These 20’ x 36’ house plans prove that great design doesn’t need a lot of square footage to shine. With open layouts, efficient flow, and a focus on modern essentials, each plan turns a compact footprint into something both functional and refined.
Whether you’re planning an ADU (accessory dwelling unit), a garage apartment, or a tiny home, these five designs show just how functional a modest footprint can be.
Discover our collection of small house plans here.
Curious what the pros think? We asked architect Rick Thompson of Thompson Plans (and one of our fabulous designers) to weigh in – explore his insights below:
What makes a 20' x 36' footprint appealing from a design perspective?
A 20’ wide plan is most often needed just to fit a narrow lot, or keep the size in the 1,000 to 1,200 sq. ft .range. It can be an awkward width to work with. In a single-story plan and a 2-story plan, 22’ or 24’ works much better. Typically, in a 2-story plan, you’d have 2 bedrooms side by side, and that extra foot in each room really helps.
In a single-story plan, 26’ is much better for the room sizes.
The depth would only be helpful to make the plan larger, if needed. I’m not sure if that includes the porch or not.
When working with a 20’ x 36’ house plan, what layout strategies do you rely on to make the space feel larger and more functional?
An open floor plan would be the highest priority. Next would be ceiling height, but in a small plan, which 20’ plans typically are, most developers want 8’ to save money.
What are the most common mistakes homeowners make when choosing or customizing a small home plan?
I can’t say I have noticed a common difficulty here. Often, it’s wanting to make the plan larger, which is not a mistake as such. I can often find a plan similar already larger to refer them to.
Is 20' x 36' a common footprint for an ADU?
Not really. My ADU plans that are single story, or have one bedroom on the first floor, are either much deeper or wider. You’d most likely end up with a 1-bedroom plan to fit that width and depth.
Are there any current design trends or features that work particularly well in 20' x 36' house plans?
Make them wider. Floor and roof framing is pretty much the same for a 20’ wide plan as a 22’, 24,’ or wider plan. Same sizing, just longer.
If you could give homeowners one non-negotiable piece of advice before they commit to a 20' x 36' plan, what would it be?
The stairs can’t be moved. That’s complicated and that one change impacts everything. That can make raising the ceiling heights on the first floor not possible, but not with every plan.
Get inspired with these 20' x 36' house plans!
Two-Story Craftsman Plan
Two-Story Craftsman Plan - Front Exterior
Two-Story Craftsman Plan - Main Level
Two-Story Craftsman Plan - Upper Level
Making great use of space, this modest Craftsman plan lives large with a clever layout. A covered front porch greets you and offers plenty of room to enjoy the outdoors. Inside, the island kitchen opens to the living room.
Note the dining nook. Three bedrooms round out the second level (including the primary suite).
Sleek Modern Design
Sleek Modern Design - Front Exterior
Sleek Modern Design - Main Level
Sleek Modern Design - Upper Level
Sleek lines define the exterior of this modern two-story design. Inside, the vibe is relaxed, with an open-concept layout that seamlessly connects the U-shaped kitchen, the dining area, and the living room. A flexible bedroom could be used as a home office or a creative space.
Upstairs, you’ll find two additional bedrooms (including the private primary suite), each with a private deck for easy outdoor living.
Tiny Bungalow Plan
Tiny Bungalow Plan - Front Exterior
Tiny Bungalow Plan - Main Level
Simple and compact, this tiny bungalow plan offers a four-corner footprint and a thoughtful layout. Clean lines and a gable roof deliver cute curb appeal. Inside, the layout feels breezy and bright with the L-shaped kitchen opening to the kitchen/dining area.
A bedroom (with a walk-in closet) and a full bath rest at the back of the plan. The versatile den is a welcome detail. Unwind on the front porch.
Three-Bed European Plan
Three-Bed European Plan - Front Exterior
Three-Bed European Plan - Main Level
Three-Bed European Plan - Upper Level
Ideal for a small lot, this two-story 20’ x 36’ house plan turns heads with a European exterior. The living room and the U-shaped kitchen flow into one another with ease. A closet in the entry keeps coats organized.
Upstairs, three bedrooms share a full hall bath.
Country Pool House Plan
Country Pool House Plan - Front Exterior
Country Pool House Plan - Main Level
This pool house plan delivers effortless farmhouse charm with board-and-batten siding, a classic gable roof, and the warm glow of barn lights. The covered lounge area, centered around a generous fireplace, invites you to unwind. A cathedral ceiling draws the eye up.
Check out the long counter with a sink. On the right side of the plan, a half bath features a built-in bench with hooks. A changing room resides nearby.
