Hisel Flynn Architects

What Hisel Flynn Architects does

Hisel Flynn Architects is a privately held architecture firm headquartered in Lexington, Massachusetts, operating from the top floor of a 200-year-old colonial-era timber-framed building at 17 Waltham Street. The firm is led by principals Dan Hisel (AIA, LEED AP; Yale M.Arch) and Katie Flynn (AIA; MIT M.Arch), supported by a team of approximately five to seven members including an Associate Principal, Project Architect, Project Manager, Project Designer, and Architectural Designer. The firm provides custom architectural design services spanning residential projects (single-family homes, renovations, additions, mid-century modern restorations, guest houses, cabins) and commercial and community projects (office interiors, gallery spaces, industrial structures, adaptive reuse). Its portfolio comprises 40+ named projects, primarily concentrated in Massachusetts cities such as Lexington, Somerville, Belmont, Arlington, Needham, Gloucester, and Boston, with selected projects extending to New York and Montana.

The firm's underlying capabilities are grounded in principal talent, sustainability expertise (LEED AP credentialing), and a design philosophy emphasizing honest use of materials, site responsiveness, and visual connections between interior and exterior spaces. Projects have been recognized with a Progressive Architecture Award and published in dwell, Architecture Magazine, Design New England, and architettura.it. The firm operates without a proprietary technology platform; design tools appear to include conventional rendering software such as Enscape.

Revenue is generated through project-based professional services fees for design, planning, and project oversight, with custom quotes provided per engagement. Distribution is direct: clients engage the firm through referrals, professional network connections, and portfolio-driven inbound interest, with no intermediaries, formal sales process, or disclosed pricing. The firm serves a horizontally segmented client base including residential homeowners, nonprofit organizations, and small-to-mid-market commercial clients.

Name

Hisel Flynn Architects

Legal name

Hisel Flynn Architects

Website

https://hiselflynn.com

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

Hisel Flynn Architects is a small, privately held architecture firm in Lexington, Massachusetts, providing custom residential, commercial, and community design services led by two principals with elite academic credentials and an award-winning portfolio of 40+ projects.

Ownership category

akta.pro rank

Product category

Architectural Design Services

NAICS

Architectural Services (54131), Residential Remodelers (236118), Interior Design Services (54141)

SIC

General Bldg Contractors - Residential Bldgs (1520)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industries

Architectural Reconfiguration & Structural Alterations (HSAPAEAB), Luxury Whole-Home Renovation (High-End Finishes & Custom Build) (HSAPAEAI), Interior Design Services (BPAHAKAB)

Keywords

• Architectural design services
• Residential architecture design
• Commercial architecture design
• Sustainable building design
• LEED certified architecture

Headquarters

HQ city

Lexington

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Architectural Design Services: Custom architectural design services for residential and commercial projects. Revenue generated through project-based fees for design, planning, and project oversight.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Hisel Flynn Architects is a small architecture firm providing custom architectural design services for residential and commercial clients. Their portfolio spans new construction, renovations, additions, gut rehabilitations, adaptive reuse, and sustainable design solutions, including single-family homes, guest houses, commercial offices, community and cultural spaces, and specialized structures such as saunas and recycled-material installations.

Product overview

Hisel Flynn Architects is an architecture firm offering architectural design services. Their core offering consists of residential architecture (single-family homes, renovations, additions, guest houses, cabins) and commercial architecture (office spaces, community facilities, industrial structures). Projects include new construction, gut renovations, adaptive reuse, and sustainable design solutions. The firm's portfolio encompasses 34+ named projects ranging from residential homes to commercial interiors.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services Comprehensive custom architectural design services for residential homeowners and commercial clients, covering new construction, renovations, additions, gut rehabilitations, adaptive reuse, and sustainable design. Projects include single-family homes, guest houses, cabins, contemporary offices, community and cultural facilities, and specialized structures. Clients are served through direct engagement with the firm's principals and project team.

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Five partnerships are on record, tiered core and minor.

• Jones ArchitecturecoreStrategic or Co-development PartnerDHA collaborated with Jones Architecture on the RAW Art project. Jones Architecture acted as Architect of Record while DHA provided site analysis, consulting, and design strategy for the gallery expansion.
• RAW ArtcoreStrategic or Co-development PartnerCollaborative relationship with RAW Art nonprofit organization for youth arts programming space. DHA provided design services and consulting for much-needed expansion, growing west into the building next door.
• Home ReSourceminorStrategic or Co-development PartnerNonprofit recycled building materials organization in Missoula, MT. DHA designed The Fencade project drawing from specific stockpile of donated materials. Built with Home ReSource employees and volunteers.
• Jane MessingerminorStrategic or Co-development PartnerClient for Orchard Keeper's House project in Somerville, MA. A unique double lot with beautiful orchard where the new design seeks to unify the home with its landscape.
• D&COminorStrategic or Co-development PartnerCollaborated with D&CO on the Ardelyx vibrant office space design in Waltham, MA.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Regional players

• NADAAA: Boston-based studio led by Nader Tehrani (MIT faculty), working across residential, academic, and cultural projects; comparable design pedigree and academic affiliation overlap.
• Bruner/Cott & Associates: Boston architecture firm with strong residential, adaptive reuse, and cultural portfolio; somewhat larger than Hisel Flynn but operates in the same regional market with overlapping client types.

Direct peers

• Lake|Flato Architects: Sustainability-forward residential and small commercial architecture firm with comparable portfolio scale, environmental focus, and emphasis on site-responsive design.
• Touloukian Touloukian Architect: Small Boston-area practice emphasizing contemporary residential and small commercial design with sustainability focus; nearly identical firm profile in terms of size, geography, and design philosophy.
• Olson Kundig: Design-led, publication-recognized firm specializing in custom residential and small-scale commercial projects with strong material and sustainability narratives; very similar brand positioning and project typology, though based in Seattle.
• Hacin + Associates: Boston-based architecture and interior design practice of comparable size, with a similarly design-forward portfolio spanning high-end residential, commercial interiors, and adaptive reuse. Directly comparable in market, scale, and typology mix.
• Studio B Architecture: Boutique architecture practice working on custom residential and adaptive reuse projects with a sustainability-centered ethos; comparable scale and design sensibility to Hisel Flynn.
• Anmahian Winton Architects: Cambridge, MA studio producing custom residential, institutional, and cultural projects with comparable scale and design-led positioning. Similar geographic focus and project-type profile.

Broad incumbents

• Robert A.M. Stern Architects: Established national firm with significant high-end residential portfolio and academic affiliations (Yale); much larger but competes in the same high-end residential design space that Hisel Flynn targets.
• Payette: Established Boston architecture firm with a broader institutional and science/healthcare portfolio but active in the same regional market and increasingly in high-end residential and adaptive reuse work.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/hisel-flynn-architects

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hisel Flynn Architects