Door installation cost typically ranges from $150 to $500 for a standard interior door, and $500 to $2,500 for an exterior door, depending on material, whether the existing frame is reused, and how much carpentry work is needed around the opening.
Doors are one of those home features that seem simple until you actually price out replacing one. Material, framing condition, and hardware all shift the final number more than most homeowners expect. Here’s a realistic breakdown by door type.
Cost by Door Type
- Interior hollow-core door (slab only, existing frame reused): $150 – $300
- Interior solid-core or paneled door: $300 – $600
- Standard exterior steel or fiberglass door: $500 – $1,200
- Solid wood exterior door: $1,000 – $2,500
- Sliding or French patio doors: $1,500 – $4,000
What Affects the Cost
- Frame condition: Reusing an existing, undamaged frame keeps costs on the lower end. A damaged or out-of-square frame requires a full frame replacement, which adds significantly to labor.
- Material: Fiberglass and steel doors are generally more affordable than solid wood, which costs more both in materials and installation time.
- Hardware: Locksets, hinges, and weatherstripping are sometimes included and sometimes priced separately, always confirm this when comparing quotes.
- Insulation and energy ratings: Energy-efficient exterior doors with better insulation ratings cost more upfront but can reduce energy bills over time. The ENERGY STAR program maintains efficiency standards worth checking when comparing exterior door options.
Replacing the Slab vs. the Whole Frame
If your existing door frame is square, undamaged, and the right size, replacing just the door slab is the more affordable option and usually a quicker job. If the frame has warped, rotted, or shifted over time, which is common with older exterior doors, a full frame replacement is usually necessary for the new door to seal and function properly.
Interior vs. Exterior Considerations
Interior doors are mostly a matter of style and privacy, so cost differences usually come down to material and panel design. Exterior doors carry additional considerations, security, weatherproofing, and insulation, which is why they typically cost several times more than an equivalent interior door.
DIY vs. Hiring a Professional
Replacing a door slab on an existing, properly aligned frame is a manageable DIY project for someone comfortable with basic tools. Frame replacement, especially on exterior doors where proper sealing affects energy efficiency and weatherproofing, is where professional installation makes the biggest difference in long-term performance.
Frequently Asked Questions
Is it cheaper to replace just the door or the whole frame
Replacing just the door slab is almost always cheaper, but only works if the existing frame is in good, square condition without rot or warping.
Do exterior doors need to be professionally installed
It’s not strictly required, but professional installation on exterior doors helps ensure proper sealing against weather and drafts, which affects both comfort and energy costs long-term.
How much does it cost to add a lockset or smart lock during installation
Basic locksets are often included in installation quotes, while smart locks or higher-security hardware typically add $100 to $300 depending on the brand and features.
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