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Business Details
46 Years
experience
Award-Winning Architecture & Interior Design Services
Founded in 1980 by Mark Stumer and Thomas Mojo, our firm has been at the forefront of modern architecture and interior design for over four decades. Our interdisciplinary team combines technical expertise with creative vision to deliver innovative, client-focused solutions. We maintain a hands-on approach, with principals directly overseeing every project phase from conceptualization to completion. Our practice emphasizes leadership, technological innovation, and a commitment to timeless design that meets functional and budgetary requirements.

With a diverse portfolio spanning residential, commercial, and institutional projects, we bring extensive experience in creating spaces that balance aesthetic excellence with practical execution. Our team's longevitymany members have been with the firm for over 35 yearsensures consistent quality and deep institutional knowledge. We integrate specialized consultants in engineering and landscape architecture to provide seamless, comprehensive services for every project.
Services
Residential Architecture Commercial Office Design Interior Design Educational Architecture Retail Interior Design Healthcare Architecture Spa Design Religious Architecture
Details
  • Year established: 1980
Highlights and features
  • We offer over 40 years of experience in modern architecture and interior design
  • Our principals oversee every project phase from conceptualization to completion
  • We integrate technical expertise with creative design solutions
  • Our team includes licensed architects with multiple state registrations
  • We maintain long-term client relationships through consistent quality delivery
Services
Residential Architecture
We create custom residential spaces that blend modern aesthetics with functional living requirements. Our approach focuses on maximizing natural light, optimizing spatial flow, and incorporating sustainable materials. With experience in luxury homes across Long Island and Manhattan, we deliver designs that reflect each client's unique lifestyle while maintaining architectural integrity.
Commercial Office Design
Our commercial office designs balance brand identity with operational efficiency. We specialize in creating workspaces that enhance productivity while reflecting corporate values. From modern corporate headquarters to adaptive reuse projects, our solutions integrate technology infrastructure, flexible layouts, and sustainable design principles to meet evolving business needs.
Interior Design
We provide comprehensive interior design services for both residential and commercial clients. Our team focuses on creating cohesive environments through material selection, lighting design, and custom millwork solutions. We maintain continuity between interior spaces and architectural elements while addressing specific functional requirements for different building types.
Educational Architecture
Our educational facilities combine modern aesthetics with pedagogical functionality. We design learning environments that support contemporary teaching methods while prioritizing safety and accessibility. Our experience includes K-12 schools, university buildings, and specialized learning centers that balance durability with inspiring spatial design.
Retail Interior Design
We create retail environments that enhance customer experience while optimizing operational efficiency. Our designs focus on brand storytelling through spatial organization, lighting strategies, and material selections. From boutique spaces to large-scale commercial centers, we develop solutions that balance aesthetics with practical retail requirements.
People
Mark D. Stumer
Principal
Co-founder with over 45 years of architectural experience, leading design direction and client relations. Graduated from Pratt Institute in 1974 and registered architect since 1979. Active in architectural education and community planning initiatives.
Joe Yacobellis
Senior Associate
Licensed architect with extensive experience in commercial and residential projects. Oversees design development and client coordination. Previously practiced in New York, Boston, and Honolulu with expertise in international master planning projects.
Jessica Licalzi Kurzyna
Senior Associate
Interior design specialist with experience in corporate and residential projects. Graduated from NYIT in 2007 and has been with the firm since 2007. Focuses on functional design solutions that meet client-specific requirements.
Mike Doyle
Senior Associate
Licensed architect since 1985 with experience in high-end residential and commercial projects. Manages project teams and oversees technical execution. Graduated from NYIT with a Bachelor of Architecture in 1980.
George Luis Cumella
Project Manager
Licensed architect with over 20 years of experience in residential and institutional projects. Oversees project execution from design through construction. Previously worked on cultural projects including museums and public libraries.
Questions
What architectural styles does Mojo Stumer specialize in?
We specialize in modern and contemporary design while adapting to client preferences. Our portfolio includes Hamptons-style residences, luxury urban townhouses, and innovative commercial buildings that prioritize functionality and aesthetic innovation.
How does the firm approach client collaboration?
Each project has a dedicated principal who works directly with clients throughout all phases. We maintain regular communication through design reviews, budget updates, and construction progress meetings to ensure alignment with client objectives.
What project types does Mojo Stumer handle?
We work on residential (luxury homes, multi-family housing), commercial (office buildings, retail spaces), institutional (schools, cultural centers), and healthcare projects. Our team has experience with new construction and renovation projects.
How does the firm ensure project quality?
We implement rigorous quality control through experienced project managers who oversee technical accuracy, construction documentation, and site supervision. Our team includes licensed architects and LEED-certified professionals.
What geographic areas do you serve?
While based in New York, we work on projects throughout the Northeast region including Long Island, Manhattan, and the Hamptons. We also collaborate on select national and international projects through virtual coordination.
How long has Mojo Stumer been in business?
The firm was founded in 1980 by Mark Stumer and Thomas Mojo. We have maintained continuous operation for over four decades with many team members having 35+ years of tenure.