A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Garage Conversion Contractor Across Union City
Most garage conversions in Union City run between $85,000 and $165,000 for a full permitted ADU with kitchen and bath, while simpler living-space conversions without plumbing start around $55,000. The city’s ADU Express counter turns permits around in under 30 days, which means our crews often go from signed contract to demolition within a month. We know Union City’s post-war ranchers off Alvarado-Niles Road, the split-levels near James Logan High, and the clay-heavy soil that shapes every foundation decision here. If you’re weighing a garage conversion, call (669) 266-4319 and we’ll give you a written price before any work starts.
Why Lodgewick ADU San Jose Is Union City’s Preferred Garage Conversion Contractor Company
We’ve converted garages in the Decoto district, up in the hills off Mission Boulevard, and throughout the neighborhoods between I-880 and the BART line. Homeowners in Union City keep hiring us for one reason: we put the price in writing before we pick up a hammer. Russ Delmar runs our crews, and his rule is simple: no change orders at the door, no vague allowances buried in the contract, and a written guarantee on every job. When a Union City homeowner calls about a garage conversion, they talk to a live person, not a voicemail loop. Our 365-Day Done Right Promise means we come back free if anything fails within the guarantee period. That commitment is in writing on every single project, before work begins.
Scheduling and dispatch are coordinated from the brand’s San Francisco Bay Area office, and crews serve Union City locally. We’re not a distant operation throwing a crew over the hill and hoping for the best. We’re the Garage Conversion Contractor team that knows Union City’s permit desk, its soil, and its salt air.
Garage Conversion Permit in Union City
A Garage Conversion Permit in Union City is the city-issued approval that lets you legally convert an existing garage into habitable living space, and it’s faster here than nearly anywhere else in the Bay Area. Union City’s planning department runs an ‘ADU Express’ counter that issues permits in under 30 days, and the city waives all impact fees on residential garage conversions. Homeowners typically pay between $3,000 and $7,000 for plans, engineering, and permit fees for a standard garage conversion in Union City, depending on whether the garage is attached or detached and whether you’re adding plumbing.
What the Permit Covers
Union City’s permit process checks structural upgrades, foundation condition, insulation, electrical, and egress requirements. A garage built in the 1950s or 1960s almost always needs seismic anchors, shear wall upgrades, and possibly new footing work before the city signs off.
Fast Turnaround Through ADU Express
Because Union City waives impact fees and fast-tracks ADU permits, a garage conversion here often pencils out better than in Fremont or Hayward. We handle the drawings, the submittals, and the corrections, so you don’t spend your evenings on the city’s online portal. Call (669) 266-4319 and we’ll tell you exactly what your garage will need to pass.
Garage Conversion to Living Space in Union City
Garage Conversion to Living Space in Union City means turning an existing attached or detached garage into a finished room or full ADU without adding new square footage to your lot’s footprint. Most Union City homeowners choose this route because their 1950s-1970s rancher already has a two-car garage that sits empty while their family needs a bedroom, office, or rental unit. A basic living-space conversion with drywall, flooring, insulation, and electrical runs $55,000 to $90,000 in Union City. Adding a kitchen and bathroom pushes the range to $110,000 to $165,000.
Attached vs. Detached Conversion
An attached garage conversion in Union City typically costs 15-20% less than a detached one because electrical and plumbing lines run shorter distances from the main house. Detached conversions give you more privacy for a rental ADU, which matters if you live near the BART station and plan to rent to commuters.
What the Job Includes
We replace the garage door with a code-compliant wall and windows, pour a new floor or level the existing slab, insulate to current Title 24 standards, and run new electrical circuits. If you’re adding a bathroom, the shallow sewer laterals on Union City’s older tracts often mean we need to saw-cut deeper trenches or route drainage creatively. Russ Delmar walks every client through the foundation condition before we quote, because a cracked slab changes the budget, not just the schedule.
Trusted Brands We Service in Union City
We work with established ADU systems and materials so Union City homeowners don’t have to gamble on mismatched components. For prefab ADU shells, we regularly specify Abodu and Plant Prefab, both of which handle the coastal moisture and seismic requirements well. For durable exterior siding that holds up against bay fog and winter rain, we use James Hardie fiber cement on most Union City garage conversions. And when a homeowner wants a simpler storage-plus-workspace build inside a detached structure, we’ve framed with Tuff Shed components and finished them to living-space standards. We keep local stock of proprietary fasteners and trim pieces for these systems, so Union City projects don’t stall waiting on parts from a warehouse three states away.
Common Garage Conversion Contractor Problems We See in Union City Homes
- Salt-corroded anchor bolts from bay air. Garages built in the 1950s-1960s here often have sill plates bolted down with hardware that’s been eating salt fog for fifty years. We routinely find bolts so corroded they snap during sill removal, which means replacing every anchor before framing starts.
- Clay soil movement cracking existing slabs. Union City’s flat, clay-heavy soil near the bay expands in winter and contracts in summer. Garage slabs that looked fine in July show hairline cracks by January, and we assess every slab before spec’ing flooring.
- Shallow sewer laterals complicating new bathrooms. The older tracts off Alvarado-Niles Road and near Decoto often have sewer lines only 12-18 inches below the slab. Adding a bathroom to a garage conversion means deeper trenching or a pump system, and we tell clients about this before we quote, not after.
- Undersized electrical panels from the pre-ADU era. A 1960s Union City rancher usually has a 100-amp panel. A full garage ADU with kitchen and laundry needs 150-200 amps. We include the panel upgrade in our written price when it’s needed, so you’re not hit with a surprise change order.
Pricing for Garage Conversion Contractor in Union City, CA
A full garage conversion ADU with kitchen and bath in Union City runs $110,000 to $165,000. A simpler living-space conversion without plumbing starts around $55,000 and tops out near $90,000. What moves the number: whether the garage is attached or detached, whether you’re adding a bathroom, and whether your 1950s-era slab needs repair first. The coastal-spec materials we specify in Union City, hot-dip galvanized anchors, marine-grade window finishes, and sealed joints, add roughly $3,500 to $6,000 versus an inland-spec quote. We think that’s cheap insurance, because the inland spec starts failing in five to ten years. Every Union City quote we give is a written, line-item price. No allowances, no “we’ll see when we open the wall.” Call (669) 266-4319 to schedule your free estimate, and we’ll give you the real number before you sign anything.
We Also Serve Cities Near Union City
While this page focuses on Union City, our crews regularly handle garage conversions in Fremont, Palo Alto, Milpitas, and Los Altos. Each city has its own permit quirks and soil conditions, and we price each job to the specific lot, not to a regional average. If you’re just across the line in Fremont or Milpitas, the same written-price guarantee and 365-Day Done Right Promise apply. Call (669) 266-4319 and tell us which city you’re in.
Serving Union City, CA - Our Local Coverage Area
We’re based in the Union City area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Garage Conversion Contractor in Union City
Union City’s impact fee waiver applies to garage conversions, attached ADUs, and detached new construction alike. The city waives all impact fees for ADUs up to 1,200 sq ft on any residential lot, which is one reason garage conversions pencil out so well here compared to Fremont or Hayward, where fees can add $10,000 to $20,000 to a project. Call (669) 266-4319 and we’ll confirm the current fee schedule for your specific lot.
Union City’s ADU Express counter typically issues garage conversion permits in under 30 days, assuming your plans are complete and your lot has no unusual constraints. Our crew once moved a 1960s rancher off Alvarado-Niles Road from signed contract to final inspection in 23 days. Call (669) 266-4319 to find out what your timeline looks like.
Because air coming off San Francisco Bay carries chlorides that eat electroplated zinc fasteners within five years. We specify hot-dip galvanized anchors, stainless steel hurricane ties, and marine-grade window finishes on every Union City garage conversion, because we’ve seen the alternative: rusted, loose framing connections and water intrusion at window sills. The coastal spec costs a few thousand more upfront, but it’s what keeps your conversion from failing within a decade. Call (669) 266-4319 for a quote that names every fastener and finish, not just a bottom line.
Most 1950s-1970s garage slabs in Union City need some work before conversion, ranging from grinding and leveling at $1,500 to $4,000, to full slab replacement at $8,000 to $15,000 for badly cracked or spalled concrete. Clay-heavy soil near the bay expands and contracts with the seasons, so we inspect every slab before quoting. Call (669) 266-4319 and we’ll tell you exactly what your slab needs, in writing.
You can absolutely keep a storage room or workshop area inside your garage conversion. Union City’s ADU ordinance allows up to 1,200 sq ft of living space on any residential lot, and the law does not require the entire existing garage structure to become habitable. We regularly split a 500 sq ft detached garage into a 350 sq ft studio ADU with a separate 150 sq ft storage room, with a fire-rated wall between them. Call (669) 266-4319 for a free estimate, and we’ll work the floor plan around what you actually need to keep.
Contact Lodgewick ADU San Jose for Your Union City Garage Conversion
If you’re ready to talk real numbers on a garage conversion in Union City, call (669) 266-4319 today. Russ Delmar and the crew will give you a written price before any work starts, a real arrival window, and a written guarantee on the finished job. No surprises at the door, no vague allowances, and if anything fails within the 365-day guarantee period, we come back free. That’s The Kingswell Way, and it’s how we’ve built every garage conversion in Union City since 2010.
Written by Russ Delmar, Owner at Lodgewick ADU San Jose, serving Union City homeowners with the Kingswell Guarantee.
