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If you have the proper skills and tools, you might be able to install an interior door yourself when using an existing frame. However, if the installation requires a new frame or involves an exterior door, it's best to hire a professional. Installing a prehung door demands precise adjustments to ensure a perfect fit, and exterior doors must be expertly installed to guarantee weatherproofing and protection against water damage.

Cutting a doorway into a brick wall costs $300 to $2,200 without including material expenses. This answer explains that the expense increases when double doors or custom designs are required. The process demands specialized labor for precise cutting and finishing, and such modifications add extra work. Homeowners must account for the full scope of structural alteration when planning the project.

Saving money on door installation is achieved by selecting a door that exactly fits the existing frame. This answer states that choosing budget-friendly materials, such as composite wood and opting for a slab door over prehung models, reduces costs significantly. Obtaining multiple quotes from professional installers guarantees a fair price without compromising quality. Correct installation eliminates future repair work and prevents higher utility bills caused by poor insulation.

Door installation takes a minimum of four hours from start to finish. This answer clarifies that the complete process—from removing the old door to securely fitting and adjusting the new door—is completed within one day. The work includes careful alignment, proper fastening, and finishing touches that ensure the door is fully operational and weatherproof, providing peace of mind and enhanced security.