A barndominium with a breezeway puts a roofed, open-sided gap between two parts of the building — usually the house and the garage or shop. Every plan below has one. What none of the breezeway house plans you will find elsewhere tell you is how big that gap actually is, and the range is enormous: the smallest breezeway in this collection is 10′ x 10′, the largest is 720 square feet. One is a dash from the car in the rain. The other is an outdoor room you would furnish. Because that single number changes how you would live in the house more than anything else on the spec sheet, these barndominium plans with a breezeway are sorted by it.
One plan here is not a breezeway plan at all. It is a dogtrot, and the difference matters.
What A Breezeway Is — And Why A Dogtrot Is Not The Same Thing
These two words get used interchangeably across almost every site selling these plans, including listings that carry both words in the same sentence. They describe different buildings.
A breezeway connects a house to something that is not a house. The roof continues, the walls stop, and you walk from the mudroom to the garage without getting wet. The living space is all on one side.
A dogtrot splits the living space itself. Two enclosed sections sit either side of an open central pass-through, under one continuous roofline. The form comes from the pre-air-conditioning South, where that central corridor worked as a pressure drop that pulled air through both halves of the house on a still day. It is the reason the style is being built again — the ventilation is real, and so is the separation.
The practical consequence for a buyer: a dogtrot gives you two independent living areas; a breezeway gives you a covered walk to your truck. If you are housing a parent, an adult child, a renter or a short-term let, only one of those solves the problem. Thirteen of the fourteen plans below are breezeways. One is a dogtrot.
Dogtrot Barndominium Plans
BRZ-30045
The only true dogtrot in this collection. Two complete two-bedroom living units sits on either side of an open central 11-by-30-foot breezeway, under one continuous roof, with what the designer describes as complete acoustic separation between the two homes.
Shared structure, shared foundation, shared roof, but no shared walls between bedrooms.
This is the only plan in the collection built as a true dogtrot rather than a house-to-garage connector, and at 330 square feet the central pass-through is larger than the breezeway on all but one of the plans below.
Breezeway House Plans By Breezeway Size
Compact Breezeways — 100 To 200 Square Feet
A covered link sized for passage rather than for sitting. Cheapest to build, shortest run of roof, and it keeps the garage close enough that the walk is genuinely short.
BRZ-30039
The smallest breezeway in this collection, and the cheapest to build: ten feet by ten, just enough roof to get from the living quarters to a 24′ x 29′ two-car garage without getting wet. If the breezeway is a practical necessity rather than a space you intend to use, this is the efficient version of it. Heated square footage, overall dimensions and story count are not listed for this plan, so confirm those with the designer before you set a budget. From $1,349.99.
BP-2001-R Robert
The largest garage in the collection at 1,852 square feet, paired with one of the smallest breezeways at 120 — which tells you exactly where the budget went. That is not a criticism: if the point of the build is workspace, spending on bays rather than on covered walkway is the right trade. At 129 feet wide and 85 deep this is a big footprint that needs real acreage, and it delivers 3,194 heated square feet across four bedrooms on a single level. From $849.99.
BRZ-30050
A 14′ x 13′ covered breezeway running from the laundry and mudroom entry to a detached 22′ x 29′ garage. The sequence is the part worth noticing: you come in from the car through the room designed to absorb boots, coats and wet dogs rather than straight into the kitchen. Four bedrooms and three baths on one level. Heated square footage and overall dimensions are not listed for this plan — confirm them with the designer. From $1,349.99.
LP-2804-C Caitlyn
The most compact of the four-bedroom plans here, and at 48 feet deep the second-narrowest front to back — worth a look if the lot is tight in that direction. A 160 square foot covered breezeway connects the house to a 1,200 square foot garage. Fitting four bedrooms and three full baths into 1,900 heated square feet means the rooms are efficiently sized rather than generous, which is the trade you make for the footprint. From $849.99.
Mid-Size Breezeways — 300 To 500 Square Feet
Wide enough to stand around in. This is the range where the breezeway stops being a corridor and starts being usable covered space — a place for a grill, a bench, firewood, or bikes.
BRZ-30046 Gavin
A 300 square foot breezeway between the laundry and mudroom and a 750 square foot garage — wide enough that it stops being a corridor and starts being usable covered space for a grill, firewood or bikes. The mudroom placement is the detail worth noticing: you arrive into the room built to absorb boots and coats rather than into the kitchen. At 105 feet wide by 76 deep it needs a broad lot, and the four bedrooms and three full baths sit on a single level. From $849.99.
PL-71007-Y Young
At 40 feet deep on a 98 foot spread this is the narrowest plan here front to back, and the one that will sit most comfortably on a long, shallow lot where a squarer footprint simply will not fit. The 320 square foot covered breezeway is a fifth of the heated square footage — an unusually generous ratio — and it links the house to a 1,200 square foot garage. Two bedrooms, so this is a couple’s plan or a weekend place rather than a family house. From $849.99.
BRZ-30043 Allison
The largest plan in the collection by both bedroom count and heated square footage, and one of only three that go to two stories. The 500 square foot breezeway connecting the 1,000 square foot garage to the house is genuinely large — half the size of the garage itself, and big enough to function as covered outdoor living rather than circulation. Five bedrooms and three full baths across two floors on a 90′ x 70′ footprint. From $1,349.99.
A Breezeway You Can Furnish — 720 Square Feet
PL-2805 Leonardo
A 720 square foot breezeway — only a quarter smaller than the 900 square foot three-car garage it connects to, and larger than many primary suites. At that size it stops being circulation and becomes the outdoor room the house is arranged around: covered, shaded, open on two sides, usable in weather that would shut down an uncovered patio.
Worth pricing carefully. Roofed unconditioned space costs less per square foot than heated space, with no insulation, HVAC, drywall or finished ceiling in it, but it still needs foundation, structure and roof. A 720 square foot breezeway is a real line on the budget, and it is the single biggest reason to price this plan against a smaller-breezeway alternative before committing. From $849.99.
BP-2001 Brashear
A covered breezeway links the main house to a 1,230 square foot detached garage, on a long, low single-story footprint of 109′ x 53′. Three bedrooms and 2.1 baths in 2,567 heated square feet gives noticeably more room per bedroom than the four- and five-bedroom plans on this page. From $849.99.
LP-71009 Bell
At 42 feet wide this is by far the narrowest plan in the collection — the only one that would fit a genuinely tight lot — and it goes to two stories to recover the space it cannot get sideways. Here the patio does double duty as the breezeway rather than a dedicated covered link, so if a distinct sheltered garage connection matters to you, look at one of the plans above instead. Four bedrooms and three full baths in 2,470 heated square feet. From $1,349.99.
AP-20004 Hoffman
Arrivals from the 900 square foot garage pass through a covered walkway into a mudroom and then straight into a large laundry room — a sequence built around actually coming home dirty. The breezeway is grouped with the covered walkways and deep porches rather than measured on its own. Two bedrooms in 2,644 heated square feet is the most generous room-to-bedroom ratio on this page by a wide margin. From $1,049.99.
PL-64002 Gillian
A semi-open breezeway connects a 1,620 square foot three-car garage to the main living area — the largest garage on this page after Robert’s, and a sheltered transition that still lets you feel the weather. The breezeway is included in a 581 square foot porch total rather than measured on its own. Three bedrooms across two stories in 2,852 heated square feet. From $1,349.99.
CDD-4101 Haven
The most serious workspace on this page: a 30′ x 40′ shop, 1,200 square feet, with four overhead doors. If the building is really about what you do in the shop, this is the plan to start from. The breezeway is included in roughly 1,770 square feet of combined porch, patio and breezeway rather than measured separately. A true square footprint at 60′ x 60′, which is unusual here and useful on a lot that will not take a long, low building. From $849.99.
Choosing Between These Plans
If you need two independent living areas — a parent, an adult child, a tenant — BRZ-30045 is the only plan here that delivers it. Nothing else on this page separates the living space.
If the lot is narrow front to back, PL-71007-Y Young is 40 feet deep and LP-2804-C Caitlyn is 48. If the lot is narrow side to side, LP-71009 Bell at 42 feet wide is the only realistic option, and it goes to two stories to get its space.
If the shop matters more than the house, CDD-4101 Haven’s 30′ x 40′ with four overhead doors is the most serious workspace in the collection, and BP-2001-R Robert has the largest total garage at 1,852 square feet.
If you want the breezeway itself to be usable space, PL-2805 Leonardo at 720 square feet is the plan built around that idea. BRZ-30043 Allison at 500 square feet is the next closest.
If you want the shortest, cheapest covered link, BRZ-30039’s 10′ x 10′ does the job with the least roof.
For the largest household, BRZ-30043 Allison at five bedrooms and 3,288 square feet is the biggest plan here.
What A Barndominium With A Breezeway Costs To Build
Finished barndominium builds generally run $65 to $160 per square foot, and where a specific project lands inside that range depends far more on your site, your local labor market and your finish level than on which plan you choose. A kit shell is a different path: roughly $20 to $35 per square foot for the shell package, plus $10 to $15 per square foot to assemble it, before any interior work.
Two things specific to breezeways are worth building into your number.
The breezeway is not free, and it is not full price either. It needs foundation, structure and roof, but no insulation, HVAC, drywall or finished ceiling. That is why it sits in the unheated column on every plan above. Treat it as real cost at a lower rate than heated space, and get it priced explicitly rather than assuming it disappears into the porch allowance.
A detached garage across a breezeway usually costs more than an attached one of the same size — more exterior wall, a separate roof structure, and a longer run for any utilities you take out there. The trade is a genuinely quieter, cleaner house, which is much of the reason to build this way at all.
These are planning figures for sizing a budget, not quotes. Get local bids before you commit to anything.
Frequently Asked Questions
What Is The Difference Between A Breezeway And A Dogtrot?
A breezeway is a roofed, open-sided passage connecting a house to a garage or shop — the living space stays on one side. A dogtrot splits the living space itself, placing two enclosed sections either side of an open central pass-through under one roof. Most listings use the two words interchangeably, but only a dogtrot gives you two genuinely separate living areas.
Do Barndominiums With A Breezeway Cost More To Build?
Usually a little, yes. A breezeway adds foundation, structure and roof without adding heated space, and detaching the garage across it means more exterior wall and a separate roof structure than an attached garage of the same size. The offset is a quieter house with garage noise, fumes and dust kept outside the conditioned envelope.
How Big Should A Breezeway Be?
It depends entirely on what you want from it. Around 100 to 200 square feet is a covered walk. Around 300 to 500 gives you space to stand, store firewood or park bikes. Above 700 square feet it becomes an outdoor room you would furnish and use. The plans on this page span that whole range, from 10′ x 10′ up to 720 square feet.
Can A Breezeway Be Enclosed Later?
Often, but it is a design decision to make before you build rather than after. Enclosing a breezeway turns unheated square footage into conditioned space, which changes the foundation, insulation, HVAC sizing and sometimes the structure. If you think you may want to close it in eventually, raise it with the designer at the modification stage.
Does A Dogtrot Layout Actually Improve Airflow?
That is the original purpose of the form. The central open corridor works as a pressure drop, drawing air through both halves of the building even on a still day, which is why the style developed in the pre-air-conditioning South. In a modern insulated build it will not replace air conditioning, but it does make the shaded central space markedly more comfortable than an open patio.
Which Of These Plans Works For Multi-Generational Living?
BRZ-30045 is the only one on this page designed for it, with two complete two-bedroom units either side of an 11′ x 30′ central breezeway and acoustic separation between them. The remaining plans have a single living area connected to a garage.
