Architecture Firm in San Francisco

Treanor’s San Francisco office brings together a dedicated team of architects, planners, and preservation experts focused on shaping places that matter—past, present, and future. As a highly regarded architecture firm in San Francisco, our work centers around three core practice areas: historic preservation, healthcare, and site planning.

With deep roots in the Bay Area and a commitment to design excellence, our team serves clients throughout California and the West Coast with thoughtful, context-sensitive solutions that honor the region’s history, respond to community needs, and prepare for what’s next.

As a city rich with architectural diversity and layered history, San Francisco is the ideal home base for Treanor’s team of historic preservation architects. We collaborate with public agencies, academic institutions, and private developers to restore and adapt buildings that reflect the cultural, civic, and architectural story of the region.

Some of our preservation services include:

• Condition assessments and feasibility studies
• Historic structure reports and design guidelines
• Full restoration and adaptive reuse
• Integration of accessibility, life safety, and modern systems
• Local, state, and federal compliance (including CEQA and Secretary of the Interior’s Standards)

From civic landmarks and university campuses to legacy housing and cultural institutions, our team brings a nuanced, research-based approach to preserving the integrity and extending the life of historic buildings. In a city where preservation is both a challenge and a necessity, Treanor’s San Francisco office is a trusted guide for sustainable and meaningful revitalization.

Treanor’s San Francisco team includes highly experienced healthcare architects who specialize in designing environments that support healing, operational efficiency, and community wellness. We partner with public and private health systems, behavioral health providers, and non-profit care organizations to deliver high-performing facilities that improve lives.

Our healthcare architects specialize in:

• Acute care hospitals
• Critical access hospitals
• Multi-specialty medical buildings
• Skilled nursing facilities
• Surgery centers
• Behavioral health
• Urgent care
• Cancer care
• Pediatric
• Orthopedic

Our approach to healthcare design balances technical excellence with a deep understanding of the human experience. We prioritize daylight, intuitive wayfinding, safety, and flexibility—creating spaces that feel calm, inclusive, and future-ready.

A strong sense of place starts with a strong foundation. Treanor’s San Francisco office features collaborative site planning services supported by landscape architects and civil engineers.

Some of our site planning services include:

• Grading, drainage, and stormwater management
• Campus and district planning
• Circulation and parking strategy
• Outdoor learning, healing, and gathering spaces
• Planting design and sustainable infrastructure

From healthcare campuses and institutional sites to historic properties and urban infill projects, we design landscapes and site systems that support wellness, environmental performance, and connection to community.