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HomeAccessory Dwelling Unit Adu House PlansBiscayne Garage Apartment Plan

Biscayne Garage Apartment Plan

Plan #A6538-A · 480 sq ft · 1 bd · 1 ba · 2.0 story · 2-car

Accessory Dwelling Unit Adu House PlansTwo Story
★★★★★Read 687+ verified reviews →
Estimated cost to build the home
$70k – $120kFree zip estimate ↓
Have questions about this plan? Book a free plan review with David →
David Park · Residential Plan Advisor · 30+ years
480
Sq Ft
1
Beds
1
Baths
2.0
Stories
2
Garage
8′
Ceilings
“We kept coming back to this plan — it just felt right for our family. The flow between the kitchen and living room works.”Verified buyer · Trustpilot
40+
Years in Business
3,000+
Plans in Catalog
10%
Beat Any Competitor Price
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In-House Design Team
Quick self-check · 30 seconds

Is this the right plan for you?

Most regret comes from buying a plan that doesn't fit your life. Skim this before you decide.

Great fit if you…
  • Want rental income or guest accommodations on a small lot (480 sq ft apartment above 2-car garage)
  • Working with a narrow lot under 40 feet — footprint is just 24 ft x 32 ft
  • Need a 2-car garage with living space above (645 sq ft garage with 480 sq ft apartment)
  • Prefer vaulted ceilings in a compact space (8 ft 1 in volume ceilings in 480 sq ft)
  • Want to preserve yard space — stacked design minimizes ground footprint
! May not be the best fit if you…
  • Need multiple bedrooms — this plan has only 1 bedroom
  • Require a large living area — 480 sq ft is below 800 sq ft total
  • Want a single-story layout — this is a two-story garage apartment
  • Need more than 1 bathroom — this plan has 1 bathroom only
  • Prefer a wider lot — the design requires only 24 feet of width but is compact overall

This plan tends to appeal to:

Accessory Dwelling Unit BuildersRental Property InvestorsNarrow-Lot OwnersMulti-Generational FamiliesVacation Home Builders
Think this is the one? Choose your package above and check out when you're ready.Yes — this plan fits me →

Floor Plans

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Main Level — 480 sq ft · 24.00′W × 32.00′D

↓ Free Sample
floor plan
floor plan

Choose Your Package

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PDF Set
Build as-is or minor changes
$725
  • Complete working drawings (PDF)
  • Instant delivery to your email
  • Unlimited build license included
  • Copyright release — print as needed
  • AutoCAD DWG files not included
5 Prints
$975
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed
5 Prints + PDF
$1,075
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed
CAD + PDF Bundle
$1,475
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed
CAD + PDF Multi-Build
$2,125
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed

About this plan

Occupying a compact 24 ft by 32 ft footprint, the Biscayne Garage Apartment Plan provides 480 sq ft of heated living space positioned above a 645 sq ft two-car garage. This design is engineered for narrow lots and accessory dwelling unit (ADU) applications, utilizing a 12:12 roof pitch that maximizes vertical roof volume while maintaining a total building height of 23 ft 3 in.

The upper-level floor plan is organized around an open-concept living area, where the 8 ft 1 in ceilings create a sense of scale within the 480 sq ft of climate-controlled space. This level contains a primary suite equipped with a full bathroom and a walk-in closet, alongside a wall pantry for efficient storage. A dedicated laundry area is situated on the main level to streamline household management without compromising the living quarters above.

Construction specifications for the Biscayne Garage Apartment Plan include stick-framed wall construction and a robust roof profile designed to handle residential loads. The garage level integrates a 64 sq ft utility and workshop zone, providing additional storage or hobby space that remains distinct from the vehicle parking area. The 8 ft ceiling height on the ground level ensures sufficient clearance for standard automotive storage.

This structure serves as a versatile solution for property owners seeking to incorporate rental income potential or private guest accommodations into a small site. By stacking the living area above the 2-car garage, the design preserves yard space and minimizes the overall site impact. The 12:12 roof geometry provides a traditional aesthetic that complements various architectural styles while ensuring long-term structural durability.

Key Features: 480 sq ft living area, 2-car garage, 1 bedroom, 1 bathroom, vaulted ceiling volume, walk-in closet, 12:12 roof pitch, 24 ft x 32 ft footprint, dedicated workshop area, stick-framed construction, accessory dwelling unit.

Review plan layouts, CAD packages, and customization options for this home.

What's included in this plan
  • Exterior elevations (all sides)
  • Detailed floor plan(s) with dimensions
  • Foundation plan
  • Roof plan
  • Schematic electrical layout
  • Building cross-sections
  • General notes & specifications
Not included (handled locally)
  • Architectural / engineering stamps
  • Site & grading plan
  • Structural / framing calculations
  • Plumbing & HVAC layouts
  • Energy-compliance documents
  • Material take-off list
These are typically prepared by your local builder or engineer to meet your jurisdiction's requirements.

Complete Plan Specifications

Total Living (heated)480 sq ft
2nd Floor480 sq ft
Bedrooms1
Full Bathrooms1
Stories2.0
Width of House24′
Depth of House32′
Building Height23′3″
1st Floor8′
Garage2-car, side-load
Garage Area645 sq ft
FoundationSlab
Wall Framing2x4
Roof FramingStick
Roof Pitch12:12

Key Features

2.0-story layout
1 bedrooms · 1 full baths
8-ft ceilings on the main level
2-car garage
24.00′ × 32.00′ footprint
Unlimited build license included
Copyright release — print as many copies as you need
Builder-friendly construction drawings

Modify This Plan

Free quote in 1–3 business days · In-house design team
In-house design team · Family-owned since 1983

Need a 4th bedroom, a different foundation, or 8 more feet of width?

Two quick steps. We'll reply with a fixed-price quote — no obligation, and no charge until you approve.

1–3 days
To send your quote
~2 wks
Typical revision time
Free
Until you approve
Direct
To the architect
1
Your contact
2
What to change
PLAN
Plan #A6538-A
GARAGE · 480 sq ft · 1 bd / 1 ba / 2-car

First — where should we send your quote?

We only ask for what we need to get back to you. No address, no marketing.

Free quote — no charge until you approve·Direct to our in-house architect·40+ years modifying plans

What will this cost to build?

Most buyers are off by 20–30% before checking this.
Budget
$263k
Most common
Mid-range
$304k
Premium
$342k+
Modeled on Wichita, KS — our US price-baseline city. Use the form below to generate an exact estimate for your own location.
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Still deciding?

Book a free 15-min plan review with David Park.

David has 30+ years in residential design and construction documents. He'll walk through this plan with you — foundation options for your lot, modification possibilities, and exactly what's in the construction documents you'd receive. No pitch. No fee.


Reviews across all our plans — see plan-specific reviews on Trustpilot →

★★★★★

JoAnne and the entire staff was extremely helpful and patient with us while we decided between 2 homes. Outstanding curb appeal and a great layout perfect for us.

R
Rita Long · Milwaukee, WI
Plan: Cranberry Gardens
Verified buyer · Trustpilot
★★★★★

We've had an amazing experience with our new home. The customer service we received during our modifications was exceptional — they walked us through every change.

S
Sandra Hawkins · Montgomery, AL
Plan: Dunrobin Castle
Verified buyer · Trustpilot
★★★★★

We compared three plan sources and Archival's pricing + free design call won us over. Our builder said the construction docs were the cleanest he'd seen.

M
Mark Chen · Boise, ID
Plan: Pepperwood Place
Verified buyer · Trustpilot

→ Read all 687+ reviews on Trustpilot


Frequently Asked Questions

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For most buyers, the PDF Set is the right choice — instant delivery, unlimited build license, and easy to share with your builder. If you plan significant modifications or are building in CA, OR, WA, or NV, go with CAD + PDF so your designer can edit the source files. Still not sure? Call (888) 890-2353 and a real person will help you choose.

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Starting at
$725
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