A basement kitchenette sits between a wet bar (sink and under-counter fridge only) and a full second kitchen (range, oven, full fridge and hood); the cooking appliance is what moves it up the ladder. Once a basement has a bedroom, a bathroom and a way to cook, especially with its own entrance, most cities treat it as a second dwelling unit.
In the Twin Cities that means ADU rules: Minneapolis allows basement ADUs up to 800 sq ft with a recorded owner-occupancy covenant, Lakeville and Plymouth allow them with their own permit conditions, and Maple Grove is still reviewing its rules, so call your city before you design the cooking space.
On this page
- Wet bar, kitchenette or second kitchen: what is the difference?
- Why a stove and a separate door can turn your basement into a "second dwelling unit"
- Can you put an ADU in a basement in the Twin Cities?
- Safety rules that matter in a basement guest suite
- Plumbing: does a basement sink need a pump?
- Which appliances work in a basement kitchenette?
- Laying out a guest suite in a 1,000 to 1,300 sq ft Twin Cities basement
- Where a kitchenette sits on the bar ladder (and what it costs)
- What to ask your city before you design a kitchenette
- Questions people ask
Wet bar, kitchenette or second kitchen: what is the difference?
When someone asks me for a kitchenette in a basement guest suite, the first thing I do is pin down which of three things they mean. The words get used loosely, but your city does not use them loosely. The difference comes down to one question: can you cook a meal there?
Minneapolis writes it down more clearly than most. Its zoning definitions call a wet bar "a secondary beverage preparation area not intended as a kitchen," limited to storage and workspace, a single-basin sink and an under-counter refrigerator. A kitchen is "a room or area for the cooking or preparation of meals" and, at minimum, has storage and workspace, a sink, a refrigerator, an oven and a stove. Appliances can be combined, as long as all the parts are there. Suburbs word it differently, but most draw the line in the same place: the cooking appliance.
| Wet bar | Kitchenette | Full second kitchen | |
|---|---|---|---|
| Sink | Single-basin bar sink | Bar or standard sink | Full-size sink, often double bowl |
| Refrigerator | Under-counter (Minneapolis caps a wet bar at this) | Under-counter or compact; ENERGY STAR calls anything under 7.75 cu ft "compact" | Full-size (7.75 cu ft or larger) |
| Cooking appliance | None | Microwave or microwave drawer, sometimes a 120V two-burner induction cooktop | Range or cooktop plus oven |
| Power | Ordinary 120V circuits | 120V circuits, often a dedicated one for the microwave | A 240V range circuit (40 or 50 amp on a typical 30-inch electric range) |
| Range hood | Not needed | Depends on the cooking appliance; plan for one if there is a cooktop | Yes, and makeup air can come into play on large fans |
| Dishwasher | Rare | Optional dishwasher drawer | Usually full-size |
| How a city tends to read it | Accessory to the main house | Gray zone; ask before you build | A second kitchen, which in many cities means a second dwelling unit |
The kitchenette is the in-between option and the one that causes the most confusion. A sink, an under-counter fridge and a microwave drawer usually reads as a nice bar. Add a cooktop and you have crossed into meal preparation, and in many codes that is the line. For the cost side of the bar options, see my basement bar guide.
Why a stove and a separate door can turn your basement into a "second dwelling unit"
Building and zoning codes define a dwelling unit as a single unit with complete, independent living facilities: permanent provisions for living, sleeping, eating, cooking and sanitation. Minneapolis's version is a separate living quarter "with a single kitchen facility, sleeping area, and bathroom provided within the unit" for one household.
Look at what a basement guest suite already has: a bedroom (sleeping), a bathroom (sanitation) and a sitting room (living). The only missing piece is cooking. Add a stove and the basement checks every box. Add a separate outside entrance and a lockable door at the top of the stairs, and it looks, functions and can be rented like its own apartment. That is the point at which a city stops treating it as a finished basement and starts treating it as an accessory dwelling unit (ADU), or in some codes, a two-family dwelling.
Lakeville's code says it directly. In its RS-3 single-family district, "separate living quarters that include kitchen facilities for housing multiple generations" are a specific use that needs an administrative permit. It is the kitchen that triggers the rule, not the bedroom.
What changes once it is a second unit
- Zoning: the house needs to be on a lot and in a district where an ADU is allowed, and it has to meet that city's size, parking, entrance and owner-occupancy rules (next section).
- Building code: the residential code treats dwelling units as separate spaces. Plymouth's ADU handout, for example, calls for fire separation between the ADU and the house, a 20-minute or solid-core door, hardwired smoke and CO alarms, and heating controls inside the ADU.
- Use: some cities limit who can live there or ban short-term rentals in ADUs. Plymouth does not allow ADUs to be used as short-term rentals.
None of this is a reason not to do it. It is a reason to decide early which version you want, because a fire-rated separation and a permit for a second unit are much easier to plan in than to retrofit.
Can you put an ADU in a basement in the Twin Cities?
It depends entirely on the city, and in some suburbs, on the zoning district. Here is what I found in the city codes and handouts for Minneapolis and three suburbs that match the reference home.
| City | Internal (basement) ADU allowed? | Key requirements I found | What I would ask the city |
|---|---|---|---|
| Minneapolis | Yes. Internal, attached and detached ADUs are all defined. | One ADU per lot. Internal ADU 300 to 800 sq ft (can be larger if the structure existed as of January 1, 2015), on one level and not larger than the first floor. Must be smaller than the main unit. New entrances may not face the street. Owner must live in the house or the ADU, recorded as a covenant with Hennepin County before the building permit is issued. Separate ADU application plus a building permit. | Does my basement plan fit the one-level and size limits? |
| Lakeville (RS-3 district) | Yes, as "separate living quarters" with kitchen facilities, by administrative permit. | Not more than 30% of the principal building's gross floor area (attached garage area excluded). No more than two bedrooms. An interior connection to the main house that cannot be locked with a deadbolt or keyed lock. One meter per utility, one heating and air conditioning system, one postal address. At least three attached garage stalls with direct access. | What applies in my zoning district if I am not in RS-3? |
| Plymouth | Yes. Internal units (within the home), attached and detached ADUs on single-family lots in FRD, RSF-1, RSF-2, RSF-3 and residential PUD districts. | One ADU per property. Owner must live on the property, recorded before the certificate of occupancy. ADU needs its own entrance on the side or rear. One extra off-street parking space. No short-term rentals. Building permit, administrative ADU permit and a rental license if needed. Fire separation, 20-minute or solid-core door, hardwired smoke and CO alarms. | Does a guest suite with no cooking still need the ADU permit? |
| Maple Grove | Unclear. A 2022 survey of metro ADU rules listed Maple Grove as having no ADU ordinance. In January 2026 the council asked staff for an overview of current ADU rules. | Call before you design a cooking space. | Is a basement unit with a kitchen allowed today, and is an ordinance coming? |
Check with your city: these rules were current in the sources I opened, but cities amend ADU codes often. Plymouth allowed ADUs only above garages until it moved to allow units within a home, and a 2025 Minnesota Senate bill (S.F. 3418) proposed requiring many cities to allow ADUs. It was a bill, not law, when I checked. Call your city's planning or zoning desk with your address before you buy a single cabinet.
The two rules that surprise people most
Entrances go both ways. Plymouth requires an ADU to have its own entrance on the side or rear. Lakeville requires an interior connection to the main house that cannot be deadbolted. Minneapolis says new ADU entrances may not face the street. A walkout basement can satisfy all three, but each city wants something different.
Owner occupancy. Minneapolis, Plymouth and Lakeville's single-utility rules all assume the family stays on site. If your long-term plan is to rent the suite to a stranger, say so at the counter, because the answer may change.
Safety rules that matter in a basement guest suite
These apply whether or not your city calls the space an ADU. Minnesota builds to the 2020 Minnesota Residential Code, which adopts the 2018 International Residential Code with state amendments, effective March 31, 2020.
Egress for the bedroom
Every basement and every sleeping room needs at least one operable emergency escape opening. Prior Lake's basement handout, which follows the state code, lists the numbers: a net clear opening of 5.7 sq ft (5.0 sq ft if the sill is within 44 inches of grade), at least 20 inches wide and 24 inches high, with the sill no more than 44 inches above the finished floor. A below-grade window needs a well at least 36 by 36 inches, and a well deeper than 44 inches needs a permanent ladder or steps. I cover this in more detail in the permits and egress guide.
Smoke and carbon monoxide alarms
Smoke alarms go in every bedroom, in the hallway outside bedrooms and on every level. Minnesota Statutes section 299F.51 requires every single-family dwelling and multifamily dwelling unit to have an approved, working carbon monoxide alarm within ten feet of each room lawfully used for sleeping. A new basement bedroom next to a gas furnace and water heater is exactly the case that law was written for. Plymouth's ADU handout calls for hardwired smoke and CO alarms in an ADU.
Ventilation and the range hood
Under the IRC's range hood rules (M1503), a ducted hood has to discharge outdoors, not into a ceiling cavity, joist bay or garage, unless you use a listed and labeled ductless hood installed to its listing. In a basement, that means planning a duct route to a rim joist early, before the ceiling is framed. On larger fans, Minnesota's 2020 Mechanical Code uses its own makeup-air calculation once a fan exceeds 300 cfm, and the result depends on how your furnace and water heater are vented. A kitchenette rarely needs a big fan, which is one more reason I keep basement cooking small.
GFCI at the counter
The 2023 National Electrical Code extended GFCI protection to all 125V through 250V receptacles in kitchens, not just the countertop ones, and added GFCI protection for certain appliances including electric ranges, wall ovens, counter-mounted cooking units and microwave ovens. Minnesota adopted the 2026 NEC for electrical permits filed on or after August 17, 2026, so your electrician will apply whichever edition your permit falls under. Either way, plan on GFCI protection at every receptacle within the kitchenette.
Plumbing: does a basement sink need a pump?
Water runs downhill. A basement sink drains by gravity only if the building sewer leaves the house lower than the sink's drain. If the sewer line is higher than your basement fixtures, the wastewater has to be pumped up to it. In many of the 1985 to 2015 homes I design for, the builder left a bathroom rough-in in the slab, often tied to a basin, which tells you how that house was plumbed.
| Pump type | What it handles | How it works |
|---|---|---|
| Sewage ejector | Toilets plus anything else: basement bathrooms, laundry | Waste collects in a basin set into the floor. A float rises with the level and starts the pump, which pushes waste up to the sewer line, then shuts off as the level drops. A check valve keeps it from draining back. Pumps handling bathroom waste need a sealed lid and a vent for sewer gases. |
| Drain (gray water) pump | Sinks, showers, washing machines; no toilets | A smaller system that collects gray water from fixtures like laundry tubs and bar sinks and pumps it into the sewer waste line where a gravity drain is not available. |
For a guest suite, the bathroom usually decides this. If the suite has a toilet below the sewer line, you need an ejector anyway, and I put the kitchenette sink on the same wall so it can share that drain. If there is no bathroom and only a bar sink, a drain pump under the cabinet may be enough. Edina's homeowner guide suggests choosing a pump with a failure alarm and having a plumber service it every year; I agree, especially below a bedroom.
Which appliances work in a basement kitchenette?
I pick appliances by the circuit they need and the cabinet they fit, because those decide how much of the panel and the wall the kitchenette eats.
| Appliance category | Power it needs | Why I like it (or not) in a basement |
|---|---|---|
| Compact or under-counter refrigerator | Ordinary 120V receptacle | Fits under the counter and keeps the room feeling like a suite, not an apartment. ENERGY STAR treats anything under 7.75 cu ft as compact. |
| 120V induction cooktop (two burner) | A 120V circuit; one built-in model draws 20 amps, with an 1,800W maximum shared between burners | No 240V run from the panel. Induction heats the pan through a magnetic field, so the surface stays cool. ENERGY STAR puts induction at about 85% efficient, versus roughly 75 to 80% for resistance elements and about 32% for gas. |
| 240V cooktop or range | A 240V circuit; a typical 30-inch electric range calls for a 40 or 50 amp supply | Full cooking power, but this is what makes a basement a second kitchen. It also uses panel capacity and usually brings a hood. |
| Microwave drawer | 120V, protected at 15 amps or more; the manufacturer recommends a circuit serving only the drawer | Sits under the counter in a 24-inch opening, so the counter stays clear. Easy for guests of any height. |
| Dishwasher drawer | 120V; one single drawer model lists a 4.2 amp minimum | Fits a 24-inch cabinet width. It needs a hot water supply and an air gap or high loop on the drain, so it goes next to the sink. |
My default kitchenette for a guest or in-law suite is a sink, an under-counter fridge, a microwave drawer and, if the city is comfortable with it, a 120V induction cooktop under a ducted hood. It handles coffee, breakfast and reheating dinner without a 240V range circuit.
Check with your city: in Minneapolis's definitions, a kitchen needs a sink, refrigerator, oven and stove, with components allowed to be combined. Whether a microwave plus a two-burner cooktop counts as a "kitchen" is a question for your zoning office, not something to guess.
Laying out a guest suite in a 1,000 to 1,300 sq ft Twin Cities basement
Picture the reference home: a 1990s or 2000s two-story in Lakeville or Maple Grove with a poured foundation, a beam and a main duct trunk running down the middle, the furnace and water heater in one corner and the sump in another. When I lay out a guest suite here, I work from four fixed points.
- Bedroom on an egress wall. The bedroom goes where an egress window can be cut or already exists, away from the furnace room door and close to the CO alarm the law already requires.
- Bathroom over the rough-in. If the builder left a rough-in, the bathroom sits on it. Moving it means breaking slab and possibly adding an ejector.
- Kitchenette on the bathroom's wet wall. Sharing the wall shares the drain, the vent and the supply lines. In a walkout, I put the kitchenette near an exterior wall so a hood duct is a short run.
- Sitting area in the open middle. The beam and duct trunk usually run here anyway, and a soffit reads fine over a sofa.
The mechanical room stays a mechanical room, with clear access to the furnace, water heater and panel. In a 1,000 sq ft basement, a full suite takes most of the space, so I ask clients whether the family also wants a rec room down there. At 1,300 sq ft, a suite plus a modest family room can both work. For how I split zones, see my basement layout guide.
Check the size math against your city before you finalize. In Lakeville's RS-3 district the separate quarters are capped at 30% of the principal building's gross floor area, excluding the attached garage, so a home with 3,000 sq ft of gross floor area tops out at 900 sq ft. Minneapolis caps an internal ADU at 800 sq ft in most cases. A suite that is fine as a guest wing can be too big as an ADU.
Where a kitchenette sits on the bar ladder (and what it costs)
A kitchenette is the next step up from a wet bar, so the bar allowances are a useful frame. In the basements I price, a wet bar with a stone counter runs about $8,500, a wet bar with upper cabinets about $12,500, and a designed bar with a seating counter about $22,000. A guest-suite kitchenette adds the cooking appliance, the hood duct and any extra circuits on top of that cabinetry, and Emma prices that for your own basement because it depends on the appliances and where the circuits run. My basement bar guide walks through the full ladder, and the overall project budget lives in my budget tier guide and the Minneapolis basement cost guide.
What to ask your city before you design a kitchenette
- Is a basement with a bedroom, bathroom and kitchenette an accessory dwelling unit, and which appliance makes it one?
- Is an internal ADU allowed in my zoning district, and what permit does it need?
- What are the size limits, and is it measured against the whole house or one floor?
- Does the unit need its own entrance, or an unlockable interior connection, or both?
- Is owner occupancy required, and is it recorded on the deed?
- Are separate utility meters allowed or prohibited? Is a separate address allowed?
- What fire separation, door and alarm requirements apply between the units?
- Can it be rented, and can it be a short-term rental?
If the answers point to a full ADU, that is often a fine outcome. If they point to keeping it a guest suite with a wet bar and a microwave drawer, that is often the simpler, cheaper path, and it still gives a parent or a long-staying guest a real place to make breakfast.
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Design my basement with EmmaQuestions people ask
What is the difference between a wet bar and a kitchenette in a basement?
A wet bar is a sink, an under-counter fridge and storage for drinks and snacks; Minneapolis's code limits a wet bar to exactly that. A kitchenette adds a way to heat or cook food, such as a microwave drawer or a small cooktop. Once a cooking appliance goes in, many cities start asking whether the space is a second kitchen.
Can I put a kitchen in my basement in Minnesota?
Often yes, but whether it is allowed and what it triggers depends on your city. A basement with a bedroom, bathroom and full kitchen meets the definition of a dwelling unit, so many cities treat it as an accessory dwelling unit with size, entrance and owner-occupancy rules. Call your city's zoning office with your address before you design it.
Does Minneapolis allow basement ADUs?
Yes. Minneapolis allows internal ADUs of 300 to 800 sq ft (larger if the structure existed as of January 1, 2015), on one level and no larger than the first floor. The owner must live in the house or the ADU, recorded as a covenant, and new entrances may not face the street. You need an ADU application plus a building permit.
Do I need a range hood for a basement kitchenette?
If you put in a cooktop, plan for one. Under the IRC's range hood rules, a ducted hood must discharge outdoors, not into a joist bay or ceiling, unless you use a listed ductless hood installed to its listing. Minnesota's mechanical code adds a makeup-air calculation for fans over 300 cfm.
Does a basement sink need a pump?
Only if the sink drain sits below the sewer line leaving your house. A sink with no toilet can use a gray water drain pump; a bathroom with a toilet needs a sewage ejector with a sealed, vented basin and a check valve. I put the kitchenette sink on the bathroom's wet wall so it can share the drain.
Do I need a carbon monoxide alarm in a basement bedroom in Minnesota?
Yes. Minnesota Statutes section 299F.51 requires an approved, working CO alarm within ten feet of each room lawfully used for sleeping. Smoke alarms are also required in every bedroom, in the hallway outside bedrooms and on every level.
Can I use a 120V induction cooktop instead of a 240V range?
Yes, small 120V induction cooktops exist; one two-burner built-in model runs on a 20 amp circuit with an 1,800W maximum shared between burners. It avoids a 240V run from the panel and stays cool to the touch. Ask your city whether it counts as a stove for zoning purposes.
Sources (26)
- City of Minneapolis: Accessory dwelling unit (land use application) — ADU application plus building permit; owner-occupancy covenant required for internal ADUs
- City of Minneapolis: Accessory Dwelling Unit Application (PDF) — Internal/attached/detached definitions; one per lot; 300-800 sq ft, one level, not larger than first floor; entrances not facing street; owner occupancy covenant
- Minneapolis zoning code Chapter 565, Definitions — Definitions of wet bar, kitchen, dwelling unit and accessory dwelling unit
- City of Minneapolis: Owner-occupancy requirement for accessory dwelling units amendment — Background on Minneapolis ADU owner-occupancy rules
- Lakeville City Code 11-52-11, RS-3 Uses by Administrative Permit — Separate living quarters with kitchen facilities by administrative permit; 30% of gross floor area; two bedrooms; interior connection; single meters, HVAC and address; three garage stalls
- City of Plymouth: Accessory Dwelling Units (ADUs) for Single-Family Homes handout — Plymouth ADU types, districts, owner occupancy, side/rear entrance, parking, no short-term rentals, fire separation, 20-minute door, hardwired smoke and CO alarms
- City of Plymouth news: changes to allow accessory dwelling units — Plymouth previously allowed ADUs only above garages; proposal to allow units within a home
- City of Ramsey: Accessory Dwelling Unit Research (2022) — Maple Grove listed as having no ADU ordinance in 2022
- Citizen Portal: Maple Grove considers ADU code review (January 2026) — Maple Grove council directed staff to review ADU rules
- Minnesota Senate S.F. 3418 (2025), accessory dwelling units bill — Proposed statewide ADU requirement; introduced bill, not law
- Minnesota Statutes 2024, section 299F.51 (carbon monoxide alarms) — CO alarm required within ten feet of each room lawfully used for sleeping
- Minnesota DLI: 2020 Minnesota Residential Code fact sheet — MN Residential Code adopts 2018 IRC with amendments, effective March 31, 2020
- City of Prior Lake: basement finish / egress handout — Egress window dimensions, window well and ladder rules, smoke alarm locations, CO within 10 feet of bedrooms
- Minnesota DLI: 2023 NEC frequently asked questions — GFCI for all 125-250V kitchen receptacles; GFCI for ranges, wall ovens, cooking units, microwaves
- Minnesota DLI: Electrical codes and standards — Minnesota adopted the 2026 NEC effective Aug. 17, 2026
- Structure Tech: What's the largest kitchen hood fan I can install without makeup air? — Minnesota 2020 Mechanical Code makeup air calculation for fans over 300 cfm; IRC M1503.6 400 cfm comparison
- Open Exam Prep: IRC range hoods and kitchen exhaust systems (M1503) — Range hoods discharge outdoors unless listed ductless; not into cavities or garage
- City of Edina: Sewage Ejector Pump guide — How a sewage ejector works; sealed lid and vent; check valve; alarm and annual service
- Liberty Pumps: Model 404 drain pump — Gray water drain pumps for sinks, showers and washers where gravity drains are not available
- ENERGY STAR: Refrigerators key product criteria — Compact refrigerators defined as less than 7.75 cubic feet
- ENERGY STAR: Residential induction cooking tops — How induction works; about 85% efficiency vs 75-80% resistance and 32% gas; cool surface
- Summit Appliance SINC2B120 120V induction cooktop — Example 120V two-burner built-in induction cooktop: 20 amps, 1,800W shared maximum
- Whirlpool WFE530C0E electric range spec sheet — 30-inch electric range 120/240V, 40 or 50 amp supply
- Sharp SMD2440JS microwave drawer installation instructions — 120V, 15A or more, separate circuit recommended, 24-inch opening
- Fisher & Paykel DD24ST4NX9 single DishDrawer installation guide — 120V minimum 4.2A; hot water supply; air gap or high loop drain; cabinet width
- Energy Code Ace glossary: Dwelling unit — Standard code definition of a dwelling unit (living, sleeping, eating, cooking and sanitation)
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Keep reading
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- How should I lay out my finished basement?
- Do I need a permit to finish my basement in Minnesota?
- What does $50K, $65K or $80K buy in a Twin Cities basement?
- What should you do with the mechanical room when you finish a basement?