5 Common Kitchen Layout Mistakes (And How to Avoid Them)

After 20+ years of designing and building kitchens in Los Angeles, the same five layout mistakes keep showing up in projects clients ask us to fix or replace. None of them are obvious from a floor plan. All of them are avoidable. Here's what we look for.

Mistake 1: The work triangle is broken

The "work triangle" connects the three primary stations — sink, refrigerator, and range. Ideally, the sum of the three sides should be between 13 and 26 feet, and no single side longer than 9 feet. Too tight and the kitchen feels cramped. Too loose and you're walking laps.

Where this goes wrong: clients fall in love with a layout from a magazine or showroom that has fridge on one wall, sink on another, and range on a third — but the distances don't match how they actually cook. Open your current kitchen and walk through making one meal — do you feel like you're walking too much, or doing the same task in cramped quarters? That's the diagnostic.

The fix: design the triangle first. Then design around it.

Mistake 2: Insufficient counter space adjacent to the range

You need at least 12 inches of counter on one side of the range and 15 inches on the other for safe and functional cooking. Not "near" the range — adjacent and on the counter at the same height. We see kitchens where the range is in a corner with cabinets on one side and a wall on the other. Pretty in photos. Painful in practice.

Same rule for the sink: 18 inches minimum on at least one side for prepping and stacking dishes. Sinks tucked into corners or with cabinets on both sides too close are the most-replaced feature in remodel-of-a- remodel projects.

Mistake 3: The island is too big or too small

Islands need 36–42 inches of clearance on all sides for normal traffic flow. 48 inches if two people work in the kitchen simultaneously. We see two failure modes:

• Too big. A 10-foot island that looks impressive in a rendering but blocks the natural path from kitchen to dining room. People stop using it as anything but a drop zone.
• Too small. A 4-foot island stuck in the middle that feels in the way without adding meaningful counter or storage. Just not big enough to earn its footprint.

The right size depends on your kitchen footprint and how you use it. A useful island is 6–8 feet long and 36–42 inches deep, with at least one straight side facing the main cooking area for prep and clearance for stools on the opposite side.

Mistake 4: Lighting is an afterthought

Most failed kitchens have one common problem: a single ceiling fixture in the middle, recessed cans scattered without intention, and no task lighting. The result is a kitchen that's bright when you don't need it to be and dark exactly where you're cooking (because your body shadows the counter).

Layered lighting is the rule:

• Ambient: recessed cans on dimmers, evenly spaced
• Task: under-cabinet lighting on every counter run, plus pendants over the island and sink area
• Accent: in-cabinet lighting for glass-fronted cabinets, toe-kick lighting if you want subtle drama

Color temperature matters. 2700K–3000K is warm and flattering for an evening atmosphere. 3500K–4000K is brighter and more functional but can feel clinical. Most successful LA kitchens use 2700K on dimmers for ambient + 3000K for task.

Mistake 5: Ignoring the dishwasher relationship

The single most-overlooked detail: the dishwasher should be next to the sink, AND there should be cabinet space on the opposite side of the dishwasher to put dishes away when unloading. We see kitchens where the dishwasher is across the kitchen from the sink (you carry wet dishes, drip, ugh) or with the only cabinet space on the same side as the sink (you have to walk around the open dishwasher door to put plates away).

Also: leave 21 inches of clearance in front of an open dishwasher door. Less than that and it blocks foot traffic.

The principles behind the mistakes

All five mistakes share a common cause: someone designed the layout visually rather than functionally. The kitchen looks great as a rendering or floor plan but doesn't work well when someone is actually cooking in it.

Our approach when we design a kitchen:

1. Start with how you cook. Family dinners? Big entertaining? Quick weeknight meals only? Each pattern leads to different layout priorities.
2. Sketch the work triangle first. Sink + range + fridge. Get the relationships right before placing anything else.
3. Lay out counter zones. Prep zone (next to sink), cook zone (next to range), serve zone (next to dining flow). Each needs counter space.
4. Place the island. Confirm clearance on all sides at full traffic flow.
5. Layer the lighting. Plan ambient, task, and accent simultaneously, not as last-minute fixture choices.
6. Test it on paper. Walk through a cooking sequence on the floor plan. Where do you stand? Where do you reach? What's awkward?

When to hire a designer vs. trust the contractor's plan

If you're doing a basic refresh in the existing footprint, a contractor-designer who has done many similar kitchens can lay out a great plan. If you're moving walls, opening to other rooms, or significantly reconfiguring — invest in proper design. Either bring in a kitchen designer or hire a design-build firm that does both.

The cost of bad layout reaches far beyond aesthetics: it's daily frustration for the next 15–20 years and a meaningful resale penalty when the next buyer sees the awkwardness.

Posted by Onn Cohen Meguri, founder of Design Onn Point. CSLB License #1133368.