What We Do.
We specialize in full-home remodels designed with intention and executed with precision.
Full Home
Renovation
Custom Home
Design & Build
Full Service
Design-Build
Space Planning
& Interior Design
Material Selection
& Procurement
Construction
Management
Our Work.
Each project reflects a tailored response to the client, the space, and the intended experience of the home.
Our Values.
Design
Every project begins with intention. Thoughtful design shapes how a space feels, functions, and endures.
Detail
It’s the smallest decisions that define the whole. We believe refinement lives in the details.
Cohesion
Design and construction working together creates clarity, continuity, and better outcomes.
Integrity
Transparent communication, honest guidance, and a process built on trust.
Vision
Good design solves problems. Great design elevates daily living.
Collaboration
A close partnership ensures your vision is understood, refined, and thoughtfully executed.
Our Impact.
Years Experience
Kitchens & Baths Designed
Preferred Vendors & Suppliers
Vetted Trade Partners
in Completed Projects
Client Referral Based
About Me.
My name is Jay Nir — and I’ve spent my entire career obsessed with one thing: creating extraordinary experiential spaces.
Over the past 20 years I’ve designed and built beautiful, functional spaces across luxury residences, boutique hotels, and restaurant concepts — in New York City, on Long Island, and in major cities across the U.S. including Los Angeles, San Francisco, Pittsburgh, and Hartford. Along the way I’ve served as Director of Design for a boutique Design-Build Firm, Director of Retail Experience for a national hotel company, Director of Operations across multiple hospitality projects, and Construction Manager for a local real estate developer. That breadth of experience is what allows J. Nir Design Build to see both the big picture and the finest details — simultaneously.
I founded JNDB to bring a truly integrated design-build experience to Nassau County homeowners — one where design and construction are guided by one vision, one standard, and one key person, from the very first conversation to the final walkthrough.
Every project I accept is both professional and personal. I work with a select number of clients at one time to ensure your home receives the attention, intention, and craftsmanship it deserves.
If you’re ready to create something extraordinary, I’d love to start the conversation.
The Value of Design Services.
Anyone can pick finishes. Thoughtful design is what transforms those selections into a home that feels intentional, cohesive, and unmistakably yours.
This is what separates a renovation that looks finished from one that feels extraordinary.
When design and construction are guided by the same vision from the very beginning, the result isn’t just a beautiful home — it’s a home that works exactly the way you imagined it.
Start with design.
A Cohesive Approach from Concept to Completion.
Design and construction are considered together from the beginning, allowing each decision to support the overall vision of the home. This integrated approach reduces misalignment, streamlines communication, and ensures details are carried through with intention.
Rather than separating design from execution, we guide the process holistically — resulting in spaces that feel unified, functional, and thoughtfully resolved.
A Structured Process That Supports Better Outcomes.
Clear phases ensure clarity, efficiency, and continuity from vision through completion.
01
Concept
Every project begins with deep listening. We explore your vision, your lifestyle, and your goals — translating ideas and inspiration into a clear design direction.
02
Creation
With direction established, we develop the full design — selecting materials, finishes, fixtures, and architectural details that elevate the space and honor the vision.
03
Coordination
Aligning specifications, lead times, and procurement with the construction schedule — ensuring every element is ready, sequenced, and seamlessly integrated.
04
Construction
Careful oversight throughout every phase of execution — ensuring the design intent is carried through to the very last detail.
Contact Us.
Every great home starts with a casual conversation. On a “discovery call” we discuss your vision, your goals, and explore whether J. Nir Design Build is the right partner for your project. No commitment — just clarity on what’s possible.