Take these steps to help select a professional to install a dog door:

• Verify their license and insurance: A general contractor or handyman license may be required, and you’ll want to confirm they have general liability insurance. Requirements vary by region.

• Get several estimates: A proper estimate should break down the costs for labor, materials, and the door itself if they provide it. Comparing a few estimates can help you find a fair price for your specific pet door installation.

• Read their reviews: Look for comments mentioning a clean worksite, a secure fit, and a draft-free seal. Red flags include complaints about damage to the door or wall, leaks, or poor-fitting flaps.

• Look at their portfolios: Check for photos of past installations in materials similar to yours, like wood, glass, or even a wall. The finished product should look seamless and professional.

• Find out if they have warranties: Ask if they guarantee their workmanship against issues like leaks or drafts. The dog door itself should also come with a separate manufacturer's warranty.

• Ask important questions: Before hiring, ask questions like, “What’s your experience with this type of door or wall material?” and “How do you weatherproof the installation?”

The cost of a dog door project will depend on factors like:

• The door itself: The price of the dog door can range from a simple flap model to a high-tech electronic or microchip-activated version. Larger sizes also typically cost more than smaller ones.

• Type of installation: Putting a dog door in an existing door is usually the most straightforward option. Installing one through a wall — especially brick or stucco — is more complex and can cost more.

• Your home’s materials: The material the pro needs to cut through matters. A standard wood or hollow-core door is simpler to work with than solid wood, metal, or glass.

• Labor and complexity: The time it takes to complete the job will affect the final price. Labor for a professional pet door installation can also vary based on your location and the pro’s experience.

• Extra repairs or framing: If the installation requires new framing, weatherproofing, or repairs to the surrounding wall or door, this may add to the overall cost.

In many cases, it's recommended that you hire a pro for this project. Some of the biggest benefits of hiring a professional dog door installer are:

1. Proper installation. A pro helps ensure the door is installed correctly in various materials like wood, glass, or even brick walls. This can prevent structural damage, drafts, and leaks.

2. Ideal placement. They can help you choose the right spot and height for the door based on your dog’s size and breed, ensuring it’s safe and comfortable for your pet to use.

3. The right tools and skills. Professionals who handle pet door installation come equipped with the specialized tools needed for a clean cut and secure fit, saving you time and expense.

4. Enhanced security. A poorly installed pet door can be a weak point in your home’s security. A professional installation ensures the frame is secure and the locking mechanisms work correctly.

5. Weatherproofing. Pros will properly seal and insulate the dog door, which helps maintain your home's energy efficiency and prevents rain or cold air from getting inside.

It should take one to three hours for a professional to install a dog door, depending on:

• The material of your door or wall — cutting through brick or glass takes longer than wood.

• More complex pet door models, like electronic or heavily insulated versions, can require extra steps during installation.

• The specific location for the door can affect the timeline if it's in an awkward or hard-to-reach spot.

• Any need for structural modifications, such as adding new framing, will extend the project's duration.

• Finishing touches like sealing and weatherproofing the new door to prevent drafts also factor into the total time.

Remember: The timeline for your project will vary depending on many factors. Always ask your pro to provide an estimate.

Dog door installation involves creating a properly sized opening and securely fitting the pet door so it’s safe, weatherproof, and easy to use.

During your pro’s visit, you may expect them to first confirm the ideal placement for the door and measure your pet to ensure the opening is at a comfortable height. They will then prep the work area to protect your home before precisely cutting the opening into the door or wall.

Once the pet door is fitted, they’ll likely make sure it’s securely installed and properly sealed to prevent any drafts or leaks. Finally, they should clean up the space and answer any questions you have about using the new door.