24×32 or 32×24 Two (2) or Three (3) Car Garage Plans Blueprints, Free Materials List & Cost Estimate Worksheets

What will it cost to build a 24×32 / 32×24 (3) three car garage with a 16×7 ft and 8×7 ft overhead door, 36 inch pass door and 3×3 window?

Can you afford it? This is an important question you have to answer before you make a commitment to start building.

Cost areas

  • Blueprint, engineering fees
  • Permit fees
  • Site work
  • Foundation, floor
  • Shell
  • Assessories
  • For more information on the costs other than the shell please visit my overall cost estimating webpage.

    Cost of shell

    This materials list is for a 24×32 garage two (2) or three (3) car garage. If you want to make it 32×24 then you’ll need 13) 32ft trusses instead of 17) 24ft trusses, and 2 more 2x4x20ft for the flying rafters.

    This materials list and cost estimate doesn’t include sales tax, cost to paint, or any other necessary items or tools you might need but don’t already have.

    Print this cost estimate worksheet out and take it down to your local building supply store to calculate the cost to build a 24×32 two (2) or three (3) car garage using my garage plans.

    The garage is big enough for a 16 ft and an 8 ft wide door on the 32 ft wall, making it a three 3 car garage.

    If you use only a 16 ft wide door you can put it on either the 24 wall and have a deep 2 car garage. Or put the door on the 32 ft wall and have a nice work space to the side.

    24×32 (2-3) Two-Three Car Garage Plans Cost Estimate Worksheet

    Notes Item Quantity Price Sub Total
    1 2x4x12ft pressure treated 4
    1 2x4x16ft pressure treated 3
    3 2x4x8ft 115
    3 2x4x12ft 8
    3 2x4x16ft 20
    3 2x4x20ft 2
    8 2x6x8ft 7
    6 2x10x10ft 2
    6 2x10x20ft 2
    5 Siding, 4ftx8ft 29
    16 1/2inx4ftx8ft OSB 30
    17 2 1/2inx8ft trim 22
    17 6inx8ft trim 22
    11 36in Pass door 1
    12 Door lock set 1
    21 36in Window 1
    9 16ftx7ft Overhead door 1
    9 8ftx7ft Overhead door 1
    13 Trusses 17
    14 Hurricane ties H2.5 30
    15 Gable end vents 2
    18 Drip edge 13
    19 Felt paper, rolls, 30# 10
    20 Shingles 30
    22 Assorted fasteners
    Grand total

    .
    This materials list assumes you put the pass door and window on the same wall. Which ever wall you put them on the total materials will be the same.

    You can of course add more doors and windows. They are cheap compared to the overall cost of the garage. I’m assuming a 16ft wide overhead door because it’s easier to get into than two 8ft doors.

    24×32 Garage Plans Materials List Breakdown

    Notes Description Size Quantity
    Blank wall, 24ft
    1 Bottom plate, pressure treated 2x4x12ft 2
    2 Top plate, lower 2x4x12ft 2
    2 Top plate, upper 2x4x12ft 2
    3 Studs 2x4x8ft 19
    4 Studs, double corner 2x4x8ft 2
    5 Wall sheeting 4ftx8ft 6
    Blank wall, 32ft
    1 Bottom plate, pressure treated 2x4x16ft 2
    2 Top plate, lower 2x4x16ft 2
    2 Top plate, upper 2x4x16ft 2
    3 Studs 2x4x8ft 25
    4 Studs, double corner 2x4x8ft 2
    5 Wall sheeting 4ftx8ft 8
    Overhead door wall, 32ft
    1 Bottom plate, pressure treated 2x4x16ft 1
    2 Top plate, lower 2x4x16ft 2
    2 Top plate, upper 2x4x16ft 2
    3 Studs 2x4x8ft 14
    5 Wall sheeting 4ftx8ft 5
    6 Door header, 8ft opening 2x10x10ft 2
    6 Door header, 16ft opening 2x10x20ft 2
    7 Door frames 2x4x8ft 8
    8 Overhead door backing 2x6x8ft 7
    9 Overhead door 8ftx7ft 1
    9 Overhead door 16ftx7ft 1
    Door and window wall, 24ft
    1 Bottom plate, pressure treated 2x4x12ft 2
    2 Top plate, lower 2x4x12ft 2
    2 Top plate, upper 2x4x12ft 2
    3 Studs 2x4x8ft 19
    5 Wall sheeting 4ftx8ft 6
    10 Door header 2x4x8ft 1
    Door frame 2x4x8ft 2
    11 Pass door 36in 1
    12 Door lock set Single or double 1
    10 Window header 2x4x8ft 1
    Window frame 2x4x8ft 3
    21 Window 36in 1
    Roof structure
    13 Trusses 24ft 17
    14 Hurricane ties H2.5 30
    15 Gable end vents Sized for trusses 2
    Sheeting for gable ends 4ftx8ft 4
    Blocking between trusses 2x4x8ft 8
    Truss end framing, 34ft 2x4x16ft 2
    Truss end framing 2x4x20ft 2
    Flying rafter supports 2x4x8ft 6
    3 Flying rafters, 13.5ft 2x4x16ft 4
    Truss “rat runs” 2x4x12ft 6
    Truss “X” bracing 2x4x8ft 5
    16 Roof sheeting, 935 sq.ft. 1/2x4ftx8ft OSB 30
    Trim
    17 Corners 2 1/2x8ft 8
    17 Pass door 2 1/2x8ft 3
    17 Window 2 1/2x8ft 2
    17 Overhead door 2 1/2x8ft 9
    17 Overhead door 6x8ft 7
    17 Facia 6x8ft 15
    Roofing materials
    18 Drip edge 10ft lengths 11
    19 Felt paper 30# rolls 10
    20 Shingles Bundles 30
    22 Assorted fasteners

    Materials Notes

    1. Use pressure treated wood for your bottom plates, per most building codes.

    2. Sometimes lumber need to be graded and stamped. Check with your building department before you buy your materials.

    3. Top plates can be almost any length as long as their splice is no closer than 48 inches.

    4. Use double corner studs if you plan on installing drywall later. This will give you some blocking to nail into.

    5. I suggest using 1/2-5/8 in x 4ft x 8ft sheeting because it’s the easiest and most economical option. 4×8 sheets of composite siding that comes with a factory primer will allow you to build with the least cost and in the shortest amount of time. Composite siding holds paint better than real wood siding and speeds construction over using a plywood or OSB base and covering with strips of siding. It comes in various grades and thicknesses depending on your budget. The top of the line if you can afford it is called “Duratemp”. It is 1/2 to 5/8 inch plywood covered with a veneer of composite hard board. This offers the best of both worlds, strength and durability. Also “Smart Panel” offers a 1/2 – 5/8 inch thick OSB siding with a veneer of composite hard board which might be more readily available. Regular composite siding will still give you a long service life as long as you keep it painted properly. Most of them are rated for 20 or 25 years. And it’s a good choice for budget reasons. The only downside is that it’s not available in high humidity areas like Florida and Hawaii.

    6. Overhead door headers up to 16 ft wide on non load bearing (gable end) walls are usually sandwiched 2×10’s. If they are on a load bearing wall (not the gable end) they might need to be engineered. Check with your building department. If you buy a manufactured header the engineering paperwork will be part of the price.

    7. Overhead door frame should have 2 or 3 jack studs on either side.

    8. You will need to line the back of the overhead door frame with 2×6’s to give the door the proper spacing and something to nail the door tract onto.

    9. A 7 ft tall overhead door needs 1 foot of clearance above to install the track. If you need a taller door opening you’ll need to make a garage with taller side walls. If you want to install an electric opener you will need some extra framing for the motor.

    10. Use sandwiched 2×4 headers up to 36 inch opening width. Use sandwiched 2×6 headers for opening greater than 36 inches.

    11. 36 inch pre-hung insulated steel doors are ideal. Make sure it’s pre-drilled for a double lock set.

    12. Get double lock set and have it keyed to match your house door if possible.

    13. Trusses will have to be made by a lumber company and have engineering in most cases. Typically they will be located at 24 inch on center. You’ll have 2 gable end trusses and the rest regular interior trusses. Make sure to specify the size of the gable end vent opening.

    14. Hurricane ties (or h2.5’s) tie the trusses to the top plates. They use special nails. Install one at the end of each truss, except the gable end trusses.

    15. Gable end vents installed in the gable end trusses for ventilation.

    16. 1/2 inch OSB is a less expensive option compared to plywood. But you might want to use plywood around the perimeter where it will be painted on the underside because plywood holds paint better. OSB tends to chip and flake over time. The stated quantity is based on the square footage and doesn’t account for waste. There will be 10-20% waste depending on how you make your cuts. So buy a few extra sheets.

    17. I suggest making your own trim by ripping it out of composite siding. Buy solid sheets without grooves if possible to minimize waste. Otherwise just cut around the grooves in normal siding. No groove siding is siding without the normal grooves in it. You could use regular grooved siding but then you will have no control over where the grooves fall on your cuts. Or else you will have a lot of waste if you try to plan your cuts around the existing grooves in the normal siding. The no groove siding doesn’t need to closely match the main siding. It just needs to match the texture so that it looks good when painted. If necessary you can buy one brand of grooved siding and another brand of no groove siding. Or you can buy ready made trim boards but they are very expensive. As a last alternative you can use real wood for the trim. But I strongly recommend against this because real wood will take lots of extra prep time and effort and still will not give you as nice a finish product as composite hard board trim.

    18. Metal drip edge comes in 10 ft lengths. Either painted or galvanized.

    19. Building codes might specify what weight and how many layers of felt paper, depending on the slope of the roof and the weather in your area. A roll of 30# felt covers 100 sq.ft. The stated quantity is based on the square footage and doesn’t account overlapping and waste.

    20. I suggest using 30 year architectural shingles in the highest quality you can buy. A little extra money spent here on quality will pay off in an extended lifespan and less maintenance. The stated quantity is based on the square footage and doesn’t account waste. You will need another few bundles of normal 3 tab shingles for the starter strips and to cut for ridge caps.

    21. Window can be single or double pane.

    22. Ask your building supply store for their estimate on the amount fasteners you’ll need. Just buy more then you think you need because they’re cheap and you can always use them on other projects.

    Garage Features:

    • Sizes: 1 car (14×24), 2 car (24×24), 3 car (24×32/32×24), 4 car (24×40)
    • Wall height: 8ft standard, 9-12ft optional
    • Stud spacing: 16 inch on center
    • Stud size: 2×4 standard, 2×6 optional
    • Roof pitch: 3:12 minimum
    • Roof covering: Shingles standard, optional: metal, rolled, built up
    • Trusses: Manufactured, available at most any lumber yard or truss company
    • Maximum overhead door opening height: 7 ft (with 8 ft wall height), up to 11 ft (12 ft wall height)
    • Floor: Monopour concrete slab standard, optional: wood, stem wall with concrete slab

    Blueprints available for these 4 size garages

    Typical layout look like this. Click for a larger image.

    Typical layout look like this. Click for a larger image.

    This represents the maximum number of cars you can park inside.

    You don’t have to put all these doors in. You can use fewer doors if you like and have more space left over for other storage. Or add benches and have some nice shop and work space.

    • 1 Car, 14×24
    • 2 Car, 24×24
    • 3 Car, 24×32/32×24
    • 4 Car, 24×40

    14×24 1 car garage

    This garage has an 8×7 ft overhead door centered on the 14 ft gable end wall. You can install a 36 inch pass door and any number of windows on the other 3 walls.

    24×24 2 car garage

    There is a 16×7 ft overhead door installed on the center of any one of the 4 walls. You can install a 36 inch pass door and any number of windows on the other 3 walls.

    This garage is square so you can install the overhead door on the gable end wall or a sidewall, depending on the look you want.

    24×32/32×24 3 car garage

    The difference between a 24×32 and 32×24 garage is the orientation of the trusses and ridge line. Both garages have a 16×7 and a 8×7 overhead door on the 32 ft wall.

    The 24×32 uses 24 ft trusses and the ridge line runs along 32 ft dimension. The 32×24 garage uses 32 ft trusses and the ridge line runs along the 24 ft dimension.

    24×40 4 car garage

    This garage uses 24ft trusses. The 40 ft side wall has 2) 16×7 ft overhead doors and you can install a 36 inch pass door and any number of windows on the other 3 walls.

    Each garage size includes this information:

    1. Notes on material usage
    2. Cost estimate worksheet and detailed materials list
    3. Instructions to customize the “blank” plans
    4. Blueprints: Typical layout with doors and windows marked
    5. Blueprints: Blank with floor
    6. Blueprints: Blank without floor
    7. 1) Notes on materials usage

      These notes will help you understand the components of the materials list and cost estimate worksheets.

      2) Cost estimate worksheet

      Print the cost estimate worksheet of the desired garage size and take it down to your lumber supply store. Fill in the prices to calculate the materials cost for the garage shell. The detailed materials lists shows how the wood is used in each of the 4 walls and the roof structure.

      3) Instructions to customize blank plans

      Use Table A and Figure 1 and fill in the blanks to make any garage layout you prefer. Write directly on the printed blueprints with a black pen. Make a few extra blank copies in case you make a mistake.

      4) Blueprints: Typical Layout

      These plans can be used as is if you like the door and window configuration. Or you can use them as a sample guide to mark the blank plans to your satisfaction.

      5) Blueprints: Blank with floor

      These plans don’t include any doors, windows, roof pitch, wall heigh, or dimensions and allow you to draw in any combination, location, and quantity of overhead doors, pass doors, and windows, etc..

      Use the Typical layout as a guide to customize this blank blueprint to your specifications.

      6) Blueprints: Blank without floor

      Standard floor and foundation is a mono-pour concrete slab. But with these blank plans you can provide your own supplemental diagram and build with a wood floor or a stem wall and concrete slab.

      Additional notes

      • Electronic delivery
      • Building codes
      • Additional engineering
      • Blueprint size and format

      Electronic delivery

      A link to download these plans in PDF format will be delivered to the email address associated with your paypal account within seconds of your purchase.

      Please save these files in your phone or computer so you can read or print them any time you want.

      Building codes

      These blueprints will meet building codes in most cases. But sometimes additional information is required that can usually be hand written on the blueprints with the guidance of your local building department staff.

      Most of the time just a few hand written changes or additions is all it takes to make the building department happy. They are usually pretty understanding with homeowners with little or no experience in the building permit process and will tell you exactly what they want in order to approve the plans.

      Additional Engineering

      If your building department requires engineering for the trusses or custom header that is typically built into the price of the trusses or header.

      Additional engineering might be required if you live in an area with extreme weather like lots of rain, snow, humidity, wind or seismic activity.

      Blueprint size and format

      The printed size of the blueprints are 36″x24″.

      Blueprints are in PDF format so you will have to print them out yourself. You can open them in a standard PDF reader and print them out in 8.5×11 size.

      But you will have to go to a print shop to have them printed out in full 36″x24″ size. Most print and blueprint shops can do this for about $1-$2 per copy. They can even re-scan them back into PDF format after you have marked them up to your specifications.

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      Available Now!

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