model

Interior Door Cost (2026): Hollow Core to Solid Wood, 8 Ft and Wide Doors, Pocket, Barn and Bifold, With Labor Hours

One opening priced every way: five door materials, tall and wide sizes, pocket, barn, bifold and bypass, replacements and widened openings, with the code that applies and a house of eight doors.

By Clamp ResearchReviewed by Emmanuel ForgePublished Nov 1, 2026✓ Reviewed Oct 2026

Direct answer: In Clamp's catalog, one 30x80 prehung interior door with casing on both sides and a lever set is $471 direct in hollow core, $600 in solid core and $774 in solid wood. An 8 ft solid-core door is $762. In solid core, a pocket door is $1,121, a barn door $606, a bifold $678 and a bypass closet set $665, all before markup.

The assumptions

This model assumes

One 30x80 opening with casing on both sides and a lever set, unless a row says otherwise
New door in a framed opening; replacements priced on their own
Direct cost from Clamp's October 2026 catalog, before markup
Retail prices observed October 31, 2026

The model, step by step

1One opening, sized

Price an interior door by the opening: the door, its jamb, casing on both sides and the hardware. The common door is 30 in by 80 in (2-6 by 6-8), and the framed opening is a little bigger than the unit.

Door: 30 x 80 in

Opening: 32 x 82 1/2

Casing: 17 ft a side

= 34 ft, both sides

1 door, 34 ft of casing

Illustration of three doors side by side, 30 by 80, 30 by 96 and 36 by 80 in, each inside a dashed amber rough opening; the list reads 30 by 80 solid core base, 30 by 96 plus 46 percent at retail, 36 by 80 plus 8 percent at retail, four hinges on doors over 7 ft (Masonite)

Three sizes

Three door sizes, drawn in the style of Quick Clamp's sketch pad: rough openings dashed in amber. The 30 x 80 opening is Mastercraft's; the 30 x 96 and 36 x 80 openings are Clamp's estimate using the same 2 in and 2 1/2 in. Check the unit's spec sheet. Illustration with typed labels.

Rough openings follow the unit you buy: Mastercraft's 30 x 80 prehung needs 32 x 82 1/2 in. Frame to the spec sheet, not a rule of thumb.

2Five doors in one opening

Hollow-core doors have a cardboard honeycomb inside; solid core is particleboard or MDF; solid wood is stile and rail, sometimes over an engineered core. Glass and custom doors cost more and take longer to hang.

30 x 80 prehung, direct cost, Clamp's catalog
Door	Cost	Hours
Hollow core	$471	2.2
Solid core	$600	2.4
Solid wood	$774	2.5
Glass panel	$973	2.6
Custom	$1,645	2.8

Solid core, line by line

Hang and case$236

Door$200

Lever set$85

Casing, 34 ft, and caulk$79

Direct cost before markup, from Clamp's October 2026 catalog; painting adds $162 a door. Retail listing titles don't always state the core correctly; check the spec sheet. Solid core is quieter, but sound depends on seals: TruStile rates one door STC 33 or 21 (a sound rating) by its seal package.

3Tall and wide doors

An 8 ft door costs about half again as much and takes longer to hang; a 36 in door costs a little more. Price the size in the door line, and price a bigger opening as framing.

One prehung door, direct cost; solid is solid core
Size	Hollow	Solid
30 x 80	$471	$600
30 x 84	$514	$668
30 x 96	$577	$762
36 x 80	$478	$616
42 x 96	$641	$878

At retail, JELD-WEN's Birkdale solid-core prehung is $417.56 at 30 x 80, $608 at 30 x 96 (+46 percent) and $452.81 at 36 x 80 (+8 percent). Clamp's 84 in and 42 in factors are estimates; no matched retail pair was found. Masonite's molded-door spec calls for four hinges on doors over 7 ft.

4Pocket, barn, bifold and bypass

Each type needs different room around the opening. A pocket door needs an empty wall as long as the door beside the opening; a barn door needs wall beside it and blocking for the track; a bifold folds in the opening; a bypass only ever opens half of it.

One opening, direct cost; solid is solid core
Type	Hollow	Solid
Swing, prehung	$471	$600
Pocket8 ft solid core: $1,461	$980	$1,121
BarnSolid wood: $780	$478	$606
Bifold, 30 in	$406	$678
Bypass, 60 in	$506	$665

Illustration of five door types in plan: a swing door with its arc, a pocket door sliding into an amber wall cavity, a barn door on an amber track beside the opening, a bifold folded in the opening, and two bypass doors overlapping in a 60 in opening; the list reads Swing 30 in arc into the room, Pocket wall about 61 in long, Barn wall beside track above, Bifold folds inside the opening, Bypass half open at a time

Five types

Five door types in plan, drawn in the style of Quick Clamp's sketch pad: the space each needs in amber. Illustration with typed labels.

Pocket: Johnson's 1500HD frame needs a rough opening about twice the door width plus 1 in, and Johnson's 2000 Series frame leaves out the door, jambs, drywall, locks and pulls. Barn: the door is wider than the opening (Rustica overlaps 2 in a side), the track needs blocking in the wall, and Masonite's guide says two people. Clamp's pocket price is an open wall; opening a finished wall is framing, drywall and paint on top.

5Replacing a door

A slab in a sound jamb is the smallest job. A prehung swap pulls the old jamb. Widening the opening is framing: a new header, drywall and paint.

One door, solid core unless noted, direct
Job	Cost	Hours
Slab, hollow, existing jamb	$367	2.4
Slab, existing jamb	$563	2.6
Prehung swapReuses the old casing	$743	4.4
New jamb and casing	$924	5.2
Widen the openingNew header, drywall patch, paint blend	$1,613	14.8

A slab isn't automatically faster: mortising hinges and boring for the lock take time. One ContractorTalk poster logged 26 man-hours for 15 slabs with handlesets, about 1.7 hours each.

6Code and accessibility

Most interior doors have no code minimum width. A few rules do touch them.

What applies

Egress doorThe IRC sizes the required egress door; other doors aren't required to meet it

GlassGlass in a swinging, sliding or bifold door needs safety glazing, with narrow exceptions (IRC R308.4.1 in 2021; R324.4.1 in 2024)

Accessible routesWhere a project must be accessible, the ADA wants 32 in clear with the door open 90 degrees; a 32 in door doesn't give it; a 36 in door is the usual choice, but check the unit's clear width

Fire-ratedA rating is listed for the door, frame and hardware together; a solid core isn't a fire door by itself

The 2024 IRC moved the egress door to R318.2 and safety glazing to R324.4.1; check the edition your jurisdiction adopted.

7What stores and installers publish

Retail prices are the door alone; install-service prices are labor alone. Neither is a contractor's cost.

Published prices
Source	Price
Birkdale 30 x 80 prehung, hollowHome Depot, regular; solid core $417.56	$358
Knotty alder 30 x 80 prehung	$869
Full-lite glass 30 x 80 prehung	$705
Monroe slab / prehung	$97 / $184
Johnson pocket frame kit	$125
Barn track kitJohnson 60 in and WINSOON 79 in kits	$129 to $176
Hollow bifold with hardwareBuilders Choice solid shaker bifold $618	$137
Home Depot install, basic doorLabor only; barn $288, French $324	$178 to $398

Hours: production carpenters report about 20 minutes a door to hang (JLC, 2016). Clamp allows 2.25 hours to hang and case a door, about 4.2 for a pocket door in an open wall, and more for tall doors.

Production numbers come from new houses with many doors in a row; a single replacement carries setup, tear-out and travel. Clamp's door sold at a 1.50 markup is about $900 in solid core.

8A house of eight doors

Eight 30x80 prehung doors with casing and levers, priced as one line.

Eight doors, direct cost
Doors	Cost	Hours
Hollow core	$3,771	18
Solid core	$4,801	19
Solid core, 8 ft	$6,095	24

Sold at a 1.50 markup, eight solid-core doors are about $7,202. Moving from hollow to solid core adds $1,030 for the house; going to 8 ft adds $1,294 more.

What it means

What to doPrice interior doors by the opening: the door's material and size, the type, and casing and hardware. Put tear-out, widening and pocket-door wall work on their own lines, and frame to the unit's rough opening.

The opening is the same 30x80 in every row unless the size says otherwise. New doors run $406 to $1,645; a hollow slab in an existing jamb is $367.

Every door on its own line

Clamp's estimate prices interior doors by material, height and width, as swing, pocket, barn, bifold or bypass doors, with tear-out, widening and paint as separate lines.

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Put your own door prices and hang times in your catalog. The next door quote takes ten minutes.

Questions

How much does it cost to install an interior door?

About $471 direct for a 30x80 prehung hollow-core door with casing and a lever set, and $600 for solid core, in Clamp's catalog, before markup.

Is a solid core door worth it over hollow core?

It costs about $129 more a door in Clamp's catalog and about $60 more at retail. It's heavier and quieter, but how much quieter depends on the seals around it.

How much more do 8 foot interior doors cost?

About 46 percent more at retail for the same JELD-WEN door, and $762 against $600 installed in Clamp's catalog for solid core, with more casing and hanging time.

How much does it cost to install a pocket door?

About $1,121 direct for a solid-core pocket door in an open wall in Clamp's catalog. Retrofitting a finished wall adds framing, drywall and paint; Block Renovation puts a retrofit in a non-load-bearing wall at $1,200 to $3,500, and $2,500 to $4,500 or more in a load-bearing wall.

How much does it cost to install a barn door?

About $606 direct for a solid-core barn door in Clamp's catalog, including a $170 track kit allowance. Kits retail for about $129 to $176, and the track needs blocking in the wall.

Sources & provenance

Clamp estimating catalog (2026-10): interior doors by material, height and width; pocket, barn, bifold and bypass; replacement and widening Clamp Research
JELD-WEN 30 x 80 Birkdale Primed Hollow Core Prehung (THDJW235300140) Home Depot (research)
JELD-WEN 30 x 80 Birkdale Primed Solid Core Prehung (THDJW235300331) Home Depot (research)
JELD-WEN 30 x 96 Birkdale Solid Core Prehung (THDJW235300428) Home Depot (research)
JELD-WEN 36 x 80 Birkdale Solid Core Prehung (THDJW235300379) Home Depot (research)
Pacific Entries 30 x 80 Knotty Alder 2-Panel Prehung (GA2242-30) Home Depot (research)
MMI Door 30 x 80 Full Lite Clear Glass Prehung (Z009296L) Home Depot (research)
JELD-WEN 30 x 80 Monroe Primed Slab (JW226100879) Home Depot (research)
Johnson Hardware 1500 Series Universal Pocket Door Frame, 2x4 wall (153068PF) Home Depot (research)
1500HD Installation Instructions (IN1500HD) Johnson Hardware (official source)
2000 Series Pocket Door Frame Johnson Hardware (official source)
Johnson Hardware 2610F 60 in Track and Hardware Set (2610F60H) Home Depot (research)
WINSOON 79 in Frosted Black Barn Door Track Kit (GCM1912) Home Depot (research)
Builders Choice 30 x 80 1-Panel Shaker Solid Core Bifold (HDX222430) Home Depot (research)
2025 California Residential Code, R318 Means of Egress California Residential Code 2025 (2024 IRC based), via GoCodeBook (official source)
2025 California Residential Code, R324 Glazing California Residential Code 2025 (2024 IRC based), via GoCodeBook (official source)
B30 Safety Glazing Boulder County (2021 IRC) (official source)
Barn Door Installation Guide (MIC-171901) Masonite (official source)
Masonite 30 x 80 Riverside 5-Panel Hollow Core Bifold with Hardware (95680) Home Depot (research)
TENONER 60 x 80 5-Panel MDF Bypass Set (BYP-5gxb30k) Home Depot (research)
Molded Door Technical Specifications Masonite (hosted by Baird Brothers) (official source)
JELD-WEN Solid Core 6-Panel Slab (ProCore) Lowe's (JELD-WEN listing) (research)
STC Ratings TruStile (official source)
Mastercraft Pine Stile and Rail 6-Panel Prehung Menards (research)
2022 California Residential Code, Chapter 3 (R311.2) ICC (California Residential Code, IRC-based) (official source)
2010 ADA Standards, Chapter 4 (404.2.3) US Access Board (official source)
Cost to Install Doors Home Depot (research)
Hanging Pre-Hung Interior Doors JLC (John Spier) (research)
Installing a Door Slab (forum) ContractorTalk (research)
FAQ Rustica Hardware (official source)
A Homeowner's Guide to Pocket Door Installation Block Renovation (research)

Changes: Nov 1, 2026: Published.