Turning a one-story ranch house into a two-story Dutch Colonial with an open floor plan requires careful structural planning, smart material choices, and a clear vision for the finished space. The transformation of a 1940s ranch in Westerly, Rhode Island, into a family-friendly home shows exactly how such a renovation can be done well. By adding a gambrel roof and a full second story, the project added 1,250 square feet to the original 1,850-square-foot footprint, effectively tripling the usable space. For homeowners and builders considering a similar transformation, understanding the structural approach, design decisions, and material selections can make the difference between a successful renovation and a costly misstep.
This article breaks down the key strategies behind converting a ranch into a two-story home with an open floor plan, covering the structural considerations, kitchen and living area design, material selection, and exterior upgrades that brought this project to life.
Structural Considerations for Adding a Second Story to a Ranch House
Adding a second story to an existing single-story home is one of the most cost-effective ways to increase living space without expanding the building footprint. However, the structural engineering behind such an addition requires careful evaluation of the existing foundation, roof framing, and load-bearing capacity.
Evaluating the Existing Foundation
Before any vertical addition can proceed, the existing foundation must be assessed for its ability to support additional loads. In the Westerly project, the original 1940s ranch sat on a solid foundation that could handle the weight of a second floor. Not every home will be so fortunate, and a structural engineer should always be consulted before proceeding.
Key factors to evaluate include:
- Foundation type: Poured concrete, concrete block, or stone foundations each have different load-bearing capacities.
- Footing dimensions: Wider footings may be needed to distribute the additional weight from the second story.
- Soil conditions: The soil bearing capacity underneath the foundation determines whether reinforcement is necessary.
- Existing cracking or settling: Any signs of foundation movement must be addressed before adding load.
The Gambrel Roof Advantage
The gambrel roof was a key design choice in this renovation. As TOH host Kevin O’Connor noted, the gambrel roofline is remarkably efficient for creating more space. The distinctive double-sloped design provides generous headroom on the second floor while keeping the overall roof height manageable. Similar Dutch Colonial revival renovations have used this same roof strategy to maximize second-floor square footage.
How the Gambrel Roof Creates Usable Space
The gambrel roof’s steep lower slope and shallow upper slope create a barn-like interior volume that maximizes usable square footage on the second floor. Unlike a standard pitched roof, which wastes significant space in the eaves, the gambrel shape allows for full-height rooms across most of the floor area. This design choice meant the second story could accommodate three bedrooms and two bathrooms without awkward dormers or kneewalls.
Load Path and Structural Framing
The structural framing for a second-story addition must establish a clear load path from the roof down to the foundation. In this project, the original roof was removed, and a new floor system was framed across the existing exterior walls. The second-story walls were then built on top of this new floor platform, with the gambrel roof trusses bearing directly on the new walls.
- New floor joists were sized to span between load-bearing walls without excessive deflection.
- Engineered lumber such as LVL beams and glulams were used for long-span headers and ridge beams.
- Structural connections at the existing wall-to-new-floor interface were reinforced with hurricane ties and specialized brackets.
Designing an Open Floor Plan for Modern Family Living
The heart of this renovation was the transformation of the main floor into an open-plan kitchen, dining, and living area. The homeowners wanted a space where they could cook, eat, and relax while keeping an eye on their children at play. Achieving this required removing interior walls, reconfiguring the floor plan, and unifying the space with consistent finishes and architectural details. A similar approach was used in a Craftsman bungalow indoor-outdoor great room renovation that also prioritized connected living spaces.
Removing Walls and Reconfiguring Space
The original ranch had a compartmentalized layout with small, separate rooms. To create the open plan, several non-load-bearing walls were removed. Load-bearing walls required steel or engineered beam headers to transfer structural loads across wider spans.
| Design Element | Before Renovation | After Renovation |
|---|---|---|
| Living area | Separate living room, 12 x 16 ft | Open-plan great room, 28 x 22 ft |
| Kitchen | Galley kitchen, 8 x 12 ft | L-shaped kitchen open to dining, 14 x 12 ft |
| Dining | Separate dining room | Integrated dining area adjacent to kitchen |
| Ceiling height | 8 ft standard | 10 ft in step-down living area, coffered ceiling |
| Flooring | Mixed carpet and tile | Unified white oak flooring throughout |
Coffered Ceilings and Architectural Detailing
A coffered ceiling was installed across the main living area to visually unify the open space. This ceiling treatment used preassembled picture-frame molding fitted inside beams that crisscross a ceiling of white oak tongue-and-groove boards. The result is a classic, crafted look that defines the living zone within the larger open plan.
The step-down living area was further defined with low bookcase built-ins featuring integrated posts and pilasters. This architectural approach creates separate functional zones within the open plan without relying on walls:
- Living zone: Sunken area with coffered ceiling, fireplace wall with nickel-gap cladding, floating shelves, and lower cabinets.
- Dining zone: Open area adjacent to the kitchen with access to the patio and deck through south-facing doors.
- Kitchen zone: L-shaped workspace with perimeter cabinets and a large island for seating and prep.
- Mudroom and entry: Transition space with closed and open storage, located off the kitchen.
Selecting Materials and Finishes That Last
Material selection played a critical role in this renovation, balancing durability with aesthetic appeal. The choices made here offer lessons for any residential construction project, especially those involving major structural changes.
White Oak Flooring and Cabinetry
White oak flooring was specified throughout the main living areas for its hardness, grain character, and ability to be refinished multiple times over the life of the home. Unlike engineered flooring, solid white oak can be sanded and refinished decades after installation, making it a sustainable choice for long-term ownership.
Kitchen cabinets were custom-built with white flat-panel doors and crown molding, painted in Benjamin Moore Decorator’s White for the perimeter and Stillwater for the island base. Quartz countertops in a marble look offered the durability of engineered stone without the maintenance requirements of natural marble.
Material Choices for High-Traffic Areas
Several material choices were specifically selected for their durability in a home with young children:
- Quartz countertops: Non-porous, stain-resistant, and no need for sealing, ideal for busy kitchens.
- Porcelain floor tile in mudroom: Extremely hard, water-resistant, and easy to clean.
- Sunbrella upholstery on mudroom bench: Solution-dyed acrylic fabric that resists stains, fading, and mildew.
- Nickel-gap wall cladding: Vertical wood boards with a small gap between each, providing a durable wall surface that hides dings and dents.
Windows and Doors for Natural Light
An abundance of windows and patio doors was central to the design. The project used Marvin Windows and Doors products throughout, chosen for their energy efficiency, operable options, and clean aesthetic. The south-facing patio doors provide direct access from the dining area to a deck and stone patio, extending the living space outdoors.
The wide expanse of glass serves multiple purposes:
- Floods the interior with natural light, reducing the need for artificial lighting during daytime hours.
- Provides visual connection to the outdoors, making the relatively compact 1,850-square-foot main floor feel larger.
- Offers cross-ventilation opportunities through operable casement and awning windows.
Exterior Transformation and Outdoor Living Spaces
The exterior of the home was completely reimagined alongside the interior renovation. The original low-slung ranch silhouette was replaced with a two-story Dutch Colonial form featuring cedar shingle siding, white trim, and bluestone steps leading to both the front and side entrances. Thoughtful private quarters and functional space design extended from the interior layout into how the exterior connected to the yard.
Mudroom and Entry Design
The mudroom serves as the primary family entry point, lined with a combination of closed cabinets and open cubbies. This space provides a practical transition zone where children can remove boots and coats before entering the main living area. The floor is tiled for easy cleaning, and the bench upholstery uses Sunbrella fabric for stain resistance.
A well-designed mudroom should include:
- Individual cubbies for each family member to store shoes, backpacks, and outerwear.
- Closed upper cabinets for out-of-season items and overflow storage.
- A durable bench surface with enough width for sitting while putting on or removing shoes.
- Easy-to-clean flooring such as porcelain tile or luxury vinyl plank that withstands mud, snow, and water.
Patio, Deck, and Outdoor Connections
South-facing patio doors provide seamless access from the dining area to a bluestone patio and deck. A pergola defines the outdoor dining zone, while a wraparound deck connects the main living areas to the yard. These outdoor spaces effectively double the entertaining area during warmer months.
The exterior material palette was chosen for longevity and low maintenance. Cedar shingle siding naturally weathers to a silver-gray patina over time and requires minimal upkeep beyond occasional cleaning. GAF roof shingles provide reliable weather protection, while Mortairvent rainscreen technology behind the siding allows the wall assembly to dry, preventing moisture accumulation and rot.
The bluestone steps and patio surface offer a natural stone look with excellent durability. Bluestone resists freeze-thaw cycles, making it an ideal choice for New England climates where temperature swings are common. The stone patio was installed by a masonry contractor on a compacted gravel base with proper drainage grading to direct water away from the foundation.
This transformation from a cramped 1940s ranch into a spacious two-story home demonstrates how thoughtful structural planning, smart material selection, and careful attention to architectural detailing can dramatically improve both the function and value of a home. For builders and homeowners planning similar projects, the lessons from this renovation apply at any scale: start with a solid structural assessment, invest in quality windows and doors, use materials that stand up to daily use, and design the floor plan around how your family actually lives.