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HomeCoastal House PlansModern 3-Bedroom Coastal Home with Elevator, In-Law Suite, and Balcony

Modern 3-Bedroom Coastal Home with Elevator, In-Law Suite, and Balcony

Plan #AP7146-A · 3,812 sq ft · 3 bd · 3 ba · 3.0 story · 3-car

Coastal House PlansContemporary And Modern House PlansNarrow House Plans
★★★★★Read 687+ verified reviews →
Estimated cost to build the home
$570k – $955kFree zip estimate ↓
Have questions about this plan? Book a free plan review with David →
David Park · Residential Plan Advisor · 30+ years
3,812
Sq Ft
3
Beds
3.5
Baths
3.0
Stories
3
Garage
11′
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
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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…
  • Working with a narrow lot under 50 ft wide—designed at 39 ft 6 in frontage to maximize vertical space
  • Need multi-generational or rental income potential (dedicated in-law suite with separate living quarters)
  • Want a private primary suite on an upper floor away from guest and in-law areas
  • Require accessibility between floors without stairs (elevator included on all three levels)
  • Seeking outdoor entertaining space (rear lanai with built-in outdoor kitchen and 1,325 sq ft balcony)
! May not be the best fit if you…
  • Need 4+ bedrooms—this plan offers 3 finished bedrooms plus a bonus room
  • Prefer a single-story layout—this is a three-story design with stairs between levels (elevator available)
  • Want a wide, shallow lot—this plan needs 90 ft 7 in of depth on a narrow frontage
  • Looking to minimize building height—at 48 ft 4 in tall, this plan is vertically pronounced

This plan tends to appeal to:

Narrow Lot BuildersMulti-Generational FamiliesVacation Home BuildersShort-Term Rental InvestorsCoastal & Beachfront Owners
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 — 3,812 sq ft · 35.00′W × 64.50′D

↓ Free Sample
floor plan

Choose Your Package

Not sure? Call us — we'll help
PDF Set
Build as-is or minor changes
$3,500
  • Complete working drawings (PDF)
  • Instant delivery to your email
  • Unlimited build license included
  • Copyright release — print as needed
  • AutoCAD DWG files not included
CAD Set
Significant modifications or custom design
$4,000
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed

About this plan

Vertical Living for Narrow Lots

This Modern Beach house plan maximizes 3,812 sq ft of living space across three stories, engineered specifically for narrow lots with just 39 ft 6 in of frontage. A coastal aesthetic combines with practical vertical design: the first floor features an 11-foot ceiling height that amplifies the open-concept great room, while the in-law suite provides a self-contained living zone for extended family or guests. An integrated elevator servicing all three levels ensures accessibility without compromising the tight footprint.

The upper two floors each provide 1,722 sq ft of secondary space, with the primary suite on the second level featuring a sitting area and direct access to a spacious 1,325 sq ft balcony. A split-bedroom configuration maximizes privacy, while a bonus room and wet bar create flexible zones for media or entertaining. The 3-car front-load garage integrates efficiently, and outdoor living is extended by a rear lanai with built-in outdoor kitchen.

  • 3 bedrooms, 3 full baths, 1 half bath across three floors
  • In-law suite on the first floor for multi-generational living
  • Primary suite on the upper level with sitting area and 1,325 sq ft balcony
  • Elevator serving all three levels
  • Engineered for narrow lots: 39 ft 6 in wide frontage
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)3,812 sq ft
1st Floor1,810 sq ft
2nd Floor1,722 sq ft
3rd Floor1,722 sq ft
Front Porch75 sq ft
Total Porch75 sq ft
Deck1,325 sq ft
Lanai383 sq ft
Balcony1,325 sq ft
Bedrooms3
Full Bathrooms3
Half Bathrooms1
Stories3.0
Width of House35′
Depth of House64′6″
Building Height48′4″
1st Floor11′
Garage3-car, front-load
Garage Area1,852 sq ft
FoundationSlab / Pier / Piling
Wall FramingCMU
Roof FramingTruss
Roof Pitch8:12

Key Features

3.0-story layout
3 bedrooms · 3 full baths
11-ft ceilings on the main level
3-car garage
35.00′ × 64.50′ 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 #AP7146-A
HOUSE · 3,812 sq ft · 3 bd / 3 ba / 3-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
$749k
Most common
Mid-range
$863k
Premium
$955k+
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

Can't find your answer? Call (888) 890-2353

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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