Or they plan for standard-depth appliances and then buy counter-depth (or vice versa).

How to avoid it: Get the exact model numbers of every appliance before finalizing your kitchen plan. Download the specification sheets from the manufacturer's website and note the exact dimensions, including door swing clearances. IKEA's planner has generic appliance placeholders, but they may not match your actual appliances.

Cost of this mistake: $500 – $3,000+ to modify cabinets or exchange appliances.

Mistake 6: Forgetting Toe Kicks

What happens: The kitchen is installed beautifully — then everyone realizes the gap under the cabinets (between the adjustable legs and the floor) is exposed, showing raw cabinet bottoms and plumbing.

Why it's so common: Toe kicks (FORBATTRA in IKEA's catalog) are a separate order item and easy to forget.

How to avoid it: Add toe kicks to your order from the start. You'll need enough linear footage to cover the front of all base cabinets, plus the sides of end cabinets. Order 10% extra for cuts and waste.

Cost of this mistake: $30 – $100 plus a trip to IKEA.

Mistake 7: Not Planning for Plumbing

What happens: Cabinets are installed and then the plumber can't connect the sink because the drain is in the wrong spot, supply lines don't reach, or there's no access hole cut in the cabinet back.

Why it's so common: Cabinet installation and plumbing are different trades, and homeowners don't always coordinate between them.

How to avoid it: Know your plumbing locations before ordering. Mark them during measurement (see our measurement guide). Plan your sink cabinet around existing plumbing when possible. If plumbing needs to move, schedule the plumber for rough-in work BEFORE cabinet installation. Read our plumbing guide for specifics.

Cost of this mistake: $500 – $2,000 in plumbing modifications after the fact.

Mistake 8: Ordering During Non-Sale Periods

What happens: You pay full price for your IKEA kitchen when a 15-20% sale might be just weeks away.

Why it's so common: People get excited and order immediately, or they're not aware IKEA has predictable sale patterns.

How to avoid it: IKEA typically runs kitchen sales 2-3 times per year. If your timeline allows, plan your purchase around these sales. Read our guide on when IKEA has kitchen sales for historical patterns and timing tips.

Cost of this mistake: $500 – $1,500 in missed savings.

Mistake 9: Not Checking Appliance Dimensions

What happens: The dishwasher doesn't fit under the countertop, the range sticks out past the cabinets, or the microwave is too wide for the upper cabinet opening.

Why it's so common: Similar to Mistake 5, but specifically about double-checking dimensions against the IKEA cabinet openings.

How to avoid it: IKEA base cabinets have a 24-inch internal opening for a dishwasher, which fits most standard dishwashers. But some European or specialty dishwashers are different. Verify everything. And remember that countertop overhang can reduce the effective opening height.

Cost of this mistake: $200 – $2,000 depending on what needs to change.

Mistake 10: Inadequate Ventilation Planning

What happens: There's no range hood, or the range hood can't be properly vented, or the ductwork doesn't fit through the cabinets and wall.

Why it's so common: Ventilation is an afterthought. People pick a range hood last and assume it'll work.

How to avoid it: Plan your ventilation from the beginning. Decide whether you want ducted or ductless. If ducted, plan the duct route (through the wall or through the ceiling). Make sure the wall cabinet above the range can accommodate the hood. Read our ventilation guide.

Cost of this mistake: $300 – $1,500 to retrofit ventilation after cabinets are installed.

Mistake 11: Skipping Cover Panels

What happens: Exposed cabinet sides — at the end of a cabinet run, the side of an island, or next to an appliance — show raw particleboard instead of a finished surface.

Why it's so common: Cover panels (also called end panels) are a separate order item, and the IKEA planner sometimes underestimates how many you need.

How to avoid it: Walk through your plan and identify every cabinet side that will be visible. Each one needs a cover panel in your chosen door style. Don't forget the sides of islands, peninsulas, and any cabinet that faces a doorway or open space.

Cost of this mistake: $50 – $300 per missing panel, plus a return trip to IKEA.

Mistake 12: Wrong Handle Placement

What happens: Handles are drilled into doors at inconsistent heights, in the wrong position (centered when they should be offset, or vice versa), or in a spot that looks awkward.

Why it's so common: People drill handles freehand without a template or consistent measurement system.

How to avoid it: Buy a handle drilling template (about $15-$30 at any hardware store or Amazon). Decide on your handle position before you start — upper cabinets typically have handles at the bottom, and base cabinets at the top, but there are different schools of thought. Use the template for every single door to ensure consistency. Mark, drill, and install one door first as a test.

Cost of this mistake: Potentially the cost of replacement doors if you drill in the wrong spot (holes in foil-wrapped doors can't be patched invisibly).

Mistake 13: Not Considering Lighting

What happens: The kitchen is dark. Under-cabinet task lighting wasn't planned for, so there's no wiring where it needs to be. Or recessed lights are blocked by wall cabinets.

Why it's so common: Lighting gets planned last or not at all.

How to avoid it: Plan lighting early. At minimum, plan for:

• Under-cabinet lighting — IKEA's OMLOPP or IRSTA LED strips, or third-party options. These need either a nearby outlet or wired connection.
• In-cabinet lighting — great for glass-front cabinets
• General overhead lighting — make sure recessed lights clear the tops of wall cabinets

If you need new electrical for lighting, that work must happen before cabinets are installed.

Cost of this mistake: $300 – $1,000 to retrofit lighting after installation.

Mistake 14: Forgetting About Water Shut-Off

What happens: During installation, someone needs to turn off the water and discovers the shut-off valve is rusted shut, missing, or located in an inaccessible spot behind the new cabinets.

Why it's so common: Nobody thinks about shut-off valves until they need one.

How to avoid it: Before installation begins, test your kitchen water shut-off valves. If they don't work, replace them. And plan your cabinet layout to ensure shut-off valves remain accessible — in Massachusetts and Connecticut, building code requires accessible shut-offs.

Cost of this mistake: $200 – $500 for emergency plumber, plus possible water damage.

Mistake 15: Not Verifying Floor Level

What happens: Cabinets are installed and then nothing lines up. Doors are at different heights across the run. Countertop has a visible slope. Drawers roll open by themselves.

Why it's so common: People assume floors are level. In New England, they almost never are — even in relatively new homes.

How to avoid it: Check floor level before ordering and again before installation. IKEA's adjustable legs can compensate for quite a bit, but you need to know what you're working with. See our guide on leveling cabinets on uneven floors.

Cost of this mistake: Hours of re-adjustment, or in severe cases, complete reinstallation of the base cabinet run.

The Meta-Mistake: Not Having a Complete Plan

The thread connecting most of these mistakes is inadequate planning. Rushing from "I want a new kitchen" to placing an IKEA order without thoroughly measuring, checking conditions, and thinking through every detail is the single biggest risk factor.

We get it — you're excited about your new kitchen, and planning feels tedious compared to picking out door styles and drawer organizers. But the planning phase is where projects are won or lost.

If you'd like professional help avoiding all 15 of these mistakes, Hearthstone Kitchens offers full planning, measurement, and installation services throughout Massachusetts, Connecticut, and Rhode Island. Contact us and let us make sure your IKEA kitchen goes smoothly from start to finish.