Luxury Construction Consulting, Redefined.

Our services are designed to take the burden off your shoulders, so you can focus on vision, not logistics. Whether you're restoring a brownstone, renovating a historic estate, or building something entirely new, Cosima & Company ensures the process is efficient, elegant, and exacting.

Owner Representation & Advocacy

We protect your interests at every step. From design meetings to jobsite walkthroughs, we act as your personal construction executive, managing contractors, ensuring transparency, and translating technical decisions into plain English. You remain in control, without being in the middle.

You don’t have to learn the construction business. That’s our job.

Construction Oversight

We attend weekly walkthroughs, coordinate with trades, and monitor timelines, budgets, and change orders, quietly keeping the project on track. Think of us as the conductor behind the curtain, ensuring the entire build performs as it should.

While others are reactive, we stay three steps ahead.

Contractor Vetting & Negotiation

We pre-screen contractors, verify credentials, review bids, and manage contract negotiations to make sure your project starts strong, and stays strong. We advocate for balanced terms, fair scopes, and builders who match your standards.

The wrong team can cost more than the wrong tile.

Architectural & Finish Coordination

We help bridge the gap between the design on paper and the work on-site. Whether you’re navigating material substitutions, layout tweaks, or finish conflicts, we ensure decisions are aligned with the original vision, and achievable within the project constraints.

Luxury lives in the details. We protect those.

Schedule & Budget Management

We monitor critical path schedules and flag potential delays before they become problems. Our budgeting oversight prevents scope creep, protects contingency, and ensures that premium decisions are made consciously, not reactively.

No surprises. No panic. Just measured, informed progress.

Preservation-Focused Planning

For historic properties, we coordinate sensitive restoration approaches that respect original materials, structure, and architectural legacy. We help you retain the soul of the space while making it livable and lasting.

We don’t just build, we preserve what matters.