- Hung plumb, even reveals · fixed price
Interior Door Installation & Trim in Northern Virginia, Maryland and DC
FIXO handles interior door installation and interior door replacement across Northern Virginia, Maryland and Washington, DC at one fixed price. Slab doors are fitted to sound existing jambs, prehung doors are set plumb in new or racked openings, casings are replaced with tight miters, and hardware is adjusted so every door closes with one finger. Most homes are done in one to two days.
G4.9 ★★★★★14 Google reviews
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Virginia · Maryland · Washington, D.C.
The number you sign is the number you pay
Express measurement within 48 hours
Slab or prehung: what’s the difference? A slab is the door alone, hung on new hinges in your existing frame. A prehung door arrives already hinged in its own frame (the jamb) and replaces the whole unit. A slab works when the old jamb is plumb and square; a prehung door is the fix when the frame is racked, damaged or the opening is new.
- The three specs that matter
Interior Door Installation: Slab or Prehung, Core and Hardware
The panel style is your choice. These three details decide how the door feels every time you use it.
Slab or Prehung Door Installation
A slab is fitted to your existing jamb when the jamb is square and sound. Prehung door installation is the right call when the old frame is racked or the opening is new.
- We check every jamb at the measurement and tell you which one you need.
Core: Hollow or Solid
Hollow-core doors are light and inexpensive, and they sound like it. Solid-core doors cost more, close with a quiet thud and cut sound between bedrooms and baths.
- Solid core is what we recommend for bedrooms, baths and offices.
Hardware: Hinges, Latches, Levers
Three hinges on solid doors, latches mortised flush, strikes adjusted so the door closes without slamming or rattling. Lever or knob, and passage, privacy or dummy function, named per door.
- Matching the hinge finish to the lever is the detail most people notice.
- How it works
Interior Door Installation in Three Steps
One visit to measure every opening, one fixed number, one to two days to hang the doors.
Tell us how many doors
Call, text or book online with a rough count of doors and whether trim is included. We book a measurement within 48 hours and bring style samples.
- Same day
Express measurement, fixed price
A carpenter measures every opening, checks each jamb for square, confirms door style, core and hardware with you and hands you one written price.
- Within 48 hrs
Hung, trimmed, adjusted
Old doors and casings removed, new doors hung plumb with even reveals, hardware mortised and fitted, casings installed, filled and caulked.
- 1-2 days
- Straight talk
Why Does My Door Swing Open on Its Own?
Because the jamb is not plumb. A door hung in a jamb that leans will drift open or closed, rub at the top corner and never latch cleanly. Fitting a new slab into that jamb copies the problem. Shimming the jamb plumb, or replacing it with a pre-hung unit, fixes it for good.
- Jambs checked for plumb
Interior Door Frame Replacement
When a jamb is split, swollen from a leak or racked out of square, we take out the whole frame and set a prehung unit in its place: shimmed plumb at every hinge, nailed through the shims and cased on both sides. Interior door frame replacement is done on the same visit. When only one side of a jamb is damaged, interior door jamb replacement on that side can save the casing on the other, and only the frames that need it are replaced.
Your price at measurementFixed · all-in
Where we talk you out of it: slab doors in jambs that are out of square. A new slab in a bad jamb never closes right. We shim or replace the jamb first.
- Door by door
Interior Door Replacement: Slab or the Whole Unit?
Most homes need a mix. We decide door by door at the measurement.
| Slab door installation | Prehung door installation | |
|---|---|---|
| Existing jamb | Plumb, square and undamaged | Racked, split, water-damaged, or a new opening |
| Casing | Usually stays in place | Comes off both sides and is replaced |
| Hinges and latch | Mortised to line up with the existing jamb | Already set in the new frame |
| Best for | A style upgrade or hollow to solid core in good frames | Doors that drift, rub or won’t latch |
- Casings and trim
Door Casing Installation and Interior Trim
New doors look unfinished under old casing. Door casing installation is part of every FIXO door quote: casings cut with tight miters, nailed to the jamb and the framing, filled and caulked. We handle door trim replacement on its own too, and the same carpenter can replace window casings, stools and aprons on the same visit, so the interior trim installation matches room to room.
For the trim at the floor and ceiling, see baseboard and crown molding installation.
- Door by door
Hollow Core or Solid Core Interior Doors
Same styles, very different doors. Pick by the room.
- Hollow core
Light, inexpensive, builder standard
Fine for closets and rooms where sound doesn’t matter.
- Lowest cost per door
- Easy to trim and hang
- Lets sound through and feels light
- Solid core
Quiet, substantial, closes with a thud
What we recommend for bedrooms, bathrooms and offices across Northern Virginia, Maryland and DC.
- Blocks noise between rooms
- Feels like a real door in the hand
- Takes hardware without the latch feeling loose
- Same panel styles as hollow core
to measurement
fixed price
days to install
- Sliding doors
Pocket Door Installation and Barn Door Installation
Pocket doors slide into the wall, so the wall has to be opened to set the pocket frame and then patched and finished. We check the wall for wiring, pipes and ducts first, and pocket door installation is quoted on its own line.
Barn doors hang on a track mounted on the face of the wall, so barn door installation is quicker and the wall stays closed. We anchor the track into solid framing so a heavy door rolls true.
- What it costs
Interior Door Installation Cost and Replacement Cost
Short answer: HomeGuide puts interior door installation cost at $226 to $824 per door nationally, and a slab door hung in an existing jamb at $120 to $400. Locally, Angi’s Fairfax, VA data averages $613 per door (most jobs $341 to $804), and its Washington, DC data averages $614 ($334 to $900).
Interior Door Installation Cost by Job
| Interior door job | Typical price | Source |
|---|---|---|
| Interior door installation, per door (national) | $226 – $824 | HomeGuide |
| Slab door installed in an existing jamb | $120 – $400 | HomeGuide |
| Interior door installation, Fairfax, VA | $341 – $804 (average $613) | Angi |
| Interior door installation, Washington, DC | $334 – $900 (average $614) | Angi |
| Hollow core door, material only (DC) | $35 – $440 | Angi |
| Solid core door, material only (DC) | $80 – $545 | Angi |
Ranges from HomeGuide’s interior door cost guide and Angi’s Fairfax and Washington, DC data. Your FIXO number is one written, fixed price for every door on the list, given at the measurement.
- Clients love us
What homeowners in Northern Virginia, Maryland & D.C. say
Every review below is a real Google review, quoted word for word.
G Google · Verified
“Fast, professional, and very transparent pricing. They replaced our old living room carpet with LVP and it looks stunning.”
LVP · living room
G Google · Verified
“If you need a flooring contractor in Fairfax, these are your guys. They installed lvp in our entire basement. No mess left behind, and the price was very fair.”
Fairfax, VA · LVP · basement
G Google · Verified
“Fantastic experience! We wanted to replace the old carpet in our home with LVP. The team was punctual, and the floors look incredible. Highly recommend their installation services.”
LVP · carpet replacement
- Where we work
Interior Door Installers in Northern Virginia, Maryland and DC
FIXO hangs interior doors in Alexandria, Arlington, Fairfax, McLean, Great Falls, Vienna, Oakton, Falls Church, Tysons, Reston, Herndon, Ashburn, Centreville, Clifton and Burke, Virginia, Bethesda and Silver Spring, Maryland, and Washington, DC. The carpenter who measures your openings is the one who hangs the doors. Measuring for new doors yourself? Our interior door sizes guide shows how.
- FAQ
Interior Door Installation: Questions We Get Every Week
Straight answers. If yours isn’t here, call (757) 589-6859 — an installer picks up.
HomeGuide puts it at $226 to $824 per door nationally. Angi’s Fairfax, VA average is $613 per door. FIXO gives you one fixed price after a free measurement.
Interior door replacement cost starts with a slab swap in a sound jamb: HomeGuide puts that at $120 to $400 per door. A new prehung unit with casing costs more.
A slab if the existing jamb is plumb, square and undamaged. A prehung door if the frame is racked, split or the opening is new. We check each jamb at the measurement.
Yes, when they are plumb and square. We only replace the jambs that need it.
For bedrooms, baths and offices, yes. It blocks more sound and feels solid in the hand. Hollow core is fine for closets.
HomeAdvisor puts a professional install at 2 to 5 hours per door, with a prehung door going in an hour or two faster than a slab. Most whole-house jobs take us one to two days.
Yes, sprayed as its own line. Pre-primed doors can also be finished by your painter. Painted-only jobs are on our trim painting page.
Yes. Window casings, stools and aprons are quoted per window on the same visit.
Both are available. Pocket doors need the wall opened and are quoted accordingly; barn doors are surface-mounted and quicker.
Yes. The number you sign is the number you pay.
- Ready when you are
Get Your Fixed Price for Interior Door Installation
Book a free express measurement and a carpenter hands you one written number within 48 hours.
- Prefer to talk first?
Let's talk about your doors.
Leave four details and an installer calls you back within business hours, usually inside the hour. No sales script, no pressure, no showroom visit.
- Call or text(757) 589-6859
- Emailinfo@fixodmv.com · replies within a few hours
- HoursMon–Sat 8am–8pm · Sun closed
- ServingNorthern Virginia, Maryland & Washington, D.C.
The person who measures your home is the person who installs it.
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