S-400: Studio 400 SF ADU

400 sq ft
20' x 20'
Studio Space
Full Kitchen
1 Full Bathroom
Laundry
1 Walk-in-сloset
can be 100% customizable to your needs

All Features and Highlights Included

model overview
400 sq ft
20' x 20'
Studio Space
Full Kitchen
1 Full Bathroom
Laundry
1 Walk-in-сloset
FLOOR plan S-400 / 20' x 20'
S-400: Studio 400 SF ADUFloor Plan
100% Customizable
  • Adjust ADU size & shape
  • Choose any exterior & interior finishes
  • Set room configurations
  • Customize kitchen & bathroom
  • Include accessibility features / ADA compliance
  • Add, remove & move windows & doors
  • Incorporate any storage solutions
  • Integrate patio, deck, garage or loft
  • Choose your own customization
  • And more customization options to fit your unique needs!
Best Suited For
  • Family Comfort
  • Senior Living
  • Prime Rental
  • Solo Rental
  • Short-Term Rental
  • Game Space
  • Craft or Hobby Room
  • Space for Kids
FLOOR plan S-400 / 20' x 20'
S-400: Studio 400 SF ADUFloor Plan
Full Kitchen
  • Functional solid wood cabinetry
  • Premium materials throughout
  • Soft-closing cabinets and drawers
  • Durable stone countertops
  • Optimized kitchen triangle for efficiency
Complete Bathroom
  • Full-size shower/tub combination
  • Waterproof, easy-to-clean materials
  • Low water consumption fixtures
  • Effective moisture control
  • Functional vanity with storage
Efficient Appliances
  • Energy-efficient heat pump
  • Dishwasher, 24"
  • Slide-in range, 30"
  • Refrigerator, 30"
  • Microwave hood, 30"
Functional Amenities
  • Spacious storage solutions
  • Energy-saving LED lighting
  • Dedicated laundry area
  • Adjustable climate control
  • Zero-threshold interior for accessibility
Step Inside a Beautiful Finished ADU

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ADU Models and Designs

Search dozens of build-ready ADU models, all fully customizable
ADU sq ft
Bedrooms
Bathrooms
Closets
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S-250
259 sq ft
18'6" x 14'
Studio Space
Full Kitchen
S-300
301 sq ft
21'6" x 14'
Studio Space
Full Kitchen
S-380
380 sq ft
20' x 20'
Studio Space
Full Kitchen
S-400
400 sq ft
20' x 20'
Studio Space
Full Kitchen
S-470
473 sq ft
21' x 22'6"
Studio Space
Full Kitchen
M-300
298 sq ft
13'6" x 27'6"
1 Bedroom
Full Kitchen
M-330
330 sq ft
20' x 16'6"
1 Bedroom
Full Kitchen
M-370
370 sq ft
19' x 19'6"
1 Bedroom
Full Kitchen
M-400
400 sq ft
25' x 16'
1 Bedroom
Full Kitchen
M-500
500 sq ft
25' x 20'
1 Bedroom
Full Kitchen
M-520
520 sq ft
20' x 26'
1 Bedroom
Full Kitchen
M-550
550 sq ft
26' x 23'6"
1 Bedroom
Full Kitchen
M-600
600 sq ft
25' x 24'
1 Bedroom
Full Kitchen
M-800
799 sq ft
42' x 25'
1 Bedroom
Full Kitchen
L-465
459 sq ft
25'6" x 18'
2 Bedrooms
Full Kitchen
L-545
543 sq ft
26' x 23'
2 Bedrooms
Full Kitchen
L-580-2
580 sq ft
11'6" x 25'
2 Bedrooms
Full Kitchen
L-650B
646 sq ft
27'6" x 27'
2 Bedrooms
Full Kitchen
L-650A
650 sq ft
24'6" x 26'6"
2 Bedrooms
Full Kitchen
L-690
690 sq ft
20' x 34'6"
2 Bedrooms
Full Kitchen
L-749B
749 sq ft
21'6" x 36'6"
2 Bedrooms
Full Kitchen
L-749A
753 sq ft
25' x 35'
2 Bedrooms
Full Kitchen
L-760
757 sq ft
28' x 27'
2 Bedrooms
Full Kitchen
L-800-2
800 sq ft
22' x 18'6"
2 Bedrooms
Full Kitchen
L-900
896 sq ft
32' x 28'
2 Bedrooms
Full Kitchen
L-920
913 sq ft
41'6" x 22'
2 Bedrooms
Full Kitchen
L-1080
1080 sq ft
45' x 24'
2 Bedroom
Full Kitchen
XL-749
743 sq ft
31' x 28'6"
3 Bedrooms
Full Kitchen
XL-1100
1100 sq ft
40' X 25'
3 Bedrooms
Full Kitchen
XL-1200
1200 sq ft
40' x 30'
3 Bedrooms
Full Kitchen

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      400 sq. ft. ADU Floor Plans

      Have you considered an autonomous secondary unit in your backyard? If so, A+ Construction & Remodeling gladly introduces a meticulously designed 400 square feet ADU floor plan. The well-designed layout provides clear and efficient organization of essential living areas, which makes it an ideal option for retired parents, teenagers seeking independence, or young families who need a space of their own.

      Ready to learn more about our stylish studio model? Let’s delve into its specific features and unique advantages!

      400 sq. ft. ADU Project Benefits

      The 400 square feet studio ADU by A+ offers an efficient layout, including a spacious combined zone with the living room and dining area transitioning into the corner space dedicated to the bedroom. The open-concept floor plan serves the purpose of removing barriers between diverse zones to create a cohesive and airy vibe.

      In addition, this small ADU unit boasts the following positive features:

      1. Rental property. Many homeowners opt to build an ADU to create a source of passive income. If you rent out a small house on your land, you might get some extra money to compensate for monthly expenses, which is always nice.
      2. Reasonable pricing. An ADU is a good investment in two aspects. Firstly, its construction cost is more affordable than that of a traditional house. Secondly, if you pay all necessary costs now, you receive an opportunity to resell your property for a greater price in the future.
      3. Accommodate relatives and guests. If you want to foster communication with your family or expand your social circle, adding a new ADU may be a good idea. Also, you can just rest in the backyard cottage whenever it’s empty.
      4. No designer needed. By choosing standard layouts, you avoid a costly and lengthy process of engineering and designing an ADU from scratch. Designers from A+ have already taken care of the project.

      If you want to find all the mentioned features in your accessory dwelling unit, the 400 sq. ft. ADU project is the best choice for you. Get in touch with A+ Construction & Remodeling online to discuss and create an ADU project that fits your vision!

      ADU Floor Model of 400 sq. ft. Characteristics

      Understanding the balance between functionality and comfort within a compact footprint of 400 sq.ft. is what our ADU floor plan can reflect. Creating a clever layout where all the essential living areas are well-organized and work with each other, leaving sufficient empty areas for movement, makes it ideal for a self-contained apartment, a holiday home, or a sustainable rental building.

      A+ Construction & Remodeling in Sacramento, California, offers a studio consisting of a bedroom area, a cozy living area, and a dining zone, as well as a full kitchen and full bathroom. It also features a laundry space as well as practical storage solutions like a walk-in closet adjoining the bathroom, which further enhances the quality of life in this cozy dwelling.

      Let’s go over the details our 400 square feet ADU project incorporates:

      • Availability of ample living space created by shared open living/dining zone and the corner arrangement of the furniture;
      • Space optimization is achieved by clever room organization to the point of perfect space efficiency where every inch serves its purpose;
      • Good lighting and a bright atmosphere thanks to the sufficient amount of windows for natural light;
      • Top-quality materials used for furniture and interior and exterior finishes.
      • All kitchen and bathroom appliances and energy-efficient features (fridge, sink, toilet, and so on);
      • Stylish design solutions emphasize a blend of modern simplicity and cozy decorative elements.

      Sit at the cozy table for two with a cup of coffee and watch TV on our cushy-seating sofa a few steps from the dedicated bedroom zone! If you seek to maximize habitable areas and simultaneously save your yard space, ADU floor plans by A+ offer a great boost to your property. Reach out now and take advantage of our free consultation and speedy construction process!

      Frequently Asked Questions — FAQ

      Is a 400 square feet ADU subject to high impact fees?

      Compared to larger ADUs (more than 750 sq. ft.), 400 sq. ft. units are subject to lower impact fees. However, it all depends on the local regulations and policies of the specific jurisdiction. For instance, coastal zones may have different requirements.

      What is the right location for an ADU?

      To establish the right location for the building, it’s vital to stay up to date with city laws and regulations. Typically, you can build an ADU 4 feet from the property line (counted from the walls and the seat of the house). These are usual setback requirements, restricting the width and length of the ADU.

      Can I install clerestory windows near the roof or add a loft zone to my ADU floor plan?

      If you opt for a bigger investment and order a customized ADU, you can choose everything from the materials (tile, board, siding, etc.) to decor and interior details and the location of the main entrance. Keep in mind that the cost will be higher, but the level of detailing will be greater.

      Does an attached ADU require site work?

      Yes, it may require site work if the existing structure needs adjustments that are necessary for the particular ADU. It may involve manipulations with the foundation, utility, or drainage considerations.

      Energy Efficiency and Sustainability
      Mold-Free Interior
      Waterproof
      Interior Surfaces
      33%
      Water Consumption Cut
      40%
      More Effective Insulation
      100%
      Resistant to Pests, Mold & Rot
      20%
      Lower Bills More Efficient HVAC
      60%
      Greater Energy Efficiency
      80%
      More Cost-Effective Lighting
      Toxic-Free Materials
      50%
      Less Noise With Solid Materials
      4xFaster
      Preparation Process
      0
      Supply Chain Disruptions
      Lifetime Warranty
      on Select Materials