Built for designers. Trusted by the people who trust you.
Your reputation is on the line every time you refer a contractor. We protect it.
A contractor who works the way you work.
We’ve spent years working alongside designers and architects on Manhattan's most demanding residential renovations. We know how to read a spec sheet, coordinate with your vendors, and flag a problem before it becomes your problem. When you bring us a project, we protect your relationship with your client as carefully as you do.
Most general contractors are built for volume. We are built for precision. We take a limited number of projects at a time so that every renovation we touch receives the attention your vision demands. From the first set of drawings to the final punch list, we operate as an extension of your team — not a separate entity you have to manage.
How we work with your studio.
01 — Pre-Construction Collaboration
We review drawings with you before work begins — identifying sequencing issues, long-lead items, and anything that could compromise the design intent downstream. Problems caught early stay problems. Problems caught late become compromises.
04 — Luxury-Grade Subcontractors
Every trade partner we work with is held to the same standard we hold ourselves. Millwork, stone, tile, lighting, custom hardware — we know which vendors perform at publication level and we use them.
02 — Single Point of Contact
You work directly with project leadership from start to finish. No handoffs to a site supervisor you've never met. No chasing down answers. One contact, full accountability.
05 — Permits & Approvals
We coordinate the full approvals process through our network of trusted architects and expeditors. You don't chase paperwork. We manage it.
03 — Proactive Communication
We send updates without being asked. If something changes — a material delay, a field condition, a schedule shift — you hear it from us first, before your client does.
06 — Budget Transparency
Clear estimates from day one. No hidden markups mid-project. If scope changes, we discuss it before we act on it. Your client's budget is treated with the same respect as the design itself.
Project scope & geography.
— Full Gut Renovations
— Kitchen & Bath
— Full Interior Packages
— Exterior & Facade Work
— New Construction & Full Builds
— Retail & Hospitality
— Pre-Construction Services
We specialize in high-end residential renovation across Manhattan, Long Island's North Shore, and the Hamptons, with select retail and hospitality work for clients in our network. As we expand, we're bringing the same standard to full-scale builds and exterior work across the region.
“When a designer hands us their vision, our job is to make sure nothing gets lost between the drawing and the finished space.”
Let's talk about your next project.
We work with a select number of design studios at a time. If you're considering Rosembarg for an upcoming project — or want to introduce yourself before the right job comes along — we'd like to hear from you. We respond to all inquiries within one business day.