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Glam Journal

How much does it cost to add a master bedroom and bathroom?

Author

David Craig

Updated on April 04, 2026

How much does it cost to add a master bedroom and bathroom?

How Much Does it Cost to Add a Master Bedroom and Bath? For a master suite addition, you will pay $25,000 to $100,000 or $62,500 on average. Adding a bedroom and bathroom to your home typically falls in the $35,000 to $84,000 range, depending on These projects are usually $80 to $200 per square foot.

How much does it cost to add a master suite above a garage?

Adding a bonus room over your garage runs around $115 per square foot. Overall, you can expect to pay about $45,000 on average for this project. You may need to make structural changes to the existing garage to support the bonus room, which will also increase the price.

How much does it cost to add an extra bedroom?

The cost to add a bedroom is $100 to $155 per square foot, or about $10,300 to $24,900 on average. A small 12×12 bedroom (144-square-feet) with a foundation and a roof will cost in the neighborhood of $12,400 to $22,300 if you choose to add it to the side of the house.

How much does it cost to add a master bedroom?

For a master suite addition, you will pay $25,000 to $100,000 or $62,500 on average. Adding a bedroom and bathroom to your home typically falls in the $35,000 to $84,000 range, depending on the room size, features and material quality.

Can a master suite increase the value of a home?

The amenities and extra features provided by a master suite can increase the appeal and value of a home, as can the addition of a bathroom as well as a bedroom. Remodeling Magazine releases an annual survey on the average cost of the most popular home improvements and their return values.

How much does it cost to add a family room to a house?

Cost to add a family room: $86,615 to add a 16-by-25-foot room with drywall and a prefinished hardwood floor. Cost to add a master suite: $115,810 to add a 24-by-16-foot master bedroom that includes a walk-in closet and bathroom en suite.

What’s the average cost of a bedroom addition?

If you’re adding weight to your foundation, you may need a report from a structural engineer at a cost of $300-$800 or more, to see if your existing foundation needs to be reinforced or repaired. You’ll probably need a set of plans for your bedroom addition.

For a master suite addition, you will pay $25,000 to $100,000 or $62,500 on average. Adding a bedroom and bathroom to your home typically falls in the $35,000 to $84,000 range, depending on the room size, features and material quality.

How big of an addition do you need for a master suite?

Longing for a master suite, they enlisted Mosby Building Arts, who created the solution to build a bathroom and walk-in closet room addition to the rear of their home, thus turning their bedroom into a master suite. There was plenty of room in the backyard ( shown above) to build a 13 x 13 foot addition.

Can you add a bathroom to a master suite?

The family loved the home they bought in Clayton, MO except for one thing – there was only one bathroom on the ground floor. Longing for a master suite, they enlisted Mosby Building Arts, who created the solution to build a bathroom and walk-in closet room addition to the rear of their home, thus turning their bedroom into a master suite.

Cost to add a family room: $86,615 to add a 16-by-25-foot room with drywall and a prefinished hardwood floor. Cost to add a master suite: $115,810 to add a 24-by-16-foot master bedroom that includes a walk-in closet and bathroom en suite.