AT6 Architecture + Design Build
AT6 Architecture + Design Build is a San Francisco-based, architect-led design-build firm founded in 2005 that delivers remodels, renovations, additions, and custom homes for Bay Area homeowners, holding dual California architectural and general contractor licenses.
- Company typePrivate
- Founded2005
- HeadquartersSan Francisco, United States
- Headcount1–10
- GTM typeB2C
- OfferingServices
What AT6 Architecture + Design Build does
AT6 Architecture + Design Build is a privately held, San Francisco-based architect-led design-build firm founded in 2005 that integrates full-service residential architecture (feasibility studies, design development, permitting, consultant coordination) with licensed general contracting (pre-construction planning, value engineering, project management, craftsmanship oversight) under a single accountability structure. The firm holds both California Architectural License #C-28796 and California General Contractor License #B-283485, an unusual dual credential concentrated in founder and president Jason Langkammerer, and operates with a small in-house team (1-10 employees) supplemented by vetted subcontractors and project-based partners across engineering, interior design, and photography.
The firm targets high-end residential customers in the San Francisco Bay Area (San Francisco, Marin County, and the East Bay, including Berkeley, Piedmont, Lafayette, Mill Valley, Alameda, and more recently Plymouth in Amador County), delivering remodels, additions, whole-house renovations, and ground-up custom homes. Its differentiation rests on architect-led (rather than contractor-led) design-build, single-point accountability, and a stated track record of on-time, on-budget delivery — multiple disclosed projects were completed within 5% of original budget on multi-million-dollar builds.
AT6 makes money through professional-services fees on a project-based quoting model with multi-year contract cadence; pricing is not publicly disclosed. The go-to-market is sales-led and direct-to-consumer, with demand generated primarily through an extensive portfolio, repeat-client relationships spanning 10+ years, word-of-mouth referrals, earned media in publications including Remodeling Magazine (Big50 Class of 2019), SPACES, California Home & Design, SF Chronicle, Fine Homebuilding, and Curbed SF, and active social channels across Instagram, Facebook, Houzz, Pinterest, and LinkedIn.
AT6 Architecture + Design Build firmographics
Firmographics- Name
- AT6 Architecture + Design Build
- Legal name
- AT6 Architecture + Design Build
- Website
- https://at6db.com
- Company type
- Private
- Founded year
- 2005
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- AT6 Architecture + Design Build is a San Francisco-based, architect-led design-build firm founded in 2005 that delivers remodels, renovations, additions, and custom homes for Bay Area homeowners, holding dual California architectural and general contractor licenses.
- Ownership category
- akta.pro rank
AT6 Architecture + Design Build industry classification
Industry- Product category
- Residential Architecture and Design-Build Construction Services
- NAICS
- Architectural Services (54131), Residential Remodelers (236118), Residential Building Construction (23611), Interior Design Services (541410)
- SIC
- General Bldg Contractors - Residential Bldgs (1520), Construction - Special Trade Contractors (1700)
- akta.pro primary industry
- Architectural Design Services (BPAHAKAA)
- akta.pro secondary industries
- Residential Design-Build & Renovation-Integrated Builders (IMAFABAE), Design-Build / EPC General Contracting (IMAFAAAD), Interior Design Services (BPAHAKAB)
Keywords
Where AT6 Architecture + Design Build is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
AT6 Architecture + Design Build business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Architecture Services: Full-service residential architecture including feasibility studies, design development, permitting, and construction administration for remodels, renovations, additions, and custom homes.
- Construction Services: Licensed general contractor services including pre-construction planning, value engineering, project management, and craftsmanship oversight through in-house staff and qualified subcontractors.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based professional services for residential architecture and construction |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
AT6 Architecture + Design Build product offering
Product offeringCore offering
AT6 Architecture + Design Build is an architect-led design build firm that pairs a full-service residential architecture practice with an in-house general contracting team. It delivers integrated remodels, renovations, additions, and custom new homes across the San Francisco Bay Area, leading both the design and build phases from conception through project completion under a single point of accountability.
Product overview
AT6 Architecture + Design Build is an architect-led design build firm offering integrated residential architecture and construction services. Their core offering combines full-service architecture (feasibility studies, design development, permitting) with in-house general contracting to deliver remodels, renovations, additions, and new custom homes. The four main service lines—Architecture Services, Construction Services, Home Remodeling, and Custom Homes—work as an integrated design-build model where the same team leads projects from initial concept through construction completion.
Differentiator
Problem solved
Functional benefit
Products and services
- Architecture Services Full-service residential architecture including feasibility studies, design development, permitting, and consultant coordination for remodels, renovations, additions, and new custom homes throughout the Bay Area. Targeted at Bay Area homeowners seeking integrated design and construction services.
- Construction Services
Quantifiable outcome
- Projects completed on-time and on-budget
- +2 more outcomes
Companies that use AT6 Architecture + Design Build
Customer profileNamed customers18 records
Segments2 records
Ideal customer profiles2 records
AT6 Architecture + Design Build technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AT6 Architecture + Design Build partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered minor.
- Studio BBAminorStudio BBA provided construction administration and interior design services for the Noe Valley Ground Up environmentally-friendly infill home project in San Francisco.
- Moroso ConstructionminorMoroso Construction served as the Architect of Record for the Noe Valley Ground Up project, working in collaboration with AT6's design-build services.
- Todd Powers (Contractor)minorTodd Powers served as the contractor for the Berkeley Cube project, contributing to the modern addition construction.
- Nystrom DesignminorNystrom Design provided interior design services for the Modern Edwardian Noe Valley project.
- Lunghi Media GroupminorReal estate photography services for client stories and project documentation.
- Ethan Gordon PhotographyminorFamily portrait photography services for client story features.
- Eric Rorer PhotographyminorArchitectural photography services for the Craftsman Refresh San Francisco project.
Scale indicators2 records
Recent moves7 records
Expansion highlights4 records
AT6 Architecture + Design Build competitors and assessment
Company assessmentDirect peers
- Feldman Architecture: San Francisco-based residential architecture firm serving Bay Area homeowners on remodels, additions, and custom homes at the high end of the market. Directly comparable in geography, customer segment, and project types (remodels, modernizations, custom builds) to AT6.
- Redhorse Constructors: Bay Area general contractor offering design-build residential remodeling and custom home construction. Comparable in integrated design-build model and Bay Area high-end residential customer base.
- Aidekman & Associates: San Francisco architecture firm specializing in residential remodels, additions, and custom homes. Directly comparable in Bay Area geography and high-end residential remodel/addition service offering.
- Swatt Architects: Bay Area architecture firm specializing in custom homes and residential work, including remodels and modern updates. Comparable in product type, geographic market, and emphasis on design-led residential execution.
- Studio Becker: Bay Area design-build firm offering integrated architecture and construction services for residential remodels and custom homes. Closely mirrors AT6's integrated delivery model and high-end Bay Area homeowner customer base.
- John Lum Architecture: San Francisco architecture firm focused on modern residential design including remodels and additions. Comparable in Bay Area geographic focus and high-end residential remodel/addition product.
- YA Remodeling & Construction: Bay Area design-build remodeling firm serving homeowners on kitchen, bath, and whole-home renovations. Comparable in integrated design-build delivery and high-end Bay Area residential remodeling customer segment.
- ENZO Design Build: California design-build firm offering integrated architecture and construction for residential remodels and additions. Comparable in business model (single design-build team) and California homeowner target segment.
- Total Concepts: Bay Area design-build remodeling company offering architecture-integrated home renovation services. Comparable in integrated design-build delivery and Bay Area homeowner customer segment.
Regional players
- Hendricks Architecture: Northern California architecture firm specializing in residential and custom home design across the Sacramento and greater Northern California region. Comparable in residential architecture service offering but with a different core geographic footprint than AT6's Bay Area focus.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights5 records
Customer concentration
AT6 Architecture + Design Build social profiles
Digital presenceAT6 Architecture + Design Build compliance and trust
Trust signalCompliance2 records
AT6 Architecture + Design Build financial estimates
Financial estimateRevenue estimate
Valuation estimate
AT6 Architecture + Design Build leadership team
Management profileNumber of profiles
Profiles8 records
AT6 Architecture + Design Build funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
AT6 Architecture + Design Build M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about AT6 Architecture + Design Build
What does AT6 Architecture + Design Build do?
AT6 Architecture + Design Build is an architect-led design build firm that pairs a full-service residential architecture practice with an in-house general contracting team. It delivers integrated remodels, renovations, additions, and custom new homes across the San Francisco Bay Area, leading both the design and build phases from conception through project completion under a single point of accountability.
Is AT6 Architecture + Design Build a public or private company?
AT6 Architecture + Design Build is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was AT6 Architecture + Design Build founded?
AT6 Architecture + Design Build was founded in 2005. It employs 1 to 10 people.
Where is AT6 Architecture + Design Build based?
AT6 Architecture + Design Build is headquartered in San Francisco, United States, in the North America region.
How does AT6 Architecture + Design Build make money?
Two revenue lines are on record. Architecture Services are the primary driver. The others are construction Services.
Who are AT6 Architecture + Design Build's main competitors?
Direct peers on record are Feldman Architecture, Redhorse Constructors, Aidekman & Associates, Swatt Architects, Studio Becker, John Lum Architecture, YA Remodeling & Construction, ENZO Design Build and Total Concepts. Hendricks Architecture is listed as a regional player.
Does AT6 Architecture + Design Build have an API?
No public API is recorded for AT6 Architecture + Design Build.
What industry is AT6 Architecture + Design Build in?
AT6 Architecture + Design Build's product category is Residential Architecture and Design-Build Construction Services. Its primary akta.pro industry code is BPAHAKAA, Architectural Design Services, with a secondary code of IMAFABAE, Residential Design-Build & Renovation-Integrated Builders. Its NAICS code is 54131 and its SIC code is 1520.