Massachusetts License
CS-123114
MA CSL · Unrestricted
Interior door installation is the removal of an existing door and the fitting of a new one into the rough opening: setting and shimming a new jamb, hanging the door slab, installing hardware, and trimming out the casing so the finished opening is plumb, square, and latched cleanly.
It is the right call when a door binds, drags, fails to latch, or when you are updating closet doors, adding a pocket door, or replacing hollow-core slabs throughout a remodel. On Cape Cod, humid summers mean a door installed without letting it acclimate to the house will move after the first season. Getting the shim work and hardware right the first time avoids that.
Daniel Araujo holds a Massachusetts Construction Supervisor License (CSL), Unrestricted (#CS-123114), and Forty One Construction is a BBB Accredited Business. We carry 51 Google reviews at 5 stars.
This page covers what an interior door installation includes, what it costs in 2026, how door types compare, and what goes into a properly hung door on Cape Cod.
Massachusetts License
CS-123114
MA CSL · Unrestricted
Home Improvement
217279
MA HIC Registration
Accreditation
BBB
Accredited Business
Google Reviews
5 Stars
51 Google Reviews
Project Planning
Free
On-Site Estimates
Before You Start · Cape Cod
If a door binds badly, has a rotted or out-of-square jamb, or simply no longer matches a remodeled interior, replacement makes more sense than repeated adjustment. Cosmetic wear is worth repairing. A failed frame is not.
The one detail that gets skipped most often is shimming. A door nailed through the casing without shims at the hinge and strike points will drift out of alignment. You cannot see it from the surface, but you feel it within a season when the latch stops catching on the first try.
Interior Doors · Cape Cod
An interior door installation with Forty One Construction runs through seven steps, from measuring the rough opening to the final swing test in Hyannis. Each step has a clear purpose, and the door is not called done until it operates cleanly and the trim is set. Here is what each one covers.
Planning · Phase One
We measure the rough opening, confirm the door swing and handing, and check whether the existing jamb can be reused or needs to be replaced. You get a written scope before any door is ordered so there are no surprises when we arrive.
We help you choose the right door type, hollow-core, solid-core, or solid wood, and the right pre-hung unit or slab for your opening. For larger projects with multiple doors, we coordinate delivery so all units arrive together and acclimate to the home before installation day.
Installation · Phase Two
We pull the old door, hardware, and casing, and check the rough opening for square and any rot or damage at the jamb or sill. If the opening needs adjustment before the new unit goes in, we address it at this stage rather than shimming around a bad frame.
The new pre-hung unit is dry-fit in the opening, then shimmed at the hinge and strike locations until the jamb reads plumb and the door swings without binding. Shims are fastened through the jamb into the framing, not just tacked through the casing, so the door stays in place through humidity swings.
Hinges, knobset or lever, and strike plate go on next. We set the backset, align the strike so the latch catches on the first push, and test the swing through its full range before moving to trim. Ball-bearing hinges go on solid-core and taller slabs.
Finish · Phase Three
The casing goes back on with tight miters, nail holes filled and sanded, and the profile matched to the existing trim in the room. If the old casing is damaged or you are upgrading the profile, that is noted in the scope before we start.
We test the door through its full swing, confirm the reveal is consistent around the perimeter, and make any final adjustments. You see the work, operate the door yourself, and we do not call it done until you are satisfied it functions correctly.
Scope · What You Are Buying
An interior door installation quote from Forty One Construction covers removal and disposal of the old door, setting and shimming the new jamb, hardware installation, basic casing reattachment, and functional adjustment. Painting or staining the door and trim, structural framing changes to resize an opening, and flooring or threshold replacement are quoted separately rather than assumed into the number.
Included in the quote
Not included, quoted separately
Done correctly means the jamb shimmed and screwed at hinge and strike points, not just nailed through the casing, a consistent reveal of 1/8 to 3/16 inch around the door on both sides, the door plumb within 1/8 inch over its height, a latch that catches on the first push, three or more hinges on solid-core and taller slabs, and casing miters tight with no gaps. Accessible routes require a minimum 32-inch clear width under IRC and IBC guidelines, and we build to that where it applies.
Door Cost · Cape Cod
Interior door installation on Cape Cod typically runs $300 to $900 per door installed in 2026, with Forty One Construction quoting each project in Hyannis after reviewing the scope. French and double doors, pocket door conversions, and openings requiring reframing land at the higher end.
The per-door price varies with door type, hardware, and how many doors are done in one visit.
Cost Factors
The price moves with a handful of real drivers, including door type, hardware selection, opening condition, and how many doors are installed in one visit.
Hollow-core costs least; solid-core and solid wood cost more in material and weight.
A slab swap into a sound existing frame takes less time than setting a full pre-hung unit with a new jamb.
An out-of-square or rotted rough opening needs extra carpentry before the door goes in, which adds labor.
Ball-bearing hinges, higher-end levers, and upgraded knobsets add material cost above basic hardware.
Installing several doors in one trip reduces per-door cost compared to single-door calls.
2026 Cost Guide
These ranges are a starting point for planning. Every project is quoted after reviewing the specific doors and openings.
| Job size / scope | Typical range on Cape Cod (2026) |
|---|---|
| Single slab swap into existing frame | Lower end of $300-$900 range |
| Standard pre-hung door install with casing and hardware | Mid-range; most single-door installs fall here |
| French or double door, or pocket door conversion | Upper end; header and track work adds time |
Multi-door projects covering a full home are quoted as a package after an on-site walkthrough.
Get a Free Estimate →Door Types · Cape Cod
The right door type depends on the opening, the frame condition, and how the room is used. On Cape Cod, humid summers mean a door that has not acclimated to the house will swell or shrink after the first season, so acclimation time is built into the schedule. Below are the main types we install, compared honestly.
Standard Install · Most Common
The most common interior door project. A factory-assembled unit with the door, jamb, and hinges already set arrives ready to drop into the rough opening. Best when the existing frame is damaged, out of square, or being replaced as part of a remodel. Takes more time than a slab swap but produces a cleaner result in a bad opening.
Swap Out · Existing Frame
The door slab only, with the existing jamb reused. Best when the frame is sound, plumb, and square and you are simply upgrading the slab or replacing a damaged one. Faster and lower cost than a full pre-hung install. Hinge mortises on the new slab must align with the existing jamb locations.
Space Saving · Pocket Doors
The door slides into the wall cavity rather than swinging into the room. Best for tight spaces, bathrooms, and laundry rooms where swing clearance is limited. Requires track and header work inside the wall, which adds labor compared to a standard swing door. Typically a half-day to full-day project per opening.
Double Doors · French Doors
Two-door units that meet in the center, with or without glass panels. Best for wider openings between living spaces, home offices, or leading to a covered porch. Header condition matters more here because the opening is wider. Getting both slabs to hang plumb and meet cleanly at the center takes more time than a single door.
Closets · Bifold Doors
Folding panels on a top track, standard in closets and laundry rooms. Best when you need full access to a wide opening without swing clearance. Track alignment and door weight matter for smooth operation. Solid-core bifolds need a sturdier track than hollow-core units of the same width.
Door Type Comparison
Compare where each door type fits best, how it works in a typical Cape Cod home, and the relative labor involved.
| Option | Best for | Works in Cape Cod homes | Labor level |
|---|---|---|---|
| Pre-hung install | Remodels, bad frames | Yes, most common choice | Medium |
| Slab only | Sound frames | Yes, fastest swap | Low |
| Pocket door | Tight spaces | Yes, with wall access | High |
| French / double | Wider openings | Yes, header check needed | Medium-high |
| Bifold | Closets, laundry rooms | Yes, standard fit | Low-medium |
We work with door units from makers such as Masonite, JELD-WEN, Reeb Millwork, and TruStile for higher-end paint or stain-grade work. Jambs in primed finger-jointed pine or poplar are standard. If a hollow-core slab is the right call for a low-traffic closet, we will tell you rather than upsell.
Project Timeline · Cape Cod
A single standard pre-hung door takes one to two hours. A slab-only swap runs under an hour. A multi-door project covering five or more doors in one visit typically fills a full day. French, double, or pocket door conversions run a half day to a full day per opening because of the header and track work involved. Finish carpentry and casing add time on top of hanging.
Two things affect scheduling here. First, doors need to acclimate to the home before installation. A door delivered and hung the same day in August, when Cape Cod humidity is at its peak, may move after the first cool spell. We build acclimation time into the schedule on multi-door projects. Second, summer demand between Memorial Day and Labor Day compresses the booking calendar, so the earlier you reach out, the more schedule flexibility there is.
Installation Quality · Cape Cod
The visible part of a door installation is the casing. The part that decides whether it still works in three years is the shimming, the hardware placement, and whether the door was given time to acclimate before it was hung. On Cape Cod, humid summers and the shift to dry fall air mean a door that was tight in August can gap in October if the work was rushed.
A jamb that is not plumb produces a door that swings open or closed on its own, because gravity pulls the slab toward the low side. We shim at every hinge location and at the strike, fasten through the jamb into the framing, and check plumb at the hinge side before the first hinge screw goes in. The reveal, the gap between the door edge and the jamb face, should be consistent at 1/8 to 3/16 inch all the way around. If it widens at a corner, the jamb is not square and shimming is the fix, not forcing the door.
A strike plate set in the wrong position is the most common reason a new door will not latch on the first push. We set the backset, test the latch throw against the strike, and adjust the strike location before the casing goes on, when it is still easy to move. Solid-core and taller slabs get three or more hinges. Ball-bearing hinges go on heavy slabs so the door does not sag over time. Hardware that corrodes fails faster in coastal air, so we specify finishes that hold up in humid conditions.
Service Life · Coastal Conditions
The door slab itself is indoors and not subject to the same salt air and UV exposure as exterior work. What degrades first on Cape Cod is typically the hardware finish and any trim that is near an exterior threshold or a bathroom with poor ventilation. We do not publish a single lifespan figure, because the honest answer depends on the door type, the room conditions, and how the hardware was specified. What we can say is that the installation work is backed by a written warranty.
Forty One Construction backs labor and installation with a 5-year workmanship warranty. Manufacturer warranties on door and hardware products are provided separately by the manufacturer and vary by product.
Local Door Installer · Cape Cod
Forty One Construction installs interior doors across Cape Cod from our office in Hyannis. The humid summers here mean acclimation time before hanging matters more than it does inland, and coastal air affects hardware finish choices even inside the house. A door installation done for a seasonal home on the outer Cape is scheduled and specified with those conditions in mind.
We serve homeowners from the outer Cape through the canal, Provincetown, Truro, Wellfleet, Eastham, Orleans, Chatham, Brewster, Harwich, Dennis, and Yarmouth on one side, and Hyannis, Centerville, Osterville, Cotuit, Mashpee, Falmouth, Bourne, Sagamore, Sandwich, and Barnstable through the mid- and upper Cape, along with Plymouth. See our work in Hyannis and Barnstable.
Credentials · Accountability
Daniel Araujo holds a Massachusetts Construction Supervisor License (CSL), Unrestricted (#CS-123114), and the company holds Home Improvement Contractor registration #217279. We carry $1,000,000/$2,000,000 general liability coverage, and a certificate of insurance is available on request. The numbers are printed so you can check them. Learn more about us.
We submit drawings to the Town of Barnstable Building Division and pull the permit in our name. Footings reach frost depth, ledgers get through-bolted and flashed, and every connection is built to pass framing and final inspection, not just to look finished.
You get a written scope up front, so the number in your hand is tied to specific materials and work, not a vague figure that grows halfway through. When quotes look interchangeable on paper, that's usually where the real difference sits.
Interior Carpentry · Cape Cod
Interior door installation often connects to other finish carpentry work in the same visit. If you are updating trim profiles throughout a room or adding new casing to match a remodel, our carpentry crew handles that alongside the door work. For exterior openings or work that ties into the building envelope, we can scope that as part of a broader project.
Client Testimonials
Hear directly from our clients about their experience working with Forty One Construction. Select a video to watch their story.
Homeowner Reviews
Forty One Construction holds a 5-star rating across 51 Google reviews.
“From the first walkthrough to the final cleanup, their professionalism stood out. They explained every step clearly, offered smart recommendations…”
“We are enjoying our deck and patio and we love the fresh look our house now has.…”
“Outstanding communication, craftsmanship, customer care and pricing. I would recommend them for any home improvement project, large or small.…”
Custom Decks · Cape Cod
Massachusetts consumer guidance advises homeowners not to pay more than one-third of the estimated cost upfront unless special-order materials are needed. We work within that standard and tie payments to a written scope. Talk specifics with us before you sign anything.
It matters mainly for fit and acclimation. When we supply the door, we confirm the rough opening size and handing before ordering, and we schedule delivery so the unit can sit in the home before we hang it. If you supply your own door, we will measure the opening first and confirm the unit will work before installation day, so there are no surprises when we arrive.
Interior door work is contained to the opening being replaced. Dust from cutting casing or trimming a jamb is localized, and we protect the floor at the work area. The crew parks on site or on the street. On a multi-door day, we typically stage in one area and move through the house room by room rather than leaving openings exposed overnight.
Clear the area around each door opening, move furniture back from the doorway and take anything off the walls nearby that could vibrate loose. If a closet door is being replaced, empty the closet of hanging items near the opening. We handle the rest, including removal of the old door, shimming, hardware, and cleanup of the old materials.
Every installation carries a 5-year workmanship warranty on labor and installation. Manufacturer warranties on door and hardware products are provided separately by the manufacturer. If a door binds or a latch fails to catch due to our work, call us and we will come out, look at it, and fix it at no charge if the problem is ours.
The gap usually sits in what you cannot see: whether the jamb is shimmed and screwed at hinge and strike points or just nailed through the casing, whether the reveal is set consistently or the door is forced to close, and whether the hardware is aligned so the latch catches without lifting the handle. We are a licensed local company that stands behind the work with a written warranty and pulls permits where required.
A straight swap of an interior door slab or a pre-hung unit into an existing opening typically does not require a permit. Structural changes to a rough opening, such as widening it to meet accessible route requirements, fall under 780 CMR and do require a permit. When permit work is involved, we prepare the application and pull it in our name.
Interior door work is not limited by season the way exterior projects are, but scheduling is still affected by Cape Cod's summer population swing. Between Memorial Day and Labor Day, demand is high and booking lead times stretch. Shoulder seasons in spring and fall typically offer more flexibility. For seasonal homeowners, scheduling before you arrive for the summer means the work is done before the house fills up.
Free On-Site Estimate
Ready to talk through your project? Forty One Construction will
come out, look at your yard, and give you a written scope tied
to real materials and a real number. Every install carries a
5-year workmanship warranty on labor and installation, with
manufacturer warranties on materials provided separately by
the manufacturer.
Our crew builds across Hyannis and Cape Cod, and our office is
at 76 W Main St Unit 306, Hyannis, MA 02601. Call us or request
an estimate and we'll get you on the calendar honestly, weather
and permits accounted for.
No-pressure consultation · Clear upfront pricing