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Addition House Plans

If you already have a home that you love but need some more space, check out these addition plans. We have covered the common types of additions, including garages with apartments, first floor expansions, and second story expansions with new shed dormers. Even if you are just looking for a new porch to add country charm and value to your house, we have that, too! Our additions are detached or made with smaller Cape Cod, bungalow, and Craftsman houses in mind. They also come with different uses—some create new master suites or bedrooms, while others increase living spaces and offer brand new, expanded kitchens. These additions have been made available as generic stock plans, and if they can be adapted to your existing home, they offer a less expensive alternative than having custom plans drawn up. If you need assistance choosing an addition, please email, live chat, or call us at 866-214-2242 and we'll be happy to help!

Featured Home Design
Addition House Plans
House Plan 5179

Filter Addition House Plans

    Square Feet to
Plans Found: 46
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  • 1,794 sq. ft.
    THD-8737 show plan details
    Beds
    3
    Baths
    2
    Garages
    2
    Stories
    1
    Width
    73' 2"
    Depth
    45' 10"
  • 1,040 sq. ft.
    THD-4541 show plan details
    Beds
    Baths
    Garages
    3
    Stories
    1
    Width
    40' 0"
    Depth
    26' 0"
  • 322 sq. ft.
    THD-7221 show plan details
    Beds
    1
    Baths
    1
    Garages
    N/A
    Stories
    1
    Width
    14' 0"
    Depth
    23' 0"
  • 336 sq. ft.
    THD-7210 show plan details
    Beds
    1
    Baths
    1
    Garages
    1
    Stories
    2
    Width
    17' 6"
    Depth
    24' 0"
  • 546 sq. ft.
    THD-1984 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    2
    Width
    26' 6"
    Depth
    23' 0"
  • 628 sq. ft.
    THD-5589 show plan details
    Beds
    1
    Baths
    1
    Garages
    N/A
    Stories
    2
    Width
    15' 0"
    Depth
    24' 0"
  • 2,000 sq. ft.
    THD-2006 show plan details
    Beds
    Baths
    2
    Garages
    N/A
    Stories
    2
    Width
    65' 0"
    Depth
    36' 0"
  • 1,150 sq. ft.
    THD-8306 show plan details
    Beds
    1
    Baths
    1
    Garages
    4
    Stories
    1.5
    Width
    58' 0"
    Depth
    30' 0"
  • 355 sq. ft.
    THD-4678 show plan details
    Beds
    Baths
    Garages
    1
    Stories
    1
    Width
    16' 0"
    Depth
    22' 0"
  • 360 sq. ft.
    THD-4960 show plan details
    Beds
    1
    Baths
    1
    Garages
    N/A
    Stories
    1
    Width
    28' 0"
    Depth
    20' 0"
  • 846 sq. ft.
    THD-8304 show plan details
    Beds
    1
    Baths
    1
    Garages
    3
    Stories
    1.5
    Width
    40' 0"
    Depth
    24' 0"
  • 953 sq. ft.
    THD-4567 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    2
    Width
    21' 4"
    Depth
    28' 4"
  • 512 sq. ft.
    THD-8090 show plan details
    Beds
    1
    Baths
    1
    Garages
    2
    Stories
    1.5
    Width
    23' 10"
    Depth
    28' 0"
  • 2,154 sq. ft.
    THD-4681 show plan details
    Beds
    Baths
    Garages
    3
    Stories
    2
    Width
    42' 0"
    Depth
    42' 0"
  • 1,014 sq. ft.
    THD-1218 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    1.5
    Width
    20' 0"
    Depth
    30' 0"
  • 1,015 sq. ft.
    THD-3264 show plan details
    Beds
    1
    Baths
    1.5
    Garages
    2
    Stories
    2
    Width
    24' 0"
    Depth
    36' 0"
  • 480 sq. ft.
    THD-6265 show plan details
    Beds
    Baths
    Garages
    1
    Stories
    1
    Width
    20' 0"
    Depth
    24' 0"
  • 360 sq. ft.
    THD-4959 show plan details
    Beds
    1
    Baths
    1
    Garages
    N/A
    Stories
    1
    Width
    28' 0"
    Depth
    20' 0"
  • 484 sq. ft.
    THD-8307 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    1
    Width
    22' 0"
    Depth
    22' 0"
  • 816 sq. ft.
    THD-8089 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    1
    Width
    22' 0"
    Depth
    24' 0"
  • 988 sq. ft.
    THD-4784 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    1
    Width
    38' 0"
    Depth
    26' 0"
  • 384 sq. ft.
    THD-4771 show plan details
    Beds
    Baths
    Garages
    1
    Stories
    1
    Width
    18' 0"
    Depth
    24' 0"
  • 528 sq. ft.
    THD-6345 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    1
    Width
    22' 0"
    Depth
    24' 0"
  • 624 sq. ft.
    THD-4785 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    1
    Width
    26' 0"
    Depth
    24' 0"
  • 624 sq. ft.
    THD-6346 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    1.5
    Width
    24' 0"
    Depth
    26' 0"
  • 672 sq. ft.
    THD-5316 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    1
    Width
    28' 0"
    Depth
    24' 0"
  • 672 sq. ft.
    THD-4679 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    1
    Width
    24' 0"
    Depth
    28' 0"
  • 780 sq. ft.
    THD-6347 show plan details
    Beds
    1
    Baths
    Garages
    2
    Stories
    1.5
    Width
    26' 0"
    Depth
    30' 0"
  • 984 sq. ft.
    THD-4634 show plan details
    Beds
    Baths
    Garages
    2
    Stories
    2
    Width
    22' 0"
    Depth
    28' 0"
  • 992 sq. ft.
    THD-4780 show plan details
    Beds
    2
    Baths
    1.5
    Garages
    2
    Stories
    2
    Width
    28' 0"
    Depth
    32' 0"
  • 1,028 sq. ft.
    THD-9825 show plan details
    Beds
    1
    Baths
    1.5
    Garages
    1
    Stories
    2
    Width
    24' 0"
    Depth
    36' 0"
  • 1,398 sq. ft.
    THD-4654 show plan details
    Beds
    Baths
    Garages
    3
    Stories
    2
    Width
    36' 0"
    Depth
    22' 4"
  • 2,342 sq. ft.
    THD-4782 show plan details
    Beds
    Baths
    Garages
    3
    Stories
    2
    Width
    48' 0"
    Depth
    42' 0"
  • 2,729 sq. ft.
    THD-9507 show plan details
    Beds
    3
    Baths
    2
    Garages
    2
    Stories
    2
    Width
    63' 4"
    Depth
    38' 0"
  • 3,099 sq. ft.
    THD-9677 show plan details
    Beds
    1
    Baths
    1
    Garages
    N/A
    Stories
    2
    Width
    44' 0"
    Depth
    52' 0"
  • 4,222 sq. ft.
    THD-7114 show plan details
    Beds
    4
    Baths
    3.5
    Garages
    3
    Stories
    1
    Width
    85' 0"
    Depth
    81' 0"
  • 440 sq. ft.
    THD-5176 show plan details
    Beds
    Baths
    Garages
    N/A
    Stories
    2
    Width
    29' 0"
    Depth
    0' 0"
  • 1,042 sq. ft.
    THD-4276 show plan details
    Beds
    2
    Baths
    1
    Garages
    2
    Stories
    2
    Width
    24' 0"
    Depth
    36' 0"
  • 108 sq. ft.
    THD-6232 show plan details
    Beds
    Baths
    Garages
    N/A
    Stories
    1
    Width
    15' 0"
    Depth
    7' 0"
  • 192 sq. ft.
    THD-7073 show plan details
    Beds
    Baths
    Garages
    N/A
    Stories
    1
    Width
    12' 0"
    Depth
    16' 0"
  • 200 sq. ft.
    THD-6239 show plan details
    Beds
    Baths
    Garages
    N/A
    Stories
    1
    Width
    39' 0"
    Depth
    5' 0"
  • 315 sq. ft.
    THD-6237 show plan details
    Beds
    Baths
    Garages
    N/A
    Stories
    1
    Width
    18' 0"
    Depth
    18' 0"
  • 432 sq. ft.
    THD-5177 show plan details
    Beds
    Baths
    Garages
    N/A
    Stories
    2
    Width
    27' 0"
    Depth
    7' 0"
  • 492 sq. ft.
    THD-5175 show plan details
    Beds
    Baths
    Garages
    N/A
    Stories
    1
    Width
    13' 0"
    Depth
    38' 0"
  • 794 sq. ft.
    THD-5179 show plan details
    Beds
    Baths
    Garages
    N/A
    Stories
    2
    Width
    34' 0"
    Depth
    26' 0"
  • 800 sq. ft.
    THD-6236 show plan details
    Beds
    Baths
    Garages
    N/A
    Stories
    2
    Width
    25' 0"
    Depth
    18' 4"

Filter Addition House Plans

    Square Feet to
Plans Found: 46
< Page /1 >