Independent by design · Chicago, Illinois

Structures that stand up to the next hundred years.

Structural and building enclosure engineering for architects, owners and builders across the Midwest.

Built for the long view

34 engineers
Chicago · Midwest · 14 states

Good engineering is not a layer added to a building. It is the quiet logic that lets architecture become useful, durable and generous. We bring structure and enclosure together, from first sketch to the last site question.

412
Completed projects
26
Years of practice
14
States licensed

What we do

One building.
A connected practice.

Structural engineering

We make clear, buildable structural systems that give architecture room to work. From early massing through construction, our engineers stay close to the decisions that shape a building.

Building enclosures

Our enclosure team brings structure, air, water, thermal performance and durability into one conversation—so the exterior performs as thoughtfully as it looks.

Mass timber

We help project teams turn timber ambition into a coordinated, code-compliant building system, with practical attention to vibration, connections, fire strategy and carbon.

Seismic & retrofit

We assess what is already there, then strengthen with precision. Our retrofit work balances life safety, constructability, budget and the value of keeping a building in use.

Forensic investigation

When a building behaves unexpectedly, we combine measured field work with structural judgment to find the cause, explain the risk and lay out a useful path forward.

Selected work · 1998—2025

The work speaks
for itself.

A refined residential tower rising above a Chicago street in late afternoon light
Residential towers2022
Ashland House
Chicago, IL
Architect: Northbank Atelier
42 stories / 136 m
A 1920s brick warehouse carefully adapted with new steel and glass insertions
Adaptive reuse2021
Foundry Works
Chicago, IL
Architect: Common Ground Design
3,200 m² retained

People who stay close

Small enough to listen.
Deep enough to deliver.

Kessler Ward is a 34-person practice built around direct access, thoughtful debate and continuity from first conversation to final walk-through.

Founded in Chicago in 1998 by Dana Kessler and Arjun Ward, we bring senior attention to the details that matter.

Founding principal

Dana Kessler

Principal · Structural Engineering
PE · SE · IL, WI, IN

Dana leads structural design with a focus on adaptive reuse, higher education and resilient public buildings. She believes the best systems are easy to understand and rewarding to build.

Founding principal

Arjun Ward

Principal · Building Enclosures
PE · SE · IL, MI, MN

Arjun brings structure and enclosure into the same room early. His work centers on high-performance facades, careful detailing and buildings that stay dry, safe and useful over time.

Principal

Mina Patel

Principal · Mass Timber & Retrofit
PE · SE · IL, CO, OH

Mina helps teams find the right balance between new material systems and existing buildings. She is known for clear field investigations and practical, low-carbon structural strategies.

Notes from practice

Questions worth
working through.

Structural thinking8 min readMay 2025

What mass timber changes about lateral design

Timber asks the lateral system to be legible in a different way. We look at stiffness, connection slip and the coordination choices that keep a hybrid frame honest.

Explore the work behind the thinking
Existing buildings6 min readFebruary 2025

Retrofitting unreinforced masonry in Chicago

A useful retrofit starts with what the building can tell you. A field-first approach to assessing masonry, choosing interventions and keeping a neighborhood asset in use.

See a careful reuse in practice

Careers at K/W

Make thoughtful work
with good people.

We are a collaborative, technically curious team who care about the craft and the people who use what we design. Here, early-career engineers learn directly from principals, and experienced engineers get room to shape the work.

Our Chicago studio supports flexible schedules, licensure and continuing education. We welcome people with different paths into the building industry.

Introduce yourself

Let’s make something last

Start a project.

Tell us what you are working on, where you are in the process and what questions are already on the table. A principal will get back to you directly.

Chicago office
205 W Wacker Drive, Suite 1200
Chicago, IL 60606
Call the studio
+1 312 555 0198
Studio hours
Monday–Friday · 8:30 am–5:30 pm CT

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