16-1238 GARAGE PLAN – Colonial Home Plan – 0-Bed, 1-Bath, 500 SF

Colonial Cape Cod Carriage House with Bonus Living Space

A classic garage apartment design blending Colonial and Cape Cod architecture with efficient living space above a two-car garage.

This thoughtfully designed Colonial Cape Cod carriage house plan delivers timeless curb appeal and modern flexibility in a compact footprint. Inspired by traditional American architecture, this garage apartment is ideal for homeowners seeking an accessory dwelling unit (ADU), guest suite, rental apartment, or private studio space without sacrificing style or quality.

The symmetrical façade, centered dormer windows, and clean horizontal siding give this design a refined, heritage-driven look that fits seamlessly into suburban, coastal, and traditional neighborhoods. Whether built as a standalone structure or paired with a primary residence, this plan offers lasting value and architectural consistency.

Architectural Style Overview

This plan is rooted in Colonial and Cape Cod traditions—two of the most enduring residential styles in North America. Colonial architecture is known for balance, proportion, and simplicity, while Cape Cod design adds charm through steep rooflines, dormers, and compact efficiency.

• Symmetrical front elevation
• Central dormer for added headroom and light
• Classic roof pitch inspired by Cape Cod cottages
• Traditional trim detailing for timeless appeal

Exterior Materials & Curb Appeal

The exterior is finished with horizontal lap siding, a hallmark of both Colonial and Cape Cod homes. This material choice provides a clean, classic appearance while remaining cost-effective and easy to maintain. Crisp trim accents around the garage doors and windows enhance contrast and visual interest.

• Durable siding exterior suitable for multiple climates
• Two-car front-entry garage doors
• Low-maintenance material palette
• Architectural dormer adds character and function

Garage Level Functionality

The ground level features a spacious two-car garage designed for everyday practicality. With ample clearance and storage potential, this garage easily accommodates vehicles, tools, bicycles, and seasonal equipment.

• 2-car garage layout
• Room for workshop or storage zones
• Ideal for alley-load or detached placement

Upper-Level Living Space

Above the garage, the plan includes approximately 500 square feet of heated living space. The open layout allows for multiple configurations, making it suitable as a studio apartment, guest retreat, home office, or short-term rental.

Natural light flows in through dormer and side windows, creating an inviting atmosphere that feels larger than its footprint. Vaulted or sloped ceilings follow the roofline, reinforcing the Cape Cod character while enhancing spatial comfort.

• Open-concept bonus room
• Flexible living/sleeping arrangement
• Space for kitchenette or wet bar
• Full bathroom accommodation

Bathroom & Utility Considerations

This carriage house design includes a full bathroom, making it fully self-sufficient for independent living. Plumbing is efficiently stacked above the garage for cost-effective construction and easy utility access.

Laundry hookups can be added within the living space or garage level depending on local code requirements and personal preference.

Ideal Uses for This Carriage House Plan

• Accessory Dwelling Unit (ADU)
• Guest house or in-law suite
• Rental apartment for passive income
• Home office or creative studio
• College-age or multigenerational living

Why Choose a Carriage House Design?

Carriage houses have grown in popularity due to zoning flexibility and the demand for secondary living spaces. Historically used as quarters above horse stables or garages, modern carriage house plans now offer efficient, stylish solutions for today’s housing needs.

According to architectural historians, carriage houses maintain strong resale appeal because they complement traditional neighborhoods without overpowering the main residence. Learn more about the historical evolution of carriage houses on
ArchDaily.

Construction & Plan Package Inclusions

Every plan includes professional-grade documentation to streamline permitting and construction:

• Editable CAD files
• Printable PDF blueprints
• Structural engineering included
• Unlimited build license
• Foundation options available

Customization & Modifications

This Colonial Cape Cod garage apartment plan can be customized to meet your specific needs. Popular modifications include adding a dedicated bedroom, expanding the living area, adjusting garage size, or adapting the exterior materials to match an existing home.

Because the footprint is compact and structurally efficient, modification costs are typically lower than larger house plans.

Designed for Long-Term Value

With its classic styling, efficient layout, and versatile use cases, this carriage house plan offers exceptional long-term value. It complements Colonial, Traditional, and Cape Cod main homes while remaining flexible enough for future lifestyle changes.

Whether you’re building for family, income, or personal use, this design delivers a timeless solution grounded in architectural tradition and modern practicality.

Build with Confidence

This plan is ideal for homeowners, builders, and developers seeking a proven design with broad market appeal. With included engineering, flexible licensing, and a style that never goes out of fashion, it’s a smart investment in both function and form.

Build once, build again, or build for the future—this Colonial Cape Cod carriage house plan is ready when you are.