What a kitchenette costs in a JADU or ADU garage conversion

A different scope than a full kitchen remodel

An ADU or JADU kitchenette is a much smaller project than a full kitchen remodel, but it isn’t a minor afterthought either. It’s typically the second-most complex system in a garage conversion after the bathroom, since it involves plumbing, electrical, ventilation, and cabinetry all coming together in a compact footprint. Most cost guides for garage conversions give it one line, often just $3,000-$8,000 for “sink and dishwasher,” which covers the rough plumbing but not the actual kitchen you’d want to cook in.

What counts as an efficiency kitchen

A JADU is generally built around an efficiency kitchen, a compact setup with a sink, a cooktop or small range, and a refrigerator, rather than the full range of appliances and counter space in a standard kitchen. The exact scope of what qualifies has legal definitions under state ADU and JADU law that have changed over time and can change again. Confirm the current definition and any size or appliance limits that apply to your specific project with San Diego Development Services before finalizing your kitchen design, since a kitchenette built outside the current JADU parameters can complicate your permit approval.

Cabinets and countertops

For a compact efficiency kitchen layout, expect $3,000-$7,000 for stock or semi-custom cabinetry covering a run of upper and lower cabinets plus a small island or peninsula if space allows. Laminate or butcher block countertops run $500-$1,500 for a typical kitchenette footprint. Quartz or solid-surface countertops, a nicer upgrade that also holds up better to daily wear, run $1,500-$3,500 for the same footprint.

Appliances

A compact appliance package built for small spaces, an 18-24 inch dishwasher, a two or four-burner cooktop or a small combination range, a compact refrigerator, and a range hood or microwave-hood combo, typically runs $2,500-$5,000 for mid-range appliances. Full-size appliances scaled down to fit, rather than purpose-built compact models, can push that higher depending on brand and finish. Stainless steel finishes generally cost more than white or black options across every category.

Plumbing and electrical specific to the kitchen

Beyond the general rough plumbing already covered in a project’s overall plumbing budget, the kitchen area needs its own supply and drain lines for the sink and dishwasher, a dedicated circuit for the range or cooktop if it’s electric, and a garbage disposal circuit if one is included. Budget $1,500-$3,500 for this kitchen-specific electrical and plumbing work, on top of the general rough-in costs already priced into the overall project.

Ventilation matters more in a compact space

A range hood or downdraft ventilation system is worth prioritizing in a small kitchenette, since cooking odors and grease have less room to dissipate than in a full-size kitchen with more air volume. A basic ducted range hood adds $300-$800 to the project; a quieter, higher-capacity model with better filtration runs $600-$1,200.

Layout choices that affect cost

A galley layout, cabinets and appliances along a single wall, is the most space-efficient and typically the least expensive to build, since it keeps plumbing and electrical runs short and simple. An L-shaped layout with a small peninsula adds counter space and a more livable feel but needs a bit more floor area and slightly more complex cabinetry. A layout with an island, rare in a true efficiency kitchen given typical converted garage dimensions, adds cost and usually only fits in a full ADU conversion with a larger footprint than a standard single-car garage provides.

Where used or discounted materials can help

Some homeowners manage the kitchenette budget by sourcing cabinets through a big-box in-stock line rather than semi-custom, or by choosing a laminate countertop with a stone-look finish instead of actual quartz. These choices genuinely lower the finish tier without making the space non-functional, and for a rental JADU where durability and a tenant’s daily use matter more than showroom looks, that tradeoff is often the right call. Reserve the higher-end finish budget for a kitchenette that’s part of your own living space or a unit you expect a family member to use long-term.

Putting the full kitchenette budget together

Add cabinets, countertops, appliances, and the kitchen-specific plumbing and electrical work, and a complete, functional JADU or ADU efficiency kitchen typically runs $9,000-$18,000 for a mid-range finish, well above the single $3,000-$8,000 line most general cost guides quote for “kitchen” plumbing alone.

What’s the difference between a JADU kitchen and a full ADU kitchen?

A JADU is generally built around a smaller efficiency kitchen with defined scope, while a full ADU can include a complete kitchen similar to a standard home. Current legal definitions for what qualifies as each vary and can change; confirm the specifics for your project with San Diego Development Services.

Can I upgrade a JADU kitchenette to a full kitchen later?

Sometimes, depending on your permit classification and the physical space available. This is worth discussing with your contractor and the building department at the design stage rather than after construction, since it can affect your project’s classification.

Does a kitchenette add resale or rental value?

A functional kitchenette is usually what makes a garage conversion attractive as a rental unit rather than just a bonus room, since it lets a tenant live independently from the main house. For homeowners planning to rent the space out long term, that independence is often the real difference between modest tenant interest and a genuinely competitive rental listing in San Diego’s market.

What’s the cheapest way to build a functional kitchenette?

Stock cabinetry, laminate countertops, and a compact appliance package built for small spaces keep costs toward the lower end of the range while still providing a fully functional efficiency kitchen.

To plan the kitchenette layout and budget for your JADU or ADU conversion, see our junior ADU conversion page or call (858) 400-4935.

Garage Convert SD connects San Diego homeowners with experienced, insured crews for JADU and ADU garage conversions. Call (858) 400-4935 for a free consultation.