A Better Addition Starts With Understanding Your Home
The first conversation is always about understanding what the homeowner is working with, not presenting a pre-packaged solution.
- A split-level may require structural evaluation before opening walls
- A colonial may present options for vertical vs. rear expansion
- A ranch may allow lateral growth but be limited by zoning
- Older homes may need system upgrades before expansion
Each scenario involves a different structural approach, a different permit path, and a different cost profile.
See What Your Addition Could Look Like
A selection of completed home additions and renovation work on homes throughout Long Island.
See how different homes are expanded to improve space, flow, and everyday functionality.
Real Stories From Real Homeowners
Every project comes with challenges and decisions.
These reviews show how those were handled and what the outcome was.
PRO New York Remodeler of the Year Awards
Center Island Contracting received three awards at the PRO New York Remodeler of the Year Awards Gala Gold for Residential Kitchen, Platinum for Residential Exterior, and Platinum for Entire House renovation. These reflect evaluated project quality measured against the best remodeling firms in New York State.
Gold
Residential Kitchen
$60,001-$100,000
Platinum
Residential Exterior
$100,001-$200,000
Platinum
Entire House
$750,001-$1,000,000
What Older Dix Hills Homes Mean for Your Addition
Dix Hills developed in distinct construction waves. The era in which a home was built determines its structural system, foundation type, and mechanical condition, all of which directly affect how a home addition in Dix Hills is planned and permitted.
The Homes That Shape Dix Hills
Pre-WWII and Early Homes (Pre-1945):
The oldest structure in Dix Hills is the John Rogers House at 627 Half Hollow Road, a saltbox-style home built in 1732, and a small number of pre-war farmhouses remain in the hamlet today.
These properties require careful structural evaluation and may be subject to historic designation review through the Town of Huntington before any addition work can proceed.
Postwar Ranch and Cape Style Homes (1940s–1950s):
In 1941, developer J. Franklin Bradley established a residential community in Dix Hills and relocated the ranch-style model home from the 1939 New York World's Fair to the hamlet.
Ranch homes and Cape Cods from this era are now over 70 years old, and foundation assessments along with mechanical upgrades are typically required before an addition can be connected.
Split-Levels and Raised Ranches (1956–1970s):
The split-level is the defining home type of Dix Hills, documented in a 1956 New York Times account of new construction in the hamlet and expanded through the Dix Hills Village development advertised in Newsday from 1963 to 1969.
Their staggered floor plans frequently place load-bearing walls exactly where homeowners want to open up space, a condition that must be identified and engineered before any design is finalized.
Colonials and Estate Homes (1965–Present):
Larger colonial-style homes arrived in the late 1960s and 1970s, followed by custom colonials and contemporary estates through the 1990s.
Many are 30 to 50 years old with original mechanical systems that require upgrading as part of any addition project.
Teardowns and New Construction (2000s–Present):
Older homes on large lots are increasingly replaced with custom builds. These projects require careful planning to meet zoning, permitting, and site-specific requirements.
Cost Clarity:
Where Your Budget Goes in an Addition
Addition costs are shaped by five primary variables:
Structural Work:
Opening walls or expanding space often requires engineered beams and reinforcements. Identifying this early prevents costly surprises later.
Site and Foundation Conditions:
Soil type and drainage can impact foundation design. A proper site review helps avoid redesign and delays.
Permits and Approvals:
Town permits, septic review, and potential zoning approvals all affect timeline and cost. Planning for these upfront keeps the project on track.
Mechanical Upgrades:
Older homes may require electrical, HVAC, or plumbing upgrades before supporting new space.
Finish Selections:
Materials are selected and priced before construction begins, helping keep the budget controlled.
Typical ranges on Long Island:
A fixed-price contract, produced after full pre-construction documentation, is the only way to hold a budget number with real confidence.
Committed to Our Surrounding Communities
Center Island Contracting serves Dix Hills and surrounding areas including;
- Melville
- Commack
- Huntington Station
- Deer Park
- Wheatley Heights.
Many of these communities share similar home styles and permitting requirements, allowing for a consistent and efficient project approach.
What You Need to Know
Planning and Permitting in Dix Hills
Home additions in Dix Hills require permits and approvals through multiple municipal and county agencies.
Town of Huntington Building Division
All structural additions require a building permit from the Town of Huntington Building & Housing Division. Applications must include architectural drawings, a site plan with setback dimensions, and structural engineering documentation.
You can access permit applications, and submittal requirements through the Town’s online portal.
Suffolk County Department of Health Services (SCDHS)
Properties on private septic systems, which cover the majority of homes in the hamlet, may require SCDHS review if the addition increases bedroom count or square footage. A septic upgrade or relocation may be required before approval is granted.
Zoning Board of Appeals
Additions that encroach on required setbacks or exceed lot coverage limits require a variance from the Town of Huntington ZBA. Hearings can add 4 to 6 months to the pre-construction timeline, and Center Island Contracting identifies ZBA exposure during the initial site review.
Suffolk County Planning Commission
Projects near county roads or meeting specific size thresholds may require Planning Commission referral before the Town issues final approval. CIC evaluates this on a project-by-project basis.
Note: Dix Hills does not have a hamlet-wide historic district or architectural review overlay. Standard Town of Huntington zoning applies to most residential addition projects.
Visit Our Design Studio & Showroom
Center Island Contracting maintains a private design center and showroom where you can review materials, finishes, and layouts in person with guidance from our team.
Seeing everything at full scale helps you make clearer decisions and avoid costly changes during construction.
By Appointment Only - Every visit is scheduled in advance to ensure focused, uninterrupted time with our design team.
Why Homeowners Trust Our Work
A Simpler, More Organized Way to Build
With one contract and one team, Center Island Contracting manages your project from design through final completion, keeping everything aligned from start to finish.
Find the Right Addition for Your Home
Additions are designed around the existing structure, lot conditions, and Town of Huntington zoning.
Second-Story Additions
For ranch homes where lateral expansion is constrained by setback or lot coverage limits. Requires structural assessment of the existing foundation and framing.
Primary Suite Additions
The most requested addition type in Dix Hills, typically including bedroom expansion, a five-piece bathroom, and dedicated closet space.
Kitchen Expansions
Often involve load-bearing wall removal between the kitchen and adjacent rooms. Engineering input is required before design is finalized.
In-Law Suite / Accessory Living Space
Practical on many Dix Hills lots, but must be evaluated against Town of Huntington accessory dwelling requirements.
Family Room or Great Room Addition
Rear-facing extensions common on colonial and split-level homes, typically involving a slab or crawl space foundation extension.
Home Office Addition
Ground-level additions for dedicated workspace, separated from the home's main living areas.
Our Coverage Areas Near Dix Hills
Center Island Contracting serves homeowners throughout western Suffolk County and Nassau County, including Dix Hills, Melville, South Huntington, Commack, Deer Park, Wheatley Heights, Huntington Station, East Northport, Elwood, Babylon, West Babylon, Lindenhurst, and Amityville.
Other Services We Provide
Additions by Home Style
Cape-Style Additions
Cape Cod Styles are typically single-and-a-half story homes with steeply pitched roofs, and additions generally involve rear ground-level extensions or dormer expansions. The design priority is maintaining roofline proportions while adding functional square footage.
Ranch-Style Additions
Ranch homes sit on generous lots with real lateral expansion potential, though ground-level extensions require careful roofline integration. Where lot coverage limits apply, a second-story addition is an option pending structural assessment.
Split-Level Additions
Split-levels are the most common home type, and additions must connect logically to an existing level. Load-bearing walls at level boundaries are often exactly where homeowners want to open up space, making structural identification before design the step that determines actual cost.
The Process: How Your Project Comes Together
We begin with a pre-construction phase where scope, materials, and permit requirements are fully resolved before construction starts, keeping projects on schedule and preventing mid-build cost surprises.
Consultation & Site Assessment
Define goals, assess home, and set a realistic budget
Design & Planning
Create plans and finalize selections
Permitting
Submit and manage approvals
Construction
Execute in phases with clear communication
Completion
Final walkthrough and documentation
Talk to Us About Your Project
Start with a conversation about your home, your goals, and what’s possible.
Phone
Hours of Operation
Monday - Friday - 8:00 a.m. - 6:00 p.m.
Saturday-Sunday- Closed
About Home Additions in Dix Hills