18x20x14 Metal Building
360 Sq Ft Metal Building Size, Cost, Uses & Specifications
A 18x20x14 metal building provides a 360 square foot footprint with a 14-foot eave. Use this independent guide to compare real-use fit, floor planning, cost, clearance, concrete, steel building considerations and barndo potential before requesting quotes.
Floor Area
Width
Length
Eave Height
Planning Kit Range
What Fits in a 18x20x14 Metal Building?
Use the footprint first. Height determines the kind of doors, lifts, racks and tall equipment that remain practical.
Strong compact garage and workshop size
Comfortable room for one vehicle with benches and wall storage.
Possible with sensible door placement and limited side storage.
Good for mowers, compact tractors, tools and seasonal equipment.
Useful footprint for fabrication, woodworking or project space.
Garage + Workshop
Keep the primary bay open and dedicate a wall to workbenches, tools and storage.
Equipment Storage
Use the building depth for compact equipment, seasonal storage and organized access.
Two-Car Storage
Works best when permanent cabinets are shallow and overhead doors are carefully planned.
How This Metal Building Behaves in Daily Use
Garage, hobby shop, property storage and light equipment uses where doors and circulation are tightly planned.
Efficient footprint
360 square feet is useful without the site footprint, heating load or material cost of a much larger shop.
Side clearance
Two parked vehicles can consume much of the 18-foot width. Plan walking space before adding deep cabinets or equipment.
Door wall matters
The best layout depends heavily on whether the main overhead door is placed on the 18-foot end or the 20-foot sidewall.
18×20 Metal Building Layouts and Floor Plans
This conceptual floor plan shows one practical way to organize the footprint while preserving circulation, storage and a clear primary work or vehicle zone.
Primary bay
Keep the largest uninterrupted rectangle open for vehicles, equipment, material movement or the main workshop activity.
Storage wall
Concentrate cabinets and shelving on one side so circulation and the main operating zone remain predictable.
Door strategy
Confirm the real openings before fixing wall position, framing, overhead doors or large-equipment access.
18x20x14 Metal Building Cost
Kit pricing is only one part of a finished project. Use the kit number as a planning anchor, not a building quote.
$3,960-$6,840
Footprint-level planning reference for the metal building kit. Height, loads, openings, freight, erection, slab and location can change the actual quote.
$4.0K-$6.8K
Site specific
Variable
Scope specific
Optional
REALITY
CHECK
Could a 18x20x14 Metal Building Work as a Barndominium or Barndo?
This footprint is compact for a full-time barndominium once bedrooms, bathrooms, mechanical space, wall thickness and circulation are included. It can still make sense as a detached barndo shop, garage, hobby building or accessory structure. Any residential conversion needs residential code, egress, insulation, plumbing, electrical and occupancy planning. The eave height provides useful flexibility for combined living-and-shop concepts, subject to engineered openings and residential code requirements.
Is a 14-Foot Eave Height Enough?
Compare the current eave with adjacent metal building eave heights before you lock in doors, lifts, racking, storage or tall equipment.
Doors first
Specify the tallest vehicle or equipment and the required clear opening before treating the eave as sufficient.
Overhead clearance
Lifts, racks, mezzanines, lights and mechanical systems all compete for vertical space beneath the frame.
Height has cost
A 14 foot eave is a common shop upgrade. SteelBuildingKit.com height research models roughly a 6% to 9% kit-price step from a comparable 12 foot eave before load and opening differences.
What Makes This Exact Building Size Different?
The steel building footprint stays the same if you change only eave height, but usable volume, door options and equipment compatibility can change substantially.
Side-to-side planning
Tubular or cold-formed systems are common candidates. Width controls clear span, door layout and the amount of circulation left beside equipment.
Useful working depth
Length determines how easily parking, work cells, inventory, staging or support rooms can be separated without blocking the main path.
Vertical envelope
The eave creates about 5,040 cubic feet through the wall height before the roof volume is added.
18x20x14 Metal Building Dimensions
Two simple views make the footprint and eave relationship immediately understandable.
Concrete, Roof, Wall and Volume Calculations
Planning math is useful for comparison, but final structural and concrete requirements must follow engineered plans and local conditions.
360 sq ft
76 linear ft
5,040 cu ft
About 4.4 cu yd
Compare 18×20 Metal Building Sizes
Compare nearby metal building sizes to see how changes in footprint and eave height affect usable space, clearance, storage and typical applications.
360 sq ft
Less vertical envelope while floor area stays unchanged.
360 sq ft
The exact width, length and eave combination shown on this guide.
432 sq ft
Changes usable floor area while keeping a comparable eave height.
900 sq ft
Compare a nearby footprint before finalizing site use and circulation.
Common Buying Mistakes for a 18x20x14 Metal Building
Avoid these common planning mistakes before comparing kits, foundations, door packages and contractor quotes.
The quoted eave is not the same as the usable door opening or the clear ceiling under the frame. Size the tallest vehicle, rack or lift first, then verify the engineered opening and frame depth.
A floor can hold more vehicles than it can move independently. Doors, aisles, trailer swing, workbenches and wall storage decide whether the building functions well after it fills up.
Kit pricing normally excludes some combination of slab, freight, erection, doors, insulation, electrical work, site work and permits. Compare quote scopes line by line.
The geometric concrete math on this page is useful for scale, but the engineered foundation can add footings, grade beams, piers, thickened edges and reinforcement.
Before You Request a 18x20x14 Metal Building Quote
Have these decisions ready so quotes are easier to compare and less likely to hide major scope differences.
18x20x14 Metal Building FAQ
Quick answers to common questions about dimensions, capacity, eave height, barndo fit and concrete planning.
What does 18x20x14 mean for a metal building?
It describes a building approximately 18 feet wide, 20 feet long and 14 feet at the eave, creating a 360-square-foot nominal floor area.
How much floor area does a 18×20 metal building provide?
The nominal floor area is 360 square feet because 18 feet multiplied by 20 feet equals 360. Eave height changes the vertical envelope, not the slab area.
Is 14 feet tall enough for this metal building?
It depends on the use. Eave height is not the same as clear door or clear ceiling height, so tall vehicles, lifts, racks and equipment should be checked against the engineered opening and frame depth.
Can a 18×20 building be a barndominium or barndo?
Better as a barndo shop, garage or accessory space than a full barndominium. The eave height provides useful flexibility for combined living-and-shop concepts, subject to engineered openings and residential code requirements.
How much concrete is needed for a 18×20 slab?
A simple 4-inch slab is about 4.4 cubic yards before waste, thickened edges, footings, grade beams, piers or engineered foundation adjustments.
How These Metal Building Measurements and Cost Ranges Are Calculated
For a 18x20x14 metal building, the 18-foot width, 20-foot length and 14-foot eave create 360 square feet and about 5,040 cubic feet through the eave, a compact envelope where door placement and permanent storage depth can matter as much as raw floor area. Because the footprint is near-square, compare end-wall and sidewall door schemes; large openings can consume prime wall area needed for utilities, storage or support rooms. At a 14-foot eave, compare engineered clear openings and frame depth before committing to lifts, taller doors, stacked storage or future equipment. Ask suppliers to itemize foundation assumptions, freight, erection, insulation, framed openings and local design loads, because two 18x20x14 steel building quotes can share nominal dimensions while representing materially different finished scopes and total project costs.
Width x length
2 x width + 2 x length
Footprint x eave height
Area x slab thickness