15 Best Architecture Firms in Philadelphia

Magda Green Design LLC is a Philadelphia architectural design and interior design firm working across residential and commercial projects.

The firm brings particular value to projects where design must move alongside zoning and permitting requirements. Its team is described as responsive, organized, and knowledgeable, with careful measurements and clear communication helping keep projects moving efficiently. The approach balances functionality, personalization, and sustainability in homes and workplaces.

JLS Architects is a Philadelphia-based firm specializing in residential and commercial architecture, with particular experience in adaptive reuse, multifamily housing, and mixed-use development. Its work respects existing structures and urban contexts while creating modern, functional spaces.

Projects begin with a conversation about goals, scope, and vision, followed by a tailored service approach. The team emphasizes clear, coordinated, buildable drawings that address budget, code, constructability, and long-term performance, helping reduce uncertainty during construction.

Always by Design focuses on contemporary and modern residential architecture in Philadelphia, with a process built around direct collaboration with homeowners. Ed Barnhart works from the larger vision down to details such as light, materials, circulation and everyday comfort, helping turn an initial idea into a coherent home.

The practice has handled whole-house renovations, additions, decks, solariums, stairways, elevators and new beach homes, including projects with tight sites or distinctive existing conditions. It also provides on-site services and online appointments for clients who want close guidance through design and construction decisions.

Gary Rosard Architect is a small Philadelphia-based design firm focused on comfortable modern homes and integrated interiors. The practice works across renovations, additions, new homes, and carefully considered transformations of existing properties, with close attention to how people will actually live in each space.

The process is notably collaborative: goals, aesthetic preferences, budget, technical constraints, and daily routines all inform the design. Full design services extend from early ideas and permit drawings through the relationship between interior and exterior spaces. A pre-purchase property review can also help buyers assess renovation potential, local restrictions, design options, and likely construction costs before committing to a home.

Brawer Hauptman + Larkin Architects is a Philadelphia architecture practice with a focused portfolio in healthcare, synagogue, church, education and community outreach design. The firm’s specialization makes it a relevant choice for organizations seeking architecture shaped around institutional purpose, community use and specialized program needs.

Tantillo Architecture brings a high-energy, principal-driven approach to architecture and interior design in Philadelphia. The studio develops client-specific solutions shaped by proportion, materiality, light, and the character of each site.

Its experience covers homes, offices, restaurants, hotels, fitness centers, apartment buildings, worship spaces, and public-facing interiors. Services extend from concept design and construction documentation through project administration and closeout, with attention to local zoning, codes, and the practical demands of building across different municipalities.

JacobsWyper Architects is a Philadelphia architecture, planning, and interior design firm working across complex institutional, community, commercial, and mission-critical projects. Its portfolio and practice bring together strategic analysis, planning, design, and execution rather than treating architecture as an isolated phase.

The firm’s process is collaborative and relationship-driven, with close attention to changing project requirements, technical detail, and the culture of the people served. Its mission-critical work includes law enforcement, public safety, and data-storage environments, while its community practice focuses on history, wellness, and long-term public value.

Harman Deutsch Ohler Architecture is a Philadelphia service-oriented architecture and design firm rooted in development. The practice works with property investors, builders, and developers to create custom architecture using cost-effective, readily available materials in distinctive ways.

Open communication and collaboration guide the relationship, from clarifying services for single-family plans to shaping larger investment projects. Its emphasis on practical materials, responsive coordination, and development-aware design makes the firm a natural fit for clients balancing creative goals with feasibility and cost.

Toner Architects provides full-service architecture and interior design for residential, commercial, and adaptive reuse projects in Philadelphia and the surrounding region. The team brings design creativity together with a grounded understanding of construction complexity, project costs, zoning, and buildability.

Services can cover everything from a focused interior decision to a complete design process, including concept development, documentation, project administration, and interior detailing. The firm also helps clients plan future development, navigate zoning or variance processes, and coordinate cohesive spaces from structure through finishes.

Lily Meier Architecture + Design is a Philadelphia architecture firm focused on custom residential projects, from renovations and additions to new homes. Its client-forward process connects design decisions to each household’s lifestyle, budget and goals.

The work is especially attentive to function, flow and the character of existing homes, including Philadelphia row houses. Lily Meier brings an open, conversational style to the process, developing creative options and detailed architectural plans for personalized spaces that feel comfortable as well as considered.

JKRP Architects is a Philadelphia-based, full-service architecture firm serving residential, retail, entertainment and self-storage projects. Its collaborative process carries projects from concept through completion, with attention to design detail, responsive coordination and the needs of the community being shaped.

The firm works on multifamily, mixed-use, adaptive reuse, affordable housing, senior communities, retail centers, restaurants and theaters. Energy efficiency, occupant well-being and resilient design are also part of its approach to creating places that remain useful over time.

Level Nine Architects is a Philadelphia-based architecture firm serving residential, commercial, multifamily, and mixed-use projects. Its process moves from site exploration and feasibility studies through schematic plans, design development, technical documentation, and construction support.

The team is especially useful when zoning, permits, existing conditions, or project coordination create uncertainty. It can prepare plot plans, explain design options, support building-control requirements, coordinate contractors and stakeholders, and help establish a workable construction schedule. A patient, collaborative style keeps the client’s priorities visible as the design develops.

Gnome Architects is a Philadelphia-based architecture and interiors studio specializing in custom residential, commercial, and development projects. The firm works across new construction, major renovations, additions, interior design, and multifamily development, shaping spaces around how people live, work, and move through them.

Its process is notably consultative, with close communication from early design through the practical demands of code, construction, and site conditions. The team has handled complex urban renovations as well as projects in different regional environments, balancing distinctive design with everyday usability and development goals. Thoughtful floorplans and attention to detail are central to the studio’s work.