New cabinets are the biggest single choice in most kitchen remodels. That choice usually splits into two very different paths. Ready-to-assemble cabinets, often called RTA or flat-pack, ship in boxes and get built on site. Custom cabinets are made to the exact measurements of your room. The honest answer up front: RTA can be a smart pick for a rental, a quick flip, or a simple, square kitchen on a tight budget. Custom earns its price when the room is older, oddly shaped, or meant to last for decades. Most North Shore kitchens fall into that second group. The sections below show where each option really wins.
Here’s the short version before we get into the details.
| Factor | Ready-to-assemble (RTA) | Custom |
|---|---|---|
| Upfront cost | Lowest; boxes ship flat | Highest; built to order |
| Fit to your room | Fixed sizes plus filler strips | Sized to the exact wall |
| Materials | Varies; check the box and finish | You choose the wood and joinery |
| Timeline | Fast once the boxes arrive | Weeks of lead time |
| Installation | Assembly plus a skilled install | Professional install included |
| Best for | Rentals, flips, simple square kitchens | Older or oddly shaped forever homes |
What “RTA” and “custom” actually mean
RTA cabinets are standard sizes that arrive flat. Someone assembles each box with screws, cams, and glue, then hangs them. You can do it yourself or pay an installer to do it for you. Custom cabinets are drawn for your kitchen and built in a shop. The sizes, finishes, and inside fittings are yours to choose.
There is a middle ground worth naming. Semi-custom lines let you modify stock sizes without going fully bespoke. If you’re still sorting out where you land on price and flexibility, our breakdown of the stock, semi-custom, and custom tiers is a good next read. RTA usually sits at the value end of that same range.
Upfront cost: RTA wins on the sticker
On price alone, RTA wins. Flat boxes are cheaper to ship and store, and you may supply the labor. That can trim a real amount off the cabinet line. It’s the strongest reason people choose RTA, and it’s a fair one.
The gap is smaller than the sticker suggests, though. Custom pricing already includes design, precise fitting, and professional installation. RTA does not. Once you add assembly, an installer, and any fillers or trim to cover gaps, the two move closer together. For a sense of the real range at the custom end, see what custom cabinetry costs on the North Shore. Then compare it to a fully finished RTA project, not just the box price.
Watch for the costs that don’t show on the box. Fillers, toe kicks, trim, and finished end panels are often priced separately with RTA. Shipping damage happens too, and a cracked door means a wait for a replacement. None of these sink a budget on their own. Together, they quietly narrow the gap between a flat-pack quote and a finished kitchen.
Fit: older North Shore homes rarely match RTA’s sizes
This is where custom pulls ahead for many local homeowners. RTA comes in fixed widths. When a wall does not divide evenly into those widths, you cover the leftover space with filler strips. In a newer, square kitchen, that’s barely noticeable. In an older home with walls that are out of square, the fillers add up fast.
And the North Shore skews old. In Northbrook, the median home was built in 1976, and about 34 percent of housing units went up between 1940 and 1969, according to the regional Community Data Snapshot for Northbrook. Homes from that era settle over time. Walls lean, floors dip, and corners drift off ninety degrees. Custom cabinetry is scribed and cut to those real conditions, so the runs look built-in instead of boxed-in.
That fit is the whole point of a custom kitchen built around your space in a vintage home. Odd angles, a chimney chase, a bumped-out radiator, a nine-foot ceiling worth using: custom absorbs all of it. RTA asks the room to meet it halfway, and old rooms rarely do.
Durability comes down to the box, not the label
Plenty of people assume RTA is flimsy and custom is bulletproof. That’s too simple. A well-built RTA box with solid joinery can outlast a cheaply made “custom” one. The better question is how the box is built and whether it is tested.
The industry has a real standard for this. In certified quality testing, doors are opened and closed through a full 90-degree swing for 25,000 cycles, and wall cabinets are loaded to hundreds of pounds without failing. Both RTA and custom lines can carry that certification, or skip it. Look for it either way.
Materials matter too. Many cabinet boxes, RTA and custom alike, use engineered wood such as plywood, and lower-cost lines lean on composite wood products like particleboard and MDF. Federal rules cap formaldehyde in those materials, so a compliant box is safe to live with. What varies is how well it holds a screw and shrugs off water over ten years. Ask what the box is made of before you compare prices.
Hardware is the other quiet difference. Full-extension, soft-close drawer glides and dovetailed drawer boxes are standard on good custom lines. On budget RTA, they’re often an upgrade or missing. They aren’t glamorous. But they’re the parts your hands touch every day, and they’re the first to wear out when they’re cheap.
Installation and permits shrink the DIY savings
RTA’s price edge assumes cheap or free labor. In practice, a kitchen is rarely a solo weekend job. Cabinets have to be level, plumb, and anchored so counters sit right and doors line up. A run that is off by a little looks off forever.
Local rules also close part of the gap. A kitchen remodel that touches wiring or plumbing needs a village permit, and that work must be done by licensed trades. The Village of Northbrook spells this out in its building permit requirements. So even a “DIY” RTA kitchen still pays for a licensed electrician or plumber the moment you move a circuit or a sink. Those costs land the same whether the box was flat-packed or custom-built.
Choose RTA if, choose custom if
Match your situation to the option, not the other way around.
- Choose RTA for a rental unit, a resale flip, a basement or garage kitchenette, or a newer kitchen with square walls and a simple, standard layout.
- Choose custom for an older home with out-of-square walls, a layout you want to change, tall ceilings you want to use, or a forever home where fit and finish carry weight.
Many kitchens sit somewhere in the middle, and that’s the case worth a second opinion before you buy anything. A short conversation can save a costly guess. If you’re on the fence, it’s worth the time to plan the cabinets with a designer who can measure the room and price both routes honestly.
Where custom genuinely loses
Custom isn’t the right answer for every job, and it’s fair to say so. It costs more, and it takes longer. Lead times run weeks, sometimes longer in a busy season, because the cabinets are built after you approve the plan. If you need a working kitchen fast, or the space is a simple box you plan to sell within a couple of years, custom can be overkill. RTA gets you a clean, functional kitchen sooner and cheaper. We’d rather tell you that than sell you more cabinet than your project needs.
Our own approach leans custom for a reason. As a design-build team based at our Northbrook showroom, one group designs the kitchen and manages the install, so the fit is our problem to solve, not yours. We work in American-made custom and semi-custom cabinetry that can be sized to a vintage home’s odd dimensions. And you can stand in front of full vignettes and real door samples before you commit, which is hard to do with a box you order online.
Frequently Asked Questions
Are RTA cabinets worth it for a full kitchen remodel?
They can be, if the kitchen is fairly new, the walls are square, and the layout is simple. In that setting, quality RTA gives you a solid kitchen for less. The value fades in older homes, where fixed sizes fight out-of-square walls and the fillers pile up.
Do custom cabinets last longer than RTA?
Not automatically. Lifespan tracks the box and joinery more than the label. A certified, well-built RTA box can outlast a cheap custom one. Check for quality-tested construction and ask what the box is made of, whichever route you take.
Can you mix RTA and custom cabinets in one kitchen?
Sometimes, and it can be smart. Some homeowners use stock or RTA on a simple wall and save custom for the island, a tricky corner, or a floor-to-ceiling run. Matching finishes and door styles is the hard part, so plan that pairing before you order.
Get a straight answer for your kitchen
The RTA-versus-custom call is easier once someone measures your actual room and lays out both numbers side by side. That’s what we do first, with no pressure to pick the pricier path. Book a design consultation and we’ll walk your kitchen, check the walls, and tell you honestly which route fits your home and your budget.