Only 7% of Kitchen Remodels Include One. In Bethesda and Potomac, It's the First Thing Clients Ask For: What a Prep Kitchen Really Costs in 2026
The 2026 U.S. Houzz Kitchen Trends Study puts it at roughly 7% of renovating homeowners — fewer than one in ten — who include a butler’s pantry or prep kitchen. That’s the national figure, across every price band in the country.
In the DMV’s higher-end neighborhoods, the ratio is inverted. On premium kitchen projects in Bethesda, Potomac, Chevy Chase, McLean and Great Falls, the second working space is very often the opening request — before cabinetry, before appliances.
And it has a new name. Not “butler’s pantry,” which sounds like a place to park a silver tray. Scullery. Or “prep kitchen.” The word came back through design media and short-form video attached to a specific promise: the main kitchen stays photograph-ready, and the actual work — the sheet pans, the stand mixer, the dish pile, the air fryer nobody wants to look at — happens somewhere else.
The promise is real. But two questions decide whether it’s a $22,000 line item or an $85,000 one, and neither is about cabinetry.
Where does the square footage come from? And what does a second sink and a second cooking appliance trigger, mechanically?
What people actually put in one
The Houzz data describes the real program rather than the aspirational one. Among homeowners who add a butler’s pantry or prep kitchen:
- 67% use it for small appliance storage
- 61% include prep counters
- 59% specify enclosed cabinetry (open shelving is also common, at 52%)
And the stated motivations are refreshingly unglamorous: 30% say it’s about keeping clutter out of sight, 22% say it’s additional storage.
Notice what is not at the top of that list. Not a second range. Not a second dishwasher. Not a wine wall. The center of gravity is counter, closed storage, and a place to hide the appliances — and that version is dramatically cheaper to build than the version circulating on social media.
There are three tiers, and they are not close in price. Treat every figure below as a planning estimate for the DMV market, not a quote — the only number that means anything is the one that follows a site visit.
Tier 1 — Dry scullery: counter, closed cabinetry, outlets. No plumbing.
Counter with upper and lower cabinets, plenty of dedicated circuits, task lighting, and a door. In the DMV at a decent finish level this typically lands in the mid-teens to high-$20,000s. No plumbing, usually no mechanical work. It isn’t a lesser version of the idea — for a family whose real problem is countertop clutter, it solves the whole problem.
Tier 2 — Wet scullery: add a sink and usually a dishwasher.
The common request, and where costs step up meaningfully — typically $30,000 to $55,000 here, heavily dependent on where it sits relative to existing plumbing. The cost isn’t the sink. It’s the venting and the drain.
Tier 3 — Full second kitchen: sink, dishwasher, and a cooking appliance.
Add a range, a cooktop, or a second wall oven with its own exhaust and you’ve crossed from “prep space” into “second kitchen.” Realistically $60,000 to well over $100,000 in the DMV, and this is where projects quietly acquire three permits nobody expected.
Where the square footage comes from — the DMV version
This is why generic national cost guides mislead people here.
Bethesda, Chevy Chase and Northwest DC are dominated by 1920s–1950s colonials and Tudors with compartmentalized floor plans. Potomac, Great Falls and much of McLean bring 1970s–2000s houses with more generous footprints but load-bearing interior walls in inconvenient places. In both cases, a scullery almost never comes from new square footage — it comes from annexing an adjacent room. In practice, one of five:
1. The formal dining room (or a slice of it). The most common source in older DMV homes and usually the best trade — most families stopped using the formal dining room years ago. Taking 6–8 feet off one end, or converting it entirely and relocating dining to a widened breakfast area, is often the cleanest path. Watch for: the kitchen/dining wall is load-bearing in a large share of center-hall colonials, which means a beam, a permit and a structural drawing.
2. The mudroom / back hall. Attractive because plumbing is close and the space is already utilitarian. The catch is that you’re spending your mudroom to buy a scullery, and in a four-season climate families regret that more often than they expect. Plan where coats, boots and bags land before you sign.
3. An oversized pantry or a closet cluster. Cheapest version when it works, but often too narrow — a working prep counter with a person in front of it wants roughly 42–48 inches of clear aisle, and a lot of pantries are 30.
4. The garage wall. Common in Potomac and McLean, and cheap per square foot — but you’re now conditioning unconditioned space, which brings insulation, air-sealing and a fire-separation detail into scope.
5. A small bump-out addition. The most expensive and the only one that doesn’t take space from something else. In Montgomery County this is where lot coverage, setbacks and sometimes stormwater management enter the conversation. If you’re contemplating a bump-out, price the full rear addition at the same time — the incremental cost per square foot usually favors going bigger once foundation and roof are already in the budget.
The two mechanical rules that decide your real price
Here’s what doesn’t appear in a cabinetry quote and shows up in the plumbing and HVAC bids.
A second sink needs a vent, and an air admittance valve isn’t automatically allowed
Every new fixture drain needs venting. A prep sink on an island, or on an interior wall away from the existing stack, is the classic hard case — there’s no straightforward path up through a wall to tie into the existing vent system.
The industry shortcut is an air admittance valve (AAV), a one-way mechanical vent under the cabinet. It’s legitimate technology accepted in many jurisdictions under specific conditions, but acceptance varies by jurisdiction and by installation, and plumbing codes generally require a conventional vent where one is practicable. Don’t let anyone assume an AAV at bid time. Have the plumber confirm the venting approach with the permitting authority before the design is locked — the alternative, a wet vent, a re-vent through the ceiling, or relocating the sink to a stack-adjacent wall, can change your floor plan, not just your price.
Add a dishwasher and you’re adding drainage fixture units to a branch sized decades ago. On a 1930s house with original galvanized or early copper waste lines, this is frequently where a straightforward scullery becomes a partial re-pipe.
A second cooking appliance can trigger makeup air
This surprises people most, and it isn’t a Montgomery County invention — it’s in the residential code. Broadly, a kitchen exhaust hood system capable of exhausting more than 400 cubic feet per minute has to be provided with makeup air: a means of replacing the air the hood throws outside, with at least one damper on the makeup air system.
Why it matters more here than in a 1990s tract house: DMV renovations increasingly produce fairly tight houses. Pull 600 or 900 CFM out of a tight house with no makeup air path and you depressurize it. At best the hood underperforms. At worst you backdraft a naturally vented water heater or fireplace and pull combustion products into the house.
A serious hood in the main kitchen will often clear that threshold on its own. Add a second vented appliance in the scullery and you have two hoods that can run at the same time — which is a real depressurization load on the house even where each unit is evaluated separately. How your jurisdiction treats a second hood is a question worth asking at design, not at inspection. Makeup air is a solvable engineering problem — a powered damper system, tempered where needed, interlocked with the hood — commonly a $3,000–$9,000 addition here. It’s only a crisis when it’s discovered after drywall.
One clarification, because clients ask: Montgomery County’s all-electric requirement applies to new construction. When the County adopted its building decarbonization legislation, major renovations and additions were removed from the requirement. A gas cooktop in a scullery in an existing Bethesda house isn’t prohibited by that rule — though it’s worth asking whether you want it, given where the county is heading and what a second gas line adds to scope. Confirm the current requirements with Montgomery County’s Department of Permitting Services before you specify gas.
Two details that decide whether you like the result
Door choice is functional, not stylistic. The premise is visual separation, and a cased opening with no door delivers about a third of the benefit. A solid-core swing door that stands open on a magnetic catch and closes when guests arrive is the version families actually use.
Wire for the appliances that are coming, not the ones you own. Appliances keep migrating in for years. Dedicated 20-amp circuits, more than seem necessary, and outlets inside the upper cabinets — so the coffee setup can live behind closed doors and still be used. A second working kitchen is also one of the more common reasons a DMV house runs out of panel capacity; if yours is already full, read our breakdown of 200-amp service upgrade costs in Bethesda, Potomac, Chevy Chase and McLean before you plan the circuits.
FAQ
Is a scullery the same thing as a butler’s pantry? Functionally, no. A butler’s pantry was a staging and storage space between kitchen and dining room. A scullery is a working space: sink, prep counter, cleanup, appliance storage. Most 2026 projects are a hybrid, which is why the terms get used interchangeably. What matters for your budget is whether it has plumbing and whether it has a cooking appliance.
Does a prep kitchen add resale value in Bethesda or McLean? In the premium DMV segment it reads as a genuine feature, particularly in larger houses where buyers expect an organized service zone. The caveat: if you create it by eliminating the only dining space in the house, you narrow your buyer pool. Take the space from a room you’ve stopped using, not from one the next owner will need.
Do I need a permit for a scullery? Almost certainly yes, in every DMV jurisdiction, once there’s plumbing, new circuits, or any wall modification. If a load-bearing wall is being opened, expect a structural drawing in the permit set. Unpermitted work creates a disclosure problem at sale and is expensive to prove compliant after the fact.
How long does it take? A dry scullery inside an existing room, coordinated with a kitchen remodel, often adds only a couple of weeks. A wet scullery with re-venting and a structural opening typically adds four to eight weeks — and assume the Montgomery County or Fairfax County permit timeline runs parallel with, not after, your cabinetry lead times.
Can I add one later, after the kitchen is done? You can, and it wastes money — the rough-in decisions that make a scullery affordable are made while walls are open. If it’s a “someday,” tell your builder now and have the rough-in stubbed and the panel sized for it. That costs a fraction of retrofitting.
Build it around the mechanicals
The scullery is one of the few design trends that earns its popularity. It’s also one where the interesting cost is invisible in a rendering — a vent path, a drain size, a makeup air damper, a beam over an opening that used to be a wall.
If you’re rethinking the main kitchen at the same time, our look at why DMV homeowners are trading all-white for warm white oak covers the finish side of the same project.
Karma Construction Group has been building and renovating in the DMV since 2012, and we’d rather have the plumbing and mechanical conversation at the sketch stage than deliver a change order at rough-in.
Call 202-798-7663, or request a free consultation at karmaconstructiongroup.com. Bring your floor plan. The first question we’ll ask is which room you’re willing to give up.