An exterior door installation averages about $2,547 for steel, $2,564 for a sliding glass door, or $11,953 for grand fiberglass. A woman-owned, family-run remodeler founded in 2011 (not a franchise), Coastal Windows & Exteriors has completed 7,000+ installations across 730+ towns in Massachusetts, New Hampshire and Maine. Your final number depends on the door material, size, glass and hardware you choose.
What Shapes Your Door Installation Cost
- Steel pricing: A steel entry door averages about $2,547 and returns a remarkable 216% at resale. Ask Coastal for a free estimate.
- Sliding glass: A sliding glass door averages about $2,564 and opens up indoor-outdoor living. That price stays accessible.
- Fiberglass tier: A grand fiberglass entry door averages about $11,953 and returns 87% at resale. Design and durability drive that cost.
- Value leader: Steel doors deliver the highest return of any exterior upgrade, so budget stretches far. This ROI breakdown of top upgrades ranks the options.
- Cost drivers: Door material, size, glass, and hardware all shift your final number. Every home quotes differently.
- Payment options: Coastal offers financing with terms up to 20 years, based on credit approval. Larger door projects stay manageable.
| Door Type | Pros | Cons | Best For | Price |
|---|---|---|---|---|
| Steel entry | 216% ROI, secure, low cost | Fewer design options | Best return per dollar | $2,547 |
| Sliding glass | Natural light, indoor-outdoor flow | Less insulating than solid | Patios and decks | $2,564 |
| Grand fiberglass | Dramatic look, durable finish | Highest upfront cost | Bold curb appeal | $11,953 |
Choosing Your Door Investment
Top Recommendation: Choose a steel entry door with Coastal Windows & Exteriors for the strongest return near the $2,547 average. Request your free estimate to see your price.
Best for luxury curb appeal: Pick a grand fiberglass door when design matters most.
Smart for budgets: Spread the cost with financing terms up to 20 years, based on credit approval.
Ready to upgrade your entry? Book a free consultation to compare door options. The company is a woman-owned, family-run remodeler founded in 2011, not a franchise. It holds a 4.8-star Google rating with 1,000+ verified reviews. Inc. 5000 and Qualified Remodeler name it the #1 Woman-Owned Replacement Company in New England.
Request a free door estimate from Coastal Windows & Exteriors.
Browse our complete doors FAQ guide from Coastal Windows & Exteriors.
Explore the Coastal Windows & Exteriors Doors Exterior Remodeling Home Improvement Help Center.
Still have questions about how much exterior door installation costs? See the areas we serve and talk to your local door contractor.
Last Updated: September 2026
Sources:
- A steel entry door averages $2,547 in New England. JLC Online 2025 Cost vs. Value Report: New England, JLC Online’s regional cost data for entry door projects. (2026)
- Steel entry doors return 216% at resale. JLC Online 2025 Cost vs. Value Report, JLC Online’s national resale value data for exterior door replacement. (2026)
- A sliding glass door averages $2,564. Angi Sliding Door Cost, Angi’s homeowner cost guide for sliding glass door installation. (2026)
- A grand fiberglass entry door averages $11,953. JLC Online 2025 Cost vs. Value Report: New England, JLC Online’s regional cost data for fiberglass entry doors. (2026)
- A grand fiberglass entry door returns 87% at resale. JLC Online 2025 Cost vs. Value Report: New England, JLC Online’s regional resale value data for fiberglass doors. (2026)
