The Problem

Renovation projects are where mechanical engineering gets hard. And they’re where the consequences of inexperience show up fastest.

New construction is relatively straightforward — you’re working from a blank slate with clear documentation, known conditions, and full access. Renovation work is the opposite. Existing conditions are unknown or poorly documented. Record drawings, if they exist at all, may not reflect decades of modifications. Ceiling cavities are crowded with ductwork, piping, conduit, and structure that nobody mapped. Equipment access paths that worked when the building was empty don’t work when it’s fully occupied and furnished.

Then there are the constraints that don’t show up on drawings. The building has to stay operational during construction. Tenants can’t lose heating or cooling for more than a few hours. Noise and vibration limits apply because people are working on the other side of the wall. Phasing plans have to account for the reality that you can’t just shut everything down and start fresh.

Owners and architects routinely underestimate the complexity of renovation mechanical work, and that underestimation leads to budget overruns, schedule delays, and scope changes that erode trust and add cost. The teams that navigate renovations successfully are the ones that anticipated the problems before they started.

What We Provide

We provide mechanical engineering consulting specifically focused on the challenges of renovation and retrofit projects in existing buildings:

Existing Conditions Assessment — Before design begins, we evaluate the existing mechanical infrastructure: equipment condition, capacity, remaining useful life, distribution routing, controls, and air and water balance. We identify what can be reused, what needs to be replaced, and what constraints the existing conditions impose on the design.

Conceptual & Schematic Design Support — We work with the design team during the early phases to develop mechanical strategies that are realistic given the building’s constraints. This includes system selection, routing studies, equipment sizing, and phasing strategies that account for the realities of construction in an occupied building.

Design Review for Renovation-Specific Issues — We review construction documents with a focus on the things that specifically challenge renovation projects: tie-in points to existing systems, transition details between new and existing work, temporary provisions during phased construction, and coordination between new installations and existing infrastructure.

Construction Phase Support — During construction, we help resolve the unexpected conditions that inevitably surface. Existing conditions that don’t match the record drawings. Routing conflicts that weren’t visible until demolition. Equipment access issues that require creative solutions. The value of having an experienced engineer available during construction to make quick, informed decisions cannot be overstated on renovation projects.

Phasing & Swing Strategy Development — For renovations that must maintain building operations, we develop detailed phasing and swing strategies that keep critical systems running throughout construction. This includes temporary heating and cooling provisions, system isolation plans, and sequenced cutover procedures.

Why Our Background Matters

Renovation work rewards judgment and experience above all else. You have to have seen enough existing buildings to develop an instinct for what’s behind the wall before you open it. You have to know how systems from different eras were designed and built. You have to be comfortable making decisions with incomplete information and adapting when reality doesn’t match the plan.

We’ve spent a career working on both new and difficult renovation projects — the kind where the existing conditions are messy, the constraints are tight, and the path forward isn’t obvious. We’ve learned that the most valuable contribution on a renovation project often happens before design starts: identifying the real constraints, setting realistic expectations, and developing a strategy that accounts for what you know and what you don’t.

Who This Is For

• Building owners undertaking renovations of occupied facilities
• Architects who need a mechanical consultant experienced in navigating existing building constraints
• Facility directors planning phased upgrades to aging mechanical infrastructure
• Construction managers who want to reduce risk on renovation projects by having experienced mechanical engineering support in the field
• Property managers and developers renovating older commercial buildings for new tenants or uses