Miller Architects

What Miller Architects does

Miller Architects is a privately held architecture and development firm headquartered in Oklahoma City, Oklahoma, founded in 1994. The firm delivers integrated services across four practice areas: Architecture, Development, Interior Design, and Master Planning, serving enterprise and government clients primarily in healthcare, public/civic, commercial/corporate, and development sectors. The integrated model combines architectural design with developer discipline, supported by a $300M commercial development portfolio that informs site selection, investment strategy, and lifecycle cost awareness across engagements.

The firm's go-to-market is project-based and relationship-driven, with repeat clients representing the majority of business and new work sourced through industry referrals, portfolio marketing, and demonstrated sector expertise. Notable enterprise engagements include healthcare facility design for SSM Health, Saint Francis Health System, and Owensboro Health System; education projects for Oklahoma State University, University of Central Oklahoma, and University of Oklahoma; civic work for Oklahoma City Public Schools and Oklahoma County; and commercial headquarters for Heartland Payment Systems (now Global Payments), Regent Bank, and ANCE Capital Group. The firm operates with a 15-person team led by CEO Darin Miller, with named directors across Operations, Design, Development, and Specifications/QA. The technology stack consists of standard architectural design software and integrated project delivery methodologies; there is no proprietary technology, app, API, or AI/ML capability disclosed. The firm has delivered 1,000+ projects over three decades and has received AIA and ULI recognition, including a 2024 AIA Citation Award for Healthcare Architecture.

Miller Architects generates revenue through professional fees negotiated per engagement, with project scope, complexity, and duration determining pricing. Distribution is direct enterprise sales with regional scope across Oklahoma and Kentucky. Marketing relies on a portfolio website organized by sector with project case studies. The firm has no external funding, no parent company, no subsidiaries, and no disclosed financial information, operating as an independent, founder-led professional services practice.

Name

Miller Architects

Legal name

Miller Architects

Website

https://millerarch.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

51–100 employees

Short description

Miller Architects is a privately held Oklahoma City-based architecture and development firm founded in 1994, providing integrated architecture, development, interior design, and master planning services to enterprise healthcare, public, commercial, and development clients across Oklahoma and Kentucky.

Ownership category

akta.pro rank

Product category

Architectural Services

NAICS

Architectural Services (54131), Interior Design Services (54141)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industry

Interior Design Services (BPAHAKAB)

Keywords

• Architecture design services
• Interior design services
• Master planning services
• Healthcare architecture
• Commercial development

Headquarters

HQ city

Oklahoma City

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Architecture and Design Services: Professional fees from architectural design services across healthcare, public, commercial, and development sectors. Services include master planning, interior design, and integrated design and delivery from concept through construction.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Miller Architects is an architecture and development firm that delivers integrated architectural design, development, interior design, and master planning services from concept through completion. The firm serves enterprise clients across healthcare, public/civic, commercial, and development sectors, combining architectural design expertise with developer discipline grounded in a $300M commercial portfolio. Services are delivered as project-based engagements that span feasibility, design, and execution.

Product overview

Miller Architects is an architecture and development firm offering integrated services across architecture, development, interior design, and master planning. Their core service offerings work together as a unified practice: Architecture Services provides the foundational design expertise; Development Services brings developer discipline with a $300M commercial portfolio; Interior Design shapes internal environments; and Master Planning coordinates large-scale multi-building strategies. The firm specializes in healthcare (hospitals, imaging facilities, medical offices, emergency departments), commercial (workplace, retail, mixed-use), and public/civic architecture projects. Their integrated approach combines development and architecture under one team, allowing real-time coordination between design, budgeting, and constructability.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture Services

Quantifiable outcome

• SSM Health Shawnee Primary Care project completed ahead of schedule and ~10% under budget with a final cost of $8.45 million
• +2 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Perkins&Will: Global architecture firm with a deep healthcare practice (hospitals, medical office buildings, ambulatory care), directly competing with Miller for healthcare commissions and sharing an integrated architecture + interiors delivery model.
• HKS: One of the largest U.S. healthcare architecture firms, with comparable hospital, ED, and ambulatory design expertise; competes for the same enterprise health system clients Miller serves.
• CannonDesign: Integrated design firm with strong healthcare and higher-education verticals, offering architecture, interiors, and planning services under one team, structurally similar to Miller's integrated delivery model.
• SmithGroup: Integrated architecture, engineering, interiors, and planning firm with healthcare, higher education, and workplace practices that overlap directly with Miller's verticals and service mix.

Broad incumbents

• HOK: Large global architecture incumbent with healthcare, civic, and workplace practices; competes for larger institutional commissions Miller targets but at a much broader scale.
• HDR Architecture: Architecture and engineering parent with a major healthcare facility design practice; competes in the same hospital and ambulatory segments as Miller, though as a much larger diversified firm.

Regional players

• Page (Page Southerland Page): Texas-based integrated architecture, engineering, and interiors firm with healthcare, higher education, and civic practices; comparable in size and service mix, competing in adjacent Sun Belt geographies.
• Rand Elliott Architects: Oklahoma City-based architecture firm where Miller's principal Mike Mays previously worked; comparable regional scale and Oklahoma-based portfolio, sharing many of the same healthcare and civic clients.
• GH2 Architects: Oklahoma-based architecture firm with education, civic, and healthcare projects; competes for the same state-level institutional clients in Miller's core Oklahoma market.
• FSB (Finkleburg, Strzelecki & Branch): Oklahoma City architecture and engineering firm with civic, education, and healthcare expertise; a like-sized regional peer competing for Oklahoma institutional work.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/millerarchokc

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 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 Miller Architects