Search thousands of topics on CostHelper.com

BROWSE ALL TOPICS >> appliances babies & children  cars  consumer electronics health & personal care home & garden personal finance  pets  schools small business weddings
CostHelper > Home and Garden  > Construction & Renovation > Dormer

Dormer Cost


How Much Does a Dormer Cost?

 
low costDIY Dormer: $1,800+average costMedium: Generally $2,500-$5,000+high costFor a Large Dormer: $5,000-$20,000+
post E-mail post Post   Comments (2)

Although the terms are often used interchangeably, a "dormer" is a horizontal extension of an upper room that protrudes from a sloping roof, and a "dormer window" is a window located in that extension. Dormers can be just big enough to hold a single window, simply to let more light into an attic or other upper room, or as tall and as wide as the house, creating additional livable space where there used to be a sloping inside ceiling. A large dormer will often be the main element of an attic conversion or remodeling.

Typical costs:

  • The Family Handyman magazine estimates it takes about $1,800 in materials for a do-it-yourselfer to build a dormer about 6 feet wide and 9 feet high, with one window. In addition to basic carpentry tools, the project requires a circular saw, a reciprocating saw, a framing square and 2- and 4-foot levels.
  • Hiring someone to build a small dormer the width of a single- or double-wide window can run $2,500-$5,000 or more, depending on size, the slope of the roof, the strength of the existing roof support system and other factors. A larger, more room-size dormer can run $5,000-$20,000. Prices may vary considerably by region.
  • These prices are generally for exterior work only; there will be additional costs for drywall, painting, flooring, carpets and other finishing work (total cost will depend a great deal on the type and quality of inside materials selected). Larger dormers are often the centerpiece of an attic conversion project. Remodeling Magazine estimates that the average cost for a complete attic conversion with a 15-foot dormer plus bathroom (including finishing the interior) averages $40,800-$58,900 nationwide.
Related articles: Replacement Windows, Attic Remodeling, Bay Window, Skylight

What should be included:
  • To add a dormer, a hole is cut in the roof, the dormer frame is erected, then it's roofed, waterproofed and finished to match the rest of the house. A dormer can be built in place piece by piece, or it can be framed on the ground and lifted into place. A small dormer can usually be added in a day, but larger projects can take several days or more. The Family Handyman magazine offers free plans and instructions for a 6x9-foot dormer with a single window. BobVila.com provides a video showing the in-place construction of a third-floor dormer.
  • Generally dormer windows should match the other windows, to give a uniform look. It's also important that the dormer look neither too large nor too small in comparison to the rest of the house. ThisOldHouse.com provides a photo gallery illustrating how to visually blend[1] a dormer. RemodelorMove.com discusses nine different[2] types of dormers and the house styles they go with best.
  • Check with your local planning department to see whether your neighborhood has any building restrictions on dormers, to obtain a building permit for your project and to arrange for any required inspections.
Additional costs:
  • For do-it-yourselfers, working on a roof can be dangerous. The Family Handyman magazine recommends that do-it-yourselfers buy a personal fall arrest system for around $250 or rent one for about $35 a day. You might also want to use metal roofing brackets (about $8 each) and 2x10 planks to provide solid footing.
Shopping for a dormer:
  • ThisOldHouse provides photo galleries illustrating dormer types[3] and dormer windows[4] .
  • Get several estimates, making clear what is (and isn't) included in each quote. Request and check references; ask about the contractor's length and type of experience; and be sure they're properly bonded, insured and licensed[5] in your state. See if there are any complaints listed with the Better Business Bureau[6] .
  • RenovationExperts.com lists tips[7] for hiring a contractor.
post E-mail post Post   Comments (2)
CostHelper News


Forgotten Expenses In a Home Addition Budget
Items like construction costs, permit fees or debris removal aren't the only expenses to consider when calculating the total costs of a home remodeling project. || Posted August 5 2013


Girl Scout Cookies Marijuana Selling for $5,000 a Pound
Would you like to smoke some Peyton Manning? Or, would you prefer to spark up some Girl Scout Cookies?Marijuana growers and venders are getting creative with the highly recognizable names they give different strains of weed, without the permission o. || Posted October 18 2013

‣ All CostHelper Blog Posts


What People Are Paying - Recent Comments
Cost for 500 sq ft dormer in ny
Amount: $0.00 total
Posted by: Ct in Nb, NY.Posted: May 23rd, 2014 09:05PM
Anyone know how much this would cost?
Was this post helpful to you?   yes     no Report prohibited or spam
Dormer
Amount: $0.00 total
Posted by: Shady in Bellmore, NY.Posted: June 14th, 2010 06:06PM
What would be a good guess on the cost of a half dormer? The house already has a one half.
Was this post helpful to you?   yes     no Report prohibited or spam


 

Comment On Your Experience With a Dormer
 
Subject:  *
Amount Spent:  * total
Comments: 
Purchased:  Year: 
City:  * State:  *
 
Information about you:
Email:  * Email addresses are not displayed.
Name:  This is the name we'll display with your post.
me on this computer
*=required field.
 



External Resources:
  1.  www.thisoldhouse.com/toh/photos/0,,1211376,00.html#
  2.  www.remodelormove.com/remodeling-and-home-improvement-articles
  3.  www.thisoldhouse.com/toh/photos/0,,1211203,00.html
  4.  www.thisoldhouse.com/toh/photos/0,,1211329,00.html
  5.  www.contractors-license.org/
  6.  us.bbb.org/WWWRoot/SitePage.aspx?site=113&id=46a6a9cd-5402-454e-9476-e4df22e6f371
  7.  www.renovationexperts.com/beforehire.asp
More Home and Garden Topics
Check Out All Costs for Home and Garden How Much Does a Furnace Cost? How Much Does Garden Service Cost? How Much Does a Kitchen Remodeling Cost?

Search Thousands of Topics on CostHelper.com




Today's Featured Cost Articles

About CostHelper
CostHelper is based in Silicon Valley and provides consumers with unbiased price information about thousands of goods and services. Our writers are experienced journalists who adhere to our strict editorial ethics policy.

CostHelper Community
Rabies Shots
Paid: 1662.82
My daughter was scratched by a stray cat. She's away at college. She went to get rabies shots and the original bill was $14,411.50. Our insurance paid all but $1662. This is outrageous... [more]
-Vivian
Rabies Vaccine Cost
Septic Inspection and Pumping
Paid: 500.00
Located and dug up, inspected, replaced filter, pumped 1,500 gallon tank, filled back holes. Last maintenance is unknown as we purchased home not knowing septic history... [more]
-Ella B
Septic Tank Cleaning Cost
Cost of mammogram
Paid: 901.81
Bill was 1196.01, BCBS said they could only charge 901.81. Really?? I pay $2000 a year for insurance and this is it. It was CONSIDERED a diagnostic mammogram because I turned 40 and my OB/GYN said I needed to have one... [more]
-MLS765
Mammogram Cost
Painting interior
Paid: 1900.00
I'm having the interior painted one color. I am paying $ 1900 to have all common rooms painted, not including bedrooms. I have a two story house and the living room has 20 foot tall walls... [more]
-Lucy106
Painting a House Cost
partial house rewire
Paid: 5000.00
We live in Southern California in a 1500 square foot historical home--built in 1947. The electrician charged $2700 to upgrade the panel from a 100 amp to a 200 amp. We had to apply for and pay for the city permit ourselves... [more]
-jukeboxjohnnie
Rewiring a House Cost
FELDCO in wisconsin
Paid: 11118.00
I own a duplex and replaced 12 windows, both front doors, and added aluminum storm doors to both sides. The windows ran about $7700. The 2 Front Doors and Storm doors $3418... [more]
-
Replacement Windows Cost