Interior Door Types, Materials & Costs: A Buyer’s Guide
A standard hollow-core interior door typically runs $50 to $150 unfinished, while solid-core and solid-wood doors can run $150 to $600 or more before installation. Installation itself usually adds $100 to $300 per door if you’re hiring it out. That’s the range — the rest of this comes down to which type actually fits your situation.
I’ve replaced doors throughout two different houses, and the biggest lesson both times was that the door itself is rarely the expensive part. Hardware, framing adjustments, and paint or stain are where budgets quietly creep.
Hollow-Core vs. Solid-Core vs. Solid Wood
Hollow-core doors are lightweight, budget-friendly, and fine for closets or low-traffic rooms, but they dent easily and don’t block sound well. Solid-core doors cost more but feel and sound closer to real wood, making them a solid middle ground for bedrooms and home offices. Solid wood doors are the most expensive and heaviest option, typically reserved for statement entries or older homes being restored to match original trim.
Common Interior Door Styles
Panel doors remain the standard for a reason — they suit almost any home style. Flush doors have a smooth, minimal face that fits modern interiors. French doors bring in light between rooms but sacrifice privacy and wall space for the swing. Barn-style sliding doors save floor space and have become popular for tight hallways, though they don’t block sound as well as a hinged door.
What Actually Drives the Price Up
Custom sizing for older homes with non-standard rough openings can add significantly to cost, since off-the-shelf doors are built to modern standard dimensions. Pre-hung doors, which come already mounted in a frame, cost more upfront but save labor time during installation. Glass inserts, raised panel detailing, and solid wood species like oak or mahogany all add cost on top of the base door.
DIY Installation vs. Hiring a Pro
Swapping a door slab on existing, undamaged hinges is a reasonable weekend project for most homeowners. Installing a full pre-hung door with new framing is a different job entirely — if the opening isn’t square, you can end up with a door that won’t close properly no matter how carefully you hang it. If your walls are older or you’re unsure about the framing, it’s worth paying for at least one hour of a contractor’s time to check the opening before you buy.
Where I’d Spend More and Where I Wouldn’t
I’d splurge on solid-core doors for bedrooms, since the sound difference is noticeable every single night. I wouldn’t spend extra on decorative glass inserts for closet doors — nobody notices, and they cost meaningfully more to replace if damaged.
Frequently Asked Questions
What’s the difference between hollow-core and solid-core interior doors?
Hollow-core doors have a cardboard or lightweight honeycomb interior and cost less but offer little sound insulation, while solid-core doors are filled with denser material, weigh more, and block sound significantly better.
How much does it cost to replace an interior door?
Expect roughly $150 to $450 total per door including the slab and basic installation, with solid wood or custom-sized doors pushing that higher.
Can I install an interior door myself?
Replacing just the door slab on working hinges is manageable for most DIYers, but installing a full pre-hung unit with new framing is more advanced and worth hiring out if you’re not confident measuring and shimming an opening square.
Do interior doors need to match throughout the house?
It’s not required, but matching door style and finish throughout main living areas generally looks more cohesive; it’s common to use a slightly simpler style for closets and utility spaces.
