dormer cost

Gable Dormer Framing Detail

The average dormer cost is $4,500 for the framing, roofing, a window and finishing inside the home.

Get a free dormer cost estimate with our attic finishing cost calculator.  click here

The dormer addition cost varies greatly by the four home addition cost drivers:

1. the location of the home which impacts the labor costs and to some extent the cost of materials.

2. the size and design of the dormer addition.  A shed dormer, a gable dormer an eyebrow dormer, hip dormer all require different trim and roofing solutions on the exterior.  The interior changes in the home are impacted as well by the type and cost of the window and the finished wall and floor surfaces.

3. who does the work.  Will you build the dormer yourself and just pay for material or hire an architect and a general contractor to do all the work.  Labor for dormers additions make up more than 50% of the cost of the project so who you hire to do the work will have a big impact on the final cost.

4. the materials you choose.  The cost of the window, roofing, flooring and siding will have a big impact on the total cost of your dormer addition.  If you choose lower cost asphalt shingles, a simple vinyl single hung window, vinyl siding and carpet floors on the interior your dormer cost could be 50% less than if you have tile roof, an expensive custom window, wood shake siding and hardwood flooring on the inside.


Frequently Asked Questions:

Question: How do I get a dormer estimate?

Answer:  Get a dormer cost estimate using our dormer cost estimating tool.  To get a dormer estimate from a contractor you will need a design. a window selected and a decision about your roof – should you match the existing roof material on the dormer or reroof the entire house.  You will also need to decide about the flooring inside the home – how should the floor and inside of the dormer be finished?


Questions: What are typical dormer addition costs?

Answer:  If you are adding a dormer to an existing usable attic space then a dormer addition will be between $3,000 and $12,000 depending on who will do the work the roofing materials and the design.  The type of roofing material, and the interior finishing of the new dormer space have big impacts on the cost a dormer addition project.


Question:  How much does it cost to add a shed dormer?

Question: How much does it cost to dormer a cape

Question: Where is there a dormer cost calculator?

Question:  What is the cost for a hip dormer addition?

Question: How to add a dormer to a house?