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HomeContemporary And Modern House PlansFlexible 4-Bedroom Home with ADU, Daylight Basement, and Grand Room

Flexible 4-Bedroom Home with ADU, Daylight Basement, and Grand Room

Plan #AC6435-A · 4,260 sq ft · 4 bd · 3 ba · 2.0 story · 2-car

Contemporary And Modern House PlansTwo Story
★★★★★Read 687+ verified reviews →
Estimated cost to build the home
$640k – $1065kFree zip estimate ↓
Have questions about this plan? Book a free plan review with David →
David Park · Residential Plan Advisor · 30+ years
4,260
Sq Ft
4
Beds
3.5
Baths
2.0
Stories
2
Garage
9′
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
Expert
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…
  • Plan for multi-generational living with an in-law suite and separate entry (1,208 sq ft daylight basement ADU-style suite)
  • Want a home office that stays separate from main living areas (dedicated den on main floor)
  • Need a game room or media space (basement open area complements game room function)
  • Want to protect curb appeal by hiding the garage (drive-under 2-car garage integrates into lower level)
  • Appreciate vertical space and natural light despite having a three-level design (two-story grand room with 9-foot ceilings)
! May not be the best fit if you…
  • Require a single-level home — this is a three-level design with stairs connecting all levels
  • Want everything on the main floor — bedrooms are upstairs and the ADU is in the basement
  • Have a shallow lot under 50 feet deep — this plan requires 56 feet of depth
  • Need a narrow footprint to control costs (4,260 total sq ft across three functional levels is substantial)
  • Prefer a traditional basement over daylight slab — this design uses daylight/slab foundation

This plan tends to appeal to:

Multi-Generational FamiliesAging-in-Place BuyersWork-From-Home ProfessionalsBuyers Seeking ADU PotentialForever Home BuildersEmpty Nesters with Family Visits
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 — 4,260 sq ft · 40.00′W × 56.00′D

↓ Free Sample
floor plan

Choose Your Package

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PDF Set
Build as-is or minor changes
$2,130
  • 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
$2,430
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed
5 Prints + PDF
$2,480
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed
CAD + PDF Bundle
$4,047
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed

About this plan

Multi-Level Design with ADU and Daylight Basement

This 4,260 square foot contemporary home spans three levels and offers exceptional flexibility with an in-law suite on the daylight basement level, perfect for multi-generational living or guest accommodation. The main floor encompasses 1,621 square feet anchored by a two-story grand room with 9-foot ceilings that flood the home with natural light. A large kitchen island, walk-in pantry, mudroom, and den create an efficient daily hub with a quiet space for a home office.

The second floor occupies 1,431 square feet of private quarters, featuring a primary suite with walk-in closet, secondary bedrooms, and a centralized laundry room. The daylight basement provides 1,208 square feet of self-contained living with the ADU-style suite, full bathroom, and open game room area. Direct exterior access and 8-foot ceilings make this level feel connected to the outdoors rather than isolated underground.

A drive-under 2-car garage preserves the front elevation while providing 511 square feet of protected storage. Built on a daylight slab with 2x6 exterior framing and stick roof assembly, the home reaches 35 feet in height. Outdoor living is supported by a 427 square foot deck and 45 square foot front porch. The design requires a lot 40 feet wide by 56 feet deep.

  • In-law suite with full bathroom on daylight basement level
  • Two-story grand room with 9-foot ceilings
  • Drive-under garage preserves the front elevation
  • Home office/den for flexible use
  • Walk-in pantry and kitchen island
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)4,260 sq ft
1st Floor1,621 sq ft
2nd Floor1,431 sq ft
Basement (Finished)1,208 sq ft
Total Porch45 sq ft
Deck427 sq ft
Bedrooms4
Full Bathrooms3
Half Bathrooms1
Stories2.0
Width of House40′
Depth of House56′
Building Height35′
1st Floor9′
2nd Floor9′
Basement8′
Garage2-car, front-load
Garage Area511 sq ft
FoundationDaylight Basement / Slab
Wall Framing2x6
Roof FramingStick
Roof Pitch2:12

Key Features

2.0-story layout
4 bedrooms · 3 full baths
9-ft ceilings on the main level
2-car garage
40.00′ × 56.00′ 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 #AC6435-A
HOUSE · 4,260 sq ft · 4 bd / 3 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
$580k
Most common
Mid-range
$641k
Premium
$729k+
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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