Door type
Quantity
Number of doors being replaced in this project.
Material
Glass option
Frame & sill condition
Hardware upgrade
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How this calculator works
Every input maps to a published data anchor. Base installed ranges by door type and material come from 2024-2025 national door installation cost research (Angi, 2024). Quantity multiplies the per-door range into a project total. Glass options, frame & sill condition, and hardware upgrade are shown as separate line items so you can see exactly what's pushing the total up.
Sidelights, transoms, and lite-glass inserts, frame or sill repair and full frame replacement, and multipoint or smart-lock hardware upgrades all use conservative labor + material midpoints from published door installation cost tables. The calculator's high number assumes moderate site-condition risk, not a worst case.
Door type and material are the biggest drivers
Door type and material choice move the total more than any other input. National installed ranges run roughly $1,500-$4,000 for a fiberglass entry door, $900-$2,500 for steel, and $2,500-$8,000 for a solid wood entry door (Angi, 2024). Patio doors run $1,500-$4,500 for sliding and $2,000-$6,000 for French; storm doors run $350-$900, and interior prehung doors run $250-$700 each.
- Fiberglass entry: durable, low-maintenance, wide style range.
- Steel entry: budget-friendly and secure, dents more easily than fiberglass.
- Wood entry: premium look and feel, needs the most upkeep and refinishing.
- Vinyl or aluminum-clad: common on patio sliders and French doors, low maintenance exterior finish.
Quantity and glass options
Quantity scales the project total directly - a whole-house door replacement multiplies the per-door range across every opening. Glass options change the price of an individual door: half-lite or full-lite glass inserts typically add $150-$600, sidelights add $400-$1,200 each, and a transom window adds $300-$900 (Angi, 2024).
Frame & sill condition: the most common surprise cost
Frame and sill condition is the single most common source of change orders in a door replacement project. Minor rot repair typically adds $200-$600, and a full frame replacement (frame and sill both) adds $600-$1,500 (Angi, 2024). Older homes and entries exposed to weather without an overhang are far more likely to need one or both. Skipping needed frame repair isn't optional once a crew pulls the old door - it's the difference between a door that seals properly for years and one that binds, drafts, or leaks within a season.
Hardware upgrades
Hardware is priced separately from the door itself. A multipoint locking system, common on patio and premium entry doors, typically adds $300-$800. A smart lock with keypad or app entry typically adds $200-$500. Bundling a hardware upgrade into the same install visit as the new door is almost always cheaper than paying for a separate service call later (Angi, 2024).
Why the range is so wide
Door installation quotes for the exact same door type routinely land 2 to 3 times apart. Two reasons. First, contractors scope different work: one bids the door swap only, another bids the door plus frame repair plus hardware plus trim and paint touch-up. Second, frame and sill conditions show up once the old door comes out, and those are legitimate change orders, not overcharges.
The calculator's high number assumes moderate site-condition risk. If your frame is known-solid and square, expect the low end. If it's an older home with visible weathering around the entry, budget the high end.
Frequently asked questions
How accurate is this calculator?+
It's a planning tool, not a quote. Your actual bids should land within the range about 80% of the time. The 20% outliers are usually either lowballs that missed a frame-prep item, or premium material and glass upgrades.
Why does frame & sill condition move the total so much?+
Frame and sill repair is priced per door, so it adds directly to your project total. A single rotted sill can add hundreds, and a full frame replacement can add over a thousand, which is why the calculator shows it as its own line item.
Should I trust the low end or the high end when budgeting?+
Budget the high end, especially if your home is older or you haven't confirmed frame condition yet. Most door replacement projects finish closer to the high end once frame prep and hardware are added in.
Does the estimate include hardware?+
Only if you select a multipoint lock or smart lock upgrade. Standard hardware is included in the base door range, which is the cheapest way to keep the total down.
Why does door type matter so much?+
A storm door or interior prehung door is a far smaller job than a full entry or patio door replacement, both in materials and in labor hours. Entry and patio doors involve weatherproofing, frame alignment, and often glass, which is why their ranges run several times higher.
Related door guides
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Tell me a bit about you and I'll tailor the plan to your home and budget. No pressure, no obligation.