Home Additions & ADU Builder in Martin County, FL
Custom Home Additions in Stuart, Palm City, Jensen Beach, Hobe Sound & Sewall’s Point
Need more space but don't want to leave the home or neighborhood you love?
Down East Contracting builds custom home additions throughout Martin County, Florida, helping homeowners expand their living space with additions designed to look and feel like a natural part of the existing home.
Based in Jensen Beach, we serve homeowners throughout Stuart, Palm City, Jensen Beach, Hobe Sound, Sewall's Point, Rio, Port Salerno, Hutchinson Island, and surrounding Martin County communities.
From the first site evaluation through construction and final finishes, our team can coordinate the complete addition project.
From Planning to Finished Construction
A home addition involves much more than framing another room onto the house. As a licensed Florida general contractor, Down East Contracting coordinates the different phases and trades needed to take the project from planning through completion.
❋ Planning, Engineering & Permitting
Every addition starts with understanding the existing home, the proposed space, and what will be required to build it. Depending on the project, this can include architectural plans, engineering, permitting, site planning, and coordinating required approvals and inspections.
❋ Foundation & Structural Construction
Once construction begins, work can include site preparation, foundations, concrete and masonry, structural framing, trusses, sheathing, and the roof tie-in. Special attention is given to integrating the new structure with the existing home.
❋Electrical, Plumbing & HVAC
The new space may require electrical, plumbing, and HVAC systems, including lighting, outlets, fixtures, water and drain lines, equipment, and ductwork. These trades are coordinated as part of the overall addition construction.
❋ Exterior & Interior Finishes
The final stages bring the addition together with impact-rated windows and doors, roofing, stucco or exterior finishes, insulation, drywall, flooring, cabinetry, countertops, trim, paint, fixtures, and other custom finishes.
Properties throughout Martin County vary considerably, from established homes in Jensen Beach and Stuart to waterfront properties, larger Palm City lots, and homes throughout Hobe Sound and Sewall's Point. Because every property is different, we start by evaluating the existing home and the space available for expansion. The size and design of an addition can be influenced by the existing structure, property setbacks, lot coverage, drainage, utilities, septic or sewer conditions, structural requirements, and the location of the proposed addition. Understanding these conditions early in the process helps determine what is practical before moving too far into design.
Building Additions for Martin County Homes
Florida Room Conversion to Home Addition — Jensen Beach
One of our local projects involved transforming an existing Florida room in Jensen Beach into finished interior living space, creating an additional bedroom and sitting area.
Projects like this demonstrate how existing areas of a home can sometimes be reimagined to provide the additional space a homeowner needs while integrating the finished area with the rest of the residence.
Thinking About Adding Onto Your Martin County Home?
If you're starting to run out of room, an addition may allow you to create the space you need without giving up your current property.
Whether you're considering a new bedroom, primary suite, family room, in-law suite, garage, guest space, or larger home expansion, Down East Contracting can help you evaluate the project and determine the next steps.
Start Planning Your Home Addition
Have an idea for expanding your home?
Contact Down East Contracting to schedule a consultation for your home addition in Jensen Beach, Stuart, Palm City, Hobe Sound, Sewall's Point, or anywhere throughout Martin County, Florida.
Schedule Your Home Addition Consultation Today
Frequently Asked Questions
Still have questions? Take a look at the FAQ or fill out our contact form with your project specifics and our general contractor will connect with you
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Building an Accessory Dwelling Unit (ADU) on your property depends on the specific zoning, lot size, setbacks, existing structures, utilities, and other development requirements that apply to your property.
It is also important to understand that properties within Martin County can fall under different local jurisdictions. In addition to unincorporated Martin County, there are incorporated municipalities including the City of Stuart, Town of Sewall’s Point, Town of Jupiter Island, Town of Ocean Breeze, and Village of Indiantown. Each jurisdiction may have its own zoning, permitting, and development requirements.
Communities such as Palm City, Jensen Beach, Hobe Sound, Port Salerno, and Rio are generally unincorporated areas of Martin County, while properties within municipalities such as Stuart or Sewall’s Point may be subject to that municipality’s specific requirements.
Down East Contracting can help you determine which jurisdiction applies to your property and evaluate the initial feasibility of your ADU project. We can review available property information, zoning considerations, setbacks, lot configuration, existing structures, utilities, and other factors that may affect where and what you can build. From there, DEC can help coordinate the design, engineering, permitting, and construction process to move your ADU from an initial idea toward a completed project.
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ADU setback requirements in Martin County vary based on the property’s zoning district, lot configuration, and location. Additional setbacks may also apply to properties near wetlands, shorelines, preserves, or other environmentally sensitive areas.
Down East Contracting can review your property address and survey to help determine the applicable setbacks and available building area before beginning the ADU design process.
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The cost to build an ADU in Martin County varies based on size, design, site conditions, finishes, utilities, and permitting requirements. Additional costs such as septic modifications, site work, engineering, impact fees, and utility upgrades can also affect the overall budget.
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Adding an ADU can increase the property's expected wastewater flow, particularly when adding bedrooms or living area. In Martin County, properties on septic require Health Department review when additional living space is constructed, and the existing system may need to be evaluated or modified to accommodate the ADU.
During our detailed property walkthrough, Down East Contracting will discuss your existing septic system, proposed ADU location, utility needs, and other site conditions that could impact the project. This helps identify potential requirements early and allows us to plan the project accordingly.
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The timeline for an ADU varies based on the size, design, permitting, site conditions, and utility or septic requirements. Before construction begins, the project typically goes through design, engineering, plan review, and permitting. Martin County requires permits and plan review for new residential structures, followed by inspections throughout construction.
Once permitted, a typical ADU may take approximately 4–8 months to construct, depending on complexity and site conditions