Business Details
28 Years
experience
Your Trusted Architecture Partner in Boston
Osullivan Architects has been delivering architectural excellence for over twenty-five years. Our firm specializes in residential and commercial projects across New England, combining sustainable practices with innovative design. We pride ourselves on our versatility, handling everything from small home additions to large multifamily developments. Our team excels at navigating complex municipal approval processes and achieving LEED certification. We maintain close client relationships to ensure every project reflects their unique vision and requirements. With decades of collective experience, we provide technical expertise and creative solutions tailored to each project's needs.Our portfolio includes award-winning renovations, historic preservation projects, and modern commercial spaces. We approach each challenge with meticulous attention to detail and a commitment to enhancing communities through thoughtful design. Our expanded management team ensures personalized service while maintaining the highest professional standards. This dedication to quality and client satisfaction continues to drive our success in the architecture industry.
Services
Residential Design
Commercial Architecture
Renovation & Restoration
Sustainable Design
Mixed-Use Development
Details
- Year established: 1998
Highlights and features
- We offer 25+ years of architectural experience across diverse project types
- Our team includes LEED Accredited Professionals for sustainable design
- We maintain personalized client relationships throughout the entire project lifecycle
- Award-winning portfolio featuring historic preservation and modern developments
- Our architects hold licenses in multiple Northeastern states for regional expertise
Associations and certifications
- LEED AP
- American Institute of Architects (AIA)
What people say
Award-winning designs
Excellent client communication
Sustainable solutions
Historic preservation expertise
Creative problem-solving
Services
Residential Design
Creating customized living spaces that balance aesthetics and functionality. Our residential designs range from single-family homes to multifamily developments, incorporating modern amenities while respecting neighborhood character. We specialize in transforming existing structures through thoughtful renovations and additions that enhance livability.
Commercial Architecture
Designing functional commercial environments that support business operations and brand identity. Our expertise includes office buildings, retail spaces, and mixed-use developments that optimize workflow and customer experience. We incorporate sustainable materials and energy-efficient systems to reduce long-term operating costs.
Historic Preservation
Specializing in maintaining architectural heritage while integrating modern requirements. Our preservation work includes structural stabilization, period-accurate restoration, and adaptive reuse projects that extend building lifespans. We collaborate with historical commissions to ensure compliance with preservation standards while meeting contemporary needs.
Sustainable Design
Implementing environmentally responsible solutions throughout the design process. Our LEED-certified professionals create energy-efficient buildings that minimize environmental impact. We utilize passive design strategies, renewable materials, and advanced building systems to achieve sustainability goals without compromising aesthetic quality.
Mixed-Use Development
Creating integrated spaces that combine residential, commercial, and public areas. Our mixed-use designs maximize land efficiency while fostering community interaction. We address zoning challenges and infrastructure requirements to deliver developments that enhance urban environments and support economic growth.
People
David O'Sullivan
Founder and President
Licensed architect with 40+ years of experience in residential and commercial design. Active in Home Builders Association and National Association of Home Builders. Leads firm with commitment to quality and innovation.
Donnie Garrity
Associate Principal
LEED AP professional with 10+ years at Osullivan Architects. Specializes in innovative design solutions and sustainable building practices. Promoted to principal in 2023 for outstanding project leadership.
Erion Nikolla
Associate Principal
AIA member who combines academic expertise with practical experience. Former owner of independent firm before returning to Osullivan Architects as principal. Focuses on technical excellence and design innovation.
Jonathan Stone
Associate Principal
20+ year veteran of the firm specializing in project approvals and construction documentation. Applies deep understanding of architectural styles to create functional spaces that meet client lifestyle needs.
Questions
What types of architectural services do you offer?
We provide full-service architecture for residential, commercial, and mixed-use projects including new construction, renovations, and historic preservation across New England.
How long has your firm been in business?
O'Sullivan Architects has delivered architectural solutions for over 25 years with our founding principal maintaining 40+ years of industry experience.
Do you specialize in sustainable design?
Yes, we have LEED Accredited Professionals on staff and incorporate sustainable practices in all project phases to create energy-efficient, environmentally responsible buildings.
What is your design process?
We begin with client goals assessment, followed by conceptual design, detailed planning, and construction documentation. Throughout, we maintain close collaboration to ensure design integrity and client satisfaction.
Which areas do you serve?
While based in Boston, we work throughout New England including Massachusetts, New Hampshire, Rhode Island, and Connecticut for diverse project types.
