Interior Door Installation NJ | Doors & Trim

What does interior door installation cost in New Jersey?

Installed interior doors in Ocean and Monmouth County typically run $350–$1,200 each, depending on whether it’s a hollow-core builder door, a solid-core upgrade, a barn-door setup, or a custom size that needs the opening reframed. New casing and hardware add to it, and doing several at once lowers the per-door cost. Your estimate is itemized per opening.

The detail that makes a house feel finished

Doors are the trim-carpentry detail people feel before they notice — a door that binds, a gap at the top, casing with a bad miter. Hung right, doors close with a soft click, swing true, and make a whole hallway look intentional. It’s precise work: plumb the jamb, shim it true, set consistent reveals, and miter the casing tight. That’s the standard we hold.

What a Paragon interior door job includes

Assessment of each opening — new slab on an existing jamb where it’s square, pre-hung where it isn’t
Hollow-core, solid-core, barn, bypass, bifold, or pocket doors to fit the room and budget
Solid blocking behind barn-door and pocket-door hardware — never anchored to drywall alone
Plumb, shimmed, and reveal-set so every door swings and latches true
New casing and trim mitered clean, caulked, and ready for paint
Hardware — hinges, knobs or levers, and stops installed and aligned
Old-door haul-away and cleanup

Part of the interior refresh

Doors pair naturally with new flooring or a full renovation — matching trim and hardware across a floor pulls the whole level together. Financing makes a whole-house door and trim upgrade a single, easy project.

Why homeowners choose Paragon

Family-run and licensed (NJ HIC #13VH13814500). We treat interior doors as the finish carpentry they are — plumb, quiet, and clean-trimmed — because the details are what separate a house that was worked on from a house that was finished.

A process built on showing up

Free inspection & estimate

We walk the roof, photograph everything, and give you a clear, itemized quote — usually within 24 hours. No pressure, no games.

Materials & scheduling

Pick your shingle style and color with our guidance on what holds up best in shore weather. We lock a date and show up on it.

Tear-off & installation

Most roofs are done in a single day: full tear-off, deck inspection, ice & water shield, synthetic underlayment, and architectural shingles installed to manufacturer spec.

Cleanup & final walkthrough

Magnetic nail sweep, debris hauled away same day, and a walkthrough with you before we collect final payment. Warranty registered for you.

Our neighbors say it best

“From the initial meeting with Joe and Frank, all the way through the completion of our new roof and chimney cap, the process was seamless. Their team is professional, showed up when they said, delivered on all deadlines and the clean up was impeccable. The workmanship and warranty far exceeded anything we were offered by the other roofing companies.”

Rob & Linda

Roof replacement

“We are extremely satisfied with the work done by Paragon Exteriors. Their team was professional, efficient, and the results exceeded our expectations.”

Dan Marone

Exterior renovation

“Professionalism, reliability, and excellence define the people at Paragon Exteriors. They transformed our roof with skill and precision.”

Lisa O'Neill

Roof replacement

Interior Door Installation questions, answered

How much does it cost to install an interior door in New Jersey?

Installed interior doors in Ocean and Monmouth County typically run $350–$1,200 each, depending on whether it’s a hollow-core builder door, a solid-core door for sound and quality, a barn-door setup, or a custom size that needs the opening reframed. New casing and hardware add to it. Doing several doors at once lowers the per-door cost. Your estimate breaks it out per opening.

What’s the difference between hollow-core and solid-core doors?

Hollow-core doors are light and budget-friendly but transmit sound and feel flimsy. Solid-core doors are heavier, quieter, and feel substantial — worth it for bedrooms, bathrooms, and offices where sound matters. We’ll walk you through where a solid-core upgrade is worth the difference and where a hollow-core is fine.

Can you replace just the door slab, or do I need a whole new frame?

If your existing frame is square and solid, we can often hang a new slab on the existing jamb and save you money. If the frame is out of plumb, damaged, or you’re changing the door size or swing, a pre-hung unit — slab and frame together — gives a cleaner, longer-lasting result. We assess each opening and recommend the honest option.

Do you install barn doors and closet doors too?

Yes — sliding barn doors, bypass and bifold closet doors, and pocket doors are all common jobs. Barn doors need solid blocking behind the wall to carry the track weight, which we install properly rather than anchoring to drywall. We handle the hardware, alignment, and trim so it slides smooth and looks intentional.

How long does interior door installation take?

A single pre-hung door swap is often an hour or two; a whole house of doors is usually a one- to two-day job including hardware and trim. Custom openings that need reframing take longer. We give you a realistic per-opening schedule up front.

Free interior door installation estimate

Tell us about your project — we respond fast, usually the same day.

Interior Doors