

Truoba 123



First floor 532 sq ft. Second floor 1,226 sq ft.
About Truoba 123
A tiny hip-roof house with an accessory dwelling unit (ADU) can be a great option for those looking to maximize their living space on a small lot. The house has an open floor plan to make the most of the limited square footage and incorporates built-in storage solutions to keep the space organized and clutter-free.
A well-designed layout includes an ADU on the first floor and a separate home unit with a main living area, a dining room, and a kitchen on the second floor. The main living area on the second floor allows for plenty of natural light, better views of the surrounding area, and privacy from outdoor distractions. On the second floor, you can also find two bedrooms that can be easily transformed into an additional home office or a hobby room. Having the ADU on the first floor can provide a rental space or can be used as a private retreat for guests or as a home office or studio.
What this plan is built from
Area
- House area
- 1,758 sq ft
- Garage area
- 560 sq ft
- 1st floor
- 532 sq ft
- 2nd floor
- 1,226 sq ft
Foundation
- Type
- Slab, Basement, Crawl Space, Pier
- Insulation
- 8"–10"
Dimensions
- Width × Depth
- 33' × 38'
- Height
- 29'
- Stories
- 2
Interior
- Ceiling height
- 9'
Walls
- Framing
- 2″x6″ stud wall
- Finish
- Vinyl and Brick
- Insulation
- 6"
- Possible finishes
- Wood, vinyl, stone, fiber cement
Roof
- Primary pitch
- 5/12
- Framing
- Rafters and trusses
- Insulation
- 12"
The complete construction drawing set
Every plan ships as a full drawing package available as PDF (for making copies) or editable CAD (.dwg) set. Below is what arrives with every order.
- Construction Notes
- Foundation Plan
- Plumbing Plan
- Floor Plan
- Roof Construction Plan
- Roof Plan
- Sections
- Elevations
- Construction Details
- Electrical Plan
- HVAC Plan
- Furniture Plan
- Door and Window Schedule
- General Specifications
- Reversed Plan +$150
- Plot Plan +$100 Some counties require a plot plan to obtain a building permit. The plot plan shows where the house will be located on the property so the builder knows where to pour foundations. Buyer must provide plot topography or boundary dimensions with stated setbacks.
Truoba's construction drawings must be reviewed by a local structural engineer because soil, snow, wind, and seismic load requirements vary by county. After review, Truoba updates the drawings for free and reissues the set, ready for your permit office.
Want changes? They're free until you approve.
If you like Truoba 123 but a few changes would make it perfect, the original designer can customize it. Add a bedroom, expand or narrow the footprint, reverse the floor plan, or even add a whole floor. No upfront payment, first draft in 48 hours.
No upfront payment
You only pay the final price for the whole plan once you approve the final house design.
First draft in 48 hours
Tell the designer what to add, remove, or change. They send back an updated floor plan within two days.
Transparent tier pricing
Three tiers based on scope. No surprise charges, no scope-creep billing.
Modification pricing
Minor changes
Reverse plan, minor room tweaks, exterior changes, garage adjustments, roof pitch
Medium changes
Redesign rooms, change roof type, expand house, significant exterior
Major changes
Redesign over 40% of plan, add significant sqft, add a floor
What will it cost to build this house plan?
Plan price is one number. Construction cost is the number that decides whether you build. The Cost-to-Build Report is built specifically for Truoba 123, customized to your building lot zip code, with current local material and labor rates.
This plan, your zip code
The estimator pulls construction-cost data for your specific lot location, factoring in local labor and material pricing.
Customize materials and labor
Real-time line-by-line adjustments. See how framing, roofing, and siding choices change the bottom line. Add or subtract for self-build labor and friend-of-the-family discounts.
Reviewed by a cost expert
Manually reviewed by StartBuild. Most reports arrive within a day. Conservative, accurate to within 10 percent on most builds.



