Best Price Guarantee— we beat any competitor by 10%·Family-owned since 1983·(888) 890-2353
ARCHIVAL DESIGNS
687+ reviews · Tap to call (888) 890-2353
Best Price Guarantee— we beat any competitor by 10%·Family-owned since 1983·(888) 890-2353
ARCHIVAL DESIGNS
Talk to a designer
(888) 890-2353
Garage PlansModify a PlanBuild Cost📅 Talk to David
HomeContemporary And Modern House PlansModern 7,236 Sq Ft Quadplex Townhouse with 3 Levels Per Unit

Modern 7,236 Sq Ft Quadplex Townhouse with 3 Levels Per Unit

Plan #AC6505-A · 7,236 sq ft · 8 ba · 3.0 story · 4-car

Contemporary And Modern House PlansMulti FamilyNew American
★★★★★Read 687+ verified reviews →
Estimated cost to build the home
$1085k – $1810kFree zip estimate ↓
Have questions about this plan? Book a free plan review with David →
David Park · Residential Plan Advisor · 30+ years
7,236
Sq Ft
Beds
10
Baths
3.0
Stories
4
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
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…
  • Seeking a multi-family investment property (4 identical units, 8 full baths, 4 half baths)
  • Want to maximize density on a compact site (7,236 sq ft on a 68-foot-wide by 44-foot-deep lot)
  • Need parking for multiple households (4-car garage, 1 per unit)
  • Planning multi-generational living (4 separate 3-level units with independent entry)
  • Prefer a vertical design to minimize lot coverage (3-story townhouse configuration)
! May not be the best fit if you…
  • Looking for a single-family home—this is a 4-unit quadplex
  • Want a traditional single-story layout (this is a 3-story vertical design)
  • Need a large single garage—each unit has only 1-car garage space
  • Prefer a sprawling footprint (this design is compact at 68 feet wide by 44 feet deep)

This plan tends to appeal to:

Multi-Family InvestorsMulti-Generational FamiliesUrban DevelopersRental Property BuildersDensity-Focused Builders
Think this is the one? Choose your package above and check out when you're ready.Yes — this plan fits me →

Floor Plans

Tap to zoom · Download sample

Main Level — 7,236 sq ft · 68.00′W × 44.00′D

↓ Free Sample
floor plan

Choose Your Package

Not sure? Call us — we'll help
PDF Set
Build as-is or minor changes
$3,075
  • 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
$3,330
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed
5 Prints + PDF
$3,373
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed
CAD + PDF Bundle
$5,843
  • Complete construction drawings
  • Unlimited build license included
  • Copyright release — print as needed

About this plan

Spanning a total of 7,236 sq ft, the Castlewood quadplex townhouse provides four identical 3-level units, each configured with 1,809 sq ft of heated living space. This multi-family design occupies a footprint 68 ft wide by 44 ft deep, catering to investors or multi-generational households seeking a dense, vertical housing solution. The exterior profile reaches a maximum building height of 31 ft 9 in, defined by a 3:12 roof pitch that supports a contemporary aesthetic.

Each unit features a stratified floor plan, beginning with a ground level of 466 sq ft that provides entry access and utility space. The central living core resides on the main level, encompassing 664 sq ft dedicated to an open-concept kitchen, dining, and living area. This arrangement maintains clear sightlines between the food preparation zone and the common social space, grounded by 8-foot ceiling heights throughout the primary living levels.

The upper level of each unit contains 679 sq ft of private quarters, housing the bedroom suites and associated bathrooms. With a total of 8 full bathrooms and 4 half bathrooms distributed across the four units, the layout ensures consistent access to sanitary facilities for all residents. The design also incorporates 240 sq ft of porch area and 184 sq ft of deck space, extending the usable footprint into the exterior environment.

Construction specifications include 2x6 wall framing and truss roof framing, ensuring structural integrity for the three-story configuration. The total garage area of 972 sq ft accommodates 4 cars, allowing for a 1-car garage allocation per unit. This integrated parking strategy minimizes lot coverage while providing secure, direct-access storage for each household.

Key Features: 8 full bathrooms, 4 half bathrooms, 4 kitchens, 3-level quadplex configuration, 1-car garage per unit, 3:12 roof pitch, 2x6 wall construction, truss roof framing, open-concept living, private balcony and patio access.

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)7,236 sq ft
1st Floor1,864 sq ft
2nd Floor2,656 sq ft
3rd Floor2,716 sq ft
Rear Porch240 sq ft
Total Porch240 sq ft
Deck184 sq ft
Full Bathrooms8
Half Bathrooms4
Stories3.0
Width of House68′
Depth of House44′
Building Height31′9″
1st Floor8′
2nd Floor8′
3rd Floor8′
Garage4-car, front-load
Garage Area972 sq ft
FoundationSlab
Wall Framing2x6
Roof FramingTruss
Roof Pitch3:12

Key Features

3.0-story layout
8-ft ceilings on the main level
4-car garage
68.00′ × 44.00′ 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 #AC6505-A
HOUSE · 7,236 sq ft · bd / 8 ba / 4-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
$942k
Most common
Mid-range
$1021k
Premium
$1242k+
Modeled on Wichita, KS — our US price-baseline city. Use the form below to generate an exact estimate for your own location.
Refine for your location
Tiers above are baselined on Wichita, KS. Enter your own location for an exact Estidraft estimate.
Free · We email you the full line-item PDF.

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.

Still have questions about this plan? Talk to a real person — no pitch, no fee.

Starting at
$3,075
View packages