ArcaMax

The front door of a house is its focal point, so replacing one can make a dramatic difference to its appearance. It also improves security, an investment that pays back in the future. You’ll find a wide range of styles, shapes and designs at a door and window store or home center. To understand the steps involved in installing a pre-hung door, go to www.thermatru.com, a manufacturer’s site, where you can see a video or download instructions.

To remove an existing door and install a new prehung fiberglass door, a carpenter or door installation contractor will charge $1,160, which includes the door and installation. You can remove the old door, buy a new one and install it for $800, the cost of the door, assuming you have basic carpentry skills and tools.

A pre-hung door is mounted with hinges on a jamb that surrounds the door, which is pre-drilled for door handles and locks so they line up properly. Many have reinforced steel plates behind the locking mechanisms for added security. A door opening is usually built with double studs on both sides; if the opening requires additional reconstruction or repair work, budget more time and money, and reconsider whether you should do it yourself.

Pro Cost: $1,160 — DIY Cost: $800 — Pro time: 4.0 DIY Time: 6.0 — DIY Savings: $360 — Percent Saved: 31%

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To find more DIY project costs and to post comments and questions, visit www.diyornot.com and m.diyornot.com on smartphones.

©2025 Gene and Katie Hamilton. Distributed by Tribune Content Agency, LLC.