Our pre-built Flat Dormer Sheds offer the same utility as a our Garden Sheds, but come with the added flare of a decorative transom dormer offering an abundance of natural interior light. This design makes for an outstanding backyard shed for use in the garden, around the pool, or even as a studio or workshop. Customize your Flat Dormer Shed with taller walls, shelving, storage lofts, electric, and more to fit your needs.
- 4×6 Pressure Treated Runners
- 2×6 Pressure Treated Floor Joists on 16” Centers (12” Joist Spacing Available On Any Building As An Upgrade)
- ¾” Pressure Treated Subfloors
- 2×4 Wall Studs on 16” Centers (24” Wall Stud Spacing on Metal Buildings)
- Stock Metal or Shingle Roof with Astro Armor Reflective Insulation or 7/16″ OSB Sheathing
- Double 36” Wide Barn-Style Doors with Deadbolt Lock, and Locking Handle With Keys
- Standard 6’3 Wall Height with Steeper Roof Pitch For Larger Interior Space (Taller Walls Available As An Upgrade)
- All Vinyl Dormer Sheds include Fiberglass Doors & Decorative Window Shutters
- 12′ and 14′ Wide Buildings Are Measured From Eave to Eave

Flat Dormer Sheds with Wood Smartsiding (Stained or Painted) OR Metal Siding
SIZE | PRICE | 36 Month RTO | 48 Month RTO |
8×12 | $4,075 | $188.66 | $169.79 |
10×12 | $4,655 | $215.51 | $193.96 |
10×16 | $5,375 | $248.84 | $223.96 |
10×20 | $6,100 | $282.41 | $254.17 |
12×16 | $6,100 | $282.41 | $254.17 |
12×20 | $6,970 | $322.69 | $290.42 |
12×24 | $7,845 | $363.19 | $326.88 |
12×28 | $8,710 | $403.24 | $362.92 |
12×30 | $9,140 | $423.15 | $380.83 |
12×32 | $9,575 | $443.29 | $398.96 |
12×36 | $10,435 | $483.10 | $434.79 |
14×20 | $8,570 | $396.76 | $357.08 |
14×24 | $9,555 | $442.36 | $398.13 |
14×28 | $10,530 | $487.50 | $438.75 |
14×30 | $11,030 | $510.65 | $459.58 |
14×32 | $11,525 | $533.56 | $480.21 |
14×36 | $12,505 | $578.94 | $521.04 |
14×40 | $13,490 | $624.54 | $562.08 |
Flat Dormer Sheds with Dutchlap Vinyl Siding
SIZE | PRICE | 36 Month RTO | 48 Month RTO |
8×12 | $4,360 | $201.85 | $181.67 |
10×12 | $4,995 | $231.25 | $208.13 |
10×16 | $5,795 | $268.29 | $241.46 |
10×20 | $6,595 | $305.32 | $274.79 |
12×16 | $6,595 | $305.32 | $274.79 |
12×20 | $7,545 | $349.31 | $314.38 |
12×24 | $8,510 | $393.98 | $354.58 |
12×28 | $9,465 | $438.19 | $394.38 |
12×30 | $9,935 | $459.95 | $413.96 |
12×32 | $10,420 | $482.41 | $434.17 |
12×36 | $11,370 | $526.39 | $473.75 |
14×20 | $9,300 | $430.56 | $387.50 |
14×24 | $10,380 | $480.56 | $432.50 |
14×28 | $11,470 | $531.02 | $477.92 |
14×30 | $12,015 | $556.25 | $500.63 |
14×32 | $12,555 | $581.25 | $523.13 |
14×28 | $13,640 | $631.48 | $568.33 |
14×40 | $14,720 | $681.48 | $613.33 |
Prices Do Not Include Sales Tax
Custom Sizes Available From 8×8 Up To 14×40
12′ and 14′ Wide Buildings Are Measured From Eave to Eave
Due To Volatility In Building Material Prices, Prices Are Subject To Change
Contact Us For A Quote On A Custom Size