An attic or a garage is the cheapest room you'll ever add — the roof and the foundation are already paid for. The catch is making it a real room: headroom and stairs that pass code, an egress window, insulation that keeps it livable in August, heat and AC, and a permit so it counts when you sell. We check zoning first, then design, permit and build it with one crew — plumbing and electrical included.
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An attic or a garage is the cheapest room you'll ever add — the roof and the foundation are already paid for. Typical price: $35K – $130K+. Licensed & insured, written itemized price before work starts, no deposit, one dedicated crew. Serving all 21 New Jersey counties from Paramus. Call (201) 676-3099 or book a free estimate.
Before we draw anything, we check three things. Zoning: some towns limit garage conversions, count them against parking, or won't allow a separate entrance that looks like a second unit. Structure: attic joists were sized for storage, not a bedroom, and often need sistering. Code: a habitable attic needs 7 feet of headroom over half the floor area, a real staircase, and an egress window. You get the yes, the no, or the 'yes, if' before you spend a dollar.
What turns a hot, dark attic into the best room in the house:
A garage is a big, dry box with a slab — no insulation, no heat, and a floor a step down from the house. We frame in the door opening with a wall and windows that match the house, build an insulated subfloor over the slab, insulate the walls and ceiling, add a mini-split, run the electrical, and finish it like any room. In-law suite? The kitchenette and bathroom are our own plumbing. Detached garages add a trench for power and water.
Most 'we never use that room' stories are about temperature. An attic with 6 inches of old fiberglass hits 95°F in July; a garage room over a bare slab is 55°F in January. We insulate to today's code — foam or dense batts in the roof, rigid foam under a new floor, air-sealed — and size the mini-split for the room, not the catalog.
We check zoning with the town, measure headroom and joists, look at the panel and the plumbing stack. Itemized price on the spot, with the permits and any engineering listed.
Drawings, engineering for dormers or floor work, permit filed. Usually 2–5 weeks depending on the town.
Structure first — dormers, stairs, floor — then rough plumbing and electrical, inspections, insulation, drywall, HVAC, finishes. Attics run 5–9 weeks; garages, 4–7.
Certificate of approval from the town, an item-by-item walkthrough with you, then the last payment.
Attics and garages turned into real rooms across all 21 New Jersey counties from Paramus.
typical fixed-price range — your exact number goes in writing after a free visit
How we beat the big chains: Addition franchises price an attic like a second story and rent the HVAC and plumbing crews that decide whether the room is livable. No franchise fees, no commissioned salesmen, no rented subcontractors — that's typically 15–30% under national-brand quotes for the same or better spec. Bring us any written quote and we'll match the scope line by line.
“We finished the attic — then found out it can't be listed as a bedroom because there's no egress and the stairs are illegal.”
“The garage room is freezing all winter. They put carpet on the slab and called it done.”
“The contractor never checked zoning. The town made us put the garage door back.”
You found a crew that is actually near you. First Call Contracting is based in Paramus, in Bergen County, and our own licensed techs handle attic & garage conversions in all 21 New Jersey counties — no call center, no subcontractor sent from two states away. Most of Bergen, Passaic, Hudson and Essex is 15 to 30 minutes from our shop, and emergencies go to the nearest crew, 24/7.
Closest to us: Bergen CountyPassaic CountyHudson CountyEssex CountyMorris CountyUnion CountyAll 21 counties & 219+ towns →
Call (201) 676-3099, text us a photo, or book a free in-home estimate — you get a written price before any work starts.
A straightforward attic bedroom or office with stairs, insulation, a mini-split and egress runs about $45,000 to $85,000. Add a dormer for headroom or a bathroom and it's $85,000 to $130,000+. Itemized and fixed before we start.
A one- or two-car garage into a family room or office typically costs $35,000 to $70,000; an in-law suite with a bathroom and kitchenette, $70,000 to $120,000. Detached garages add the cost of running power and water.
Yes and yes — if it's done with a permit. Zoning approval, then building, electrical, plumbing and HVAC permits, then a certificate from the town. That's what makes it legal square footage when you sell or refinance.
Code wants 7 feet of ceiling height over at least half the usable floor. With 5–6 feet at the ridge, a dormer can fix it; under 5 feet, an attic conversion usually isn't worth it, and we'll say so.
A ductless mini-split almost every time — one outdoor unit, one quiet indoor head, heat and AC, no ducts. If your furnace and AC have the capacity, we can extend ducts instead — but we test that, not assume it.
Permits take 2–5 weeks, then attics run about 5–9 weeks on site and garages 4–7; a bathroom or dormer stretches it. You get the schedule in writing and a photo text every workday.
If you're anywhere in New Jersey, yes. First Call Contracting is based in Paramus and handles attic & garage conversions across all 21 counties with our own licensed crew. Most of Bergen, Passaic, Hudson and Essex is 15 to 30 minutes from our shop, and emergencies are dispatched to the nearest crew 24/7. Call (201) 676-3099 or book a free in-home estimate.
Zoning checked first · permitted and inspected · insulation, HVAC, plumbing and electrical by one crew
Or call Alex direct: (201) 676-3099
A real person picks up every hour of every day. We tell you what to shut off first, then send the nearest crew.