We offer creative, open-minded clients the Design-Build services they need to build an inspired home.


We offer creative, open-minded clients the Design-Build services they need to build an inspired home.

Make Your Vision a Reality

LETTER FOUR brings together an all-star cast with proven success helping properties reach their full potential, both planning and creating breathtaking homes. The service you receive is backed by years of hands-on experience in all things architecture and construction. Our expert staff will diagnose the right approach for your project through careful evaluation of lot conditions and constraints. We then prioritize your ideas and strategize to find the very best design option based on what you value. Your project is managed with careful attention to detail at all stages, ensuring your budget, timeline, and goals are top priorities throughout the design and building process.

Lauren and Jeremy

LETTER FOUR is led by our Principals, Lauren Adams and Jeremy Baker. Both grew up working on their family’s homes, creating beautiful, meaningful dwellings with a personal touch. They each desired to apply their expertise to greater challenges, motivating them to move to the city of endless possibilities: Los Angeles.

This dynamic duo finally met in 2008, when a mutual friend connected them for collaboration on a project in Beverly Hills. After cooperating on more luxury builds, the two teamed up to establish LETTER FOUR in 2010. Their goal was to offer a completely turnkey Design-Build service to residents seeking a clear, collaborative, and deeply personalized home-building experience - one that's streamlined by having a single team on board from start to finish.

Lauren and Jeremy structured their firm differently from most in the industry, creating a true 50/50 owner-partnership. Where other firms hire out for architecture or contracting services, LETTER FOUR’s business model relies on in-house collaboration. Operating on these terms holds our team fully accountable for every project, driving us to deliver the highest level of service and craftsmanship to our clients.

Our Values

  1. Client-Centered. We approach your project with a service philosophy that puts you right at the center, delivering a positive experience through fairness, transparency, respect, and open communication.
  2. Accountability. We provide you with one point of contact for maximum project accountability, from start to finish.
  3. Process-Driven. We follow detailed, well-developed processes for everything we do, which are proven to deliver the best results for your unique needs and goals. All of this is done while staying true to budget, schedule, and the quality of design and construction.
  4. People. We aim to be responsible contributors and allies to our neighboring community, and to support our invaluable team with a culture that invests in their opportunities and well-being.

We are built for this

All of your needs are covered at LETTER FOUR. We built our firm to address all aspects of custom home building and renovation under one roof, from design conceptualization, all the way to the final walkthrough.

We do this by offering complete licensed Architecture and General Contracting services as one standalone business. You get a single team capable of carrying out your project to the very end. Our experts will guide you through every step, providing the insights needed to produce inspiring designs, masterful construction, and a perfectly streamlined workflow. Through our holistic framework, you’ll enjoy a process that keeps project coordination simple and effective. No worries, no confusion - just clarity and peace of mind.

Our Services

Meet Our Team

Lauren Adams AIA, NCARB

Architect / Co-owner

As the daughter of a carpenter and an artist, creating beautiful homes is an innate calling for Lauren. She grew up helping her parents do hands-on remodeling work in their family homes as a child, which solidified her desire to become an architect. After college and a year working in Boston, Lauren drove across the country to join the LA architecture scene in 2002. This early start has given her more than 20 years of hands-on experience designing luxurious residences in the greater LA area. Lauren earned her Bachelor of Architecture at Cornell University, becoming a licensed architect at the mere age of twenty-six. She knew that she wanted her own firm, a place where she could pursue meaningful projects and provide a dedicated, personalized design experience that’s not achievable in a large corporate office. This led her to found Letter Four with Jeremy, where she leads our architectural design team. Lauren strives for close collaboration with clients who want to push the boundaries of design, helping them explore new possibilities and find imaginative yet practical solutions for homes that are truly unique. With her at the helm, there’s nothing out of reach for our creative, big-dreaming clients.

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Jeremy Baker

General Contractor / Co-owner

Jeremy is an expert builder who has spent his entire life immersed in the art of constructing homes. He learned the ropes at an early age alongside his grandfather, a master carpenter. This life-changing mentorship instilled in Jeremy the value of craftsmanship. His grandfather taught him to never compromise on the quality of his work, and to embrace design as a key tool. These lessons were carried with Jeremy as he set out to grow his own career, with the goal of delivering clients a superior home building experience. This mission ultimately drove him to partner with Lauren, founding LETTER FOUR to build immaculate homes across Los Angeles. He has spent these 20+ years growing his mastery of construction and project management, even learning the principles of design to help him deliver breathtaking builds. Jeremy now leads the General Contracting team, where he helps clients plan their way toward beautiful homes that enhance their lifestyles. His talent shines brightest when collaborating with team-oriented clients who want to build something special, with an appreciation for a personal touch and artisan skill.

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Nicole Sugihara

Architectural Project Manager

Nicole is the all-star who keeps the architectural aspects of our projects masterfully coordinated. She is a key figure in maintaining constant communication with our clients and dispatches weekly updates. On any given day, you can find her collaborating with consultants, developing drawing sets, or submitting and reviewing drawings with city officials for building permits. She takes the reins of management to ensure that the design stage progresses smoothly and projects are ready to begin construction. Nicole began building her expertise at the prestigious Cal Poly, San Luis Obispo, where she earned her Bachelor of Architecture. As a student, she lent her skills to boutique architecture firms and custom steel fabricators, giving her unique insights into the nuts and bolts of the built environment. Her mind for both the practicalities and artistry of architecture helps her see the big picture when strategizing project advancement. Nicole is a recently licensed architect and member of the AIA.

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Jessica Tien

Senior Job Captain

Jessica is a do-it-all powerhouse. She helps us manage all of the technical aspects of our projects, from guiding due diligence research and managing our firm's softwares, to keeping our clients informed, coordinating permit approvals, and much more. Jessica employs her Revit skills to build well-detailed 3D models of our clients’ homes, and stays on top of all changes to building, zoning, and other codes that affect project requirements. With her on the job, our clients get peace of mind knowing that every detail of their design will be accounted for. Jessica’s dedication comes from a life which was destined for this business. She received the “Most Likely To Become An Architect” award as a 6th-grader, and later went on to study architecture at the University of Southern California. Jessica stayed on with the USC Architectural Guild, serving several years as Chair of the Emerging Professionals Committee. This role helped her broaden her knowledge of industry developments, giving her an insider’s understanding of how architecture is evolving. She’s highly involved in the construction administration phase of our projects, making sure that questions from the field are answered with a design eye and every construction detail is communicated to the construction team successfully.

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Senior Job Captain

After establishing an accomplished career as a licensed architect in Dublin, Ireland, Jenny recently crossed the pond to make her mark on the American industry. She sees Southern California as being ripe with opportunity for new and interesting projects that allow her to explore progressive, statement-making design. Jenny plays a critical role on our team, contributing her unique experience, style, and skills to all phases of our projects. She not only lends her vision to creating groundbreaking design concepts, but also handles all of the practicalities necessary to ensure our clients see their homes built exactly as they’ve dreamed. She has been instrumental in helping our clients understand design concepts and direction in the early phases of our projects. Jenny is a creative thinker and has a thorough understanding of the technical and construction needs of our projects.

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Construction Project Manager

We count on Emmet to steer our projects through the construction phase with smart planning and innovative solutions. He brings an invaluable perspective to the role of Construction Project Manager thanks to a long and distinguished background in architecture. After obtaining a Bachelor in Fine Arts, Sculpture, from the University of Washington, this Seattle native later earned his Masters in Architecture from UCLA and became a CA licensed general contractor (B). This has made him uniquely qualified to steward the projects here at our Design-Build firm, where both architecture and construction are closely integrated. Emmet excels at communicating with both tradespeople and clients, optimizing our workflow and ensuring everyone’s voice is heard and needs are met.

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Bonnie Duprey

Construction Administrative Assistant

Our resident Francophile who pursued a full education in French Language & Studies, Bonnie has always had an explorative mindset. This adventurous streak unexpectedly brought her into the construction industry. She started working for a real estate developer, where she learned the hallmarks of elite properties and what it takes to create them. Bonnie now brings this understanding to her collaboration with Jeremy, our General Contractor, and all of the subcontractors that contribute to our projects. She takes charge of the communication and organization necessary to keep construction progressing smoothly, maintaining a firm grasp on all details relating to pricing, scheduling, and inspections. She’s the one to update clients on construction developments and deliver a clear, worry-free experience for every residential project.

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Amina Tornqvist

Interior Designer

Born in the land of lagom, Amina’s Swedish upbringing gave her an intuitive sense for well-balanced design. She cultivated this natural talent at San Francisco State University, where she earned a Bachelors of Science in Interior Design. Now, as our in-house Interior Designer, Amina helps our clients make their new home feel like the perfect representation of their personal style. From gathering inspiration imagery and material samples, to walking clients through fixture and furnishing selections, Amina provides everything needed for an effective and fulfilling collaboration. She allows our projects to achieve perfect harmony between cozy and fresh, inviting and unexpected, creating spaces that our clients will enjoy for many years to come.

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Alfredo Serrano

Site Foreman

Alfredo is truly a jack-of-all-trades with a wealth of knowledge in all aspects of the construction of our projects, from start to finish. Our team depends on Alfredo to supervise and coordinate the on-site construction work for every home we build. He is an expert carpenter with a specialization in finish work, though he brings more than 25 years of experience to the table as a multi-disciplinary tradesman. His extensive knowledge gives him the insights needed to not only steward all aspects of construction, but to serve as a mentor for our growing team of carpenters. Alfredo is the utmost professional and is consistently requested by our repeat clients for the quality of his work, calm demeanor, and solid communication skills. Working with him, our homeowners get results that exceed expectations, and an experience that couldn’t be more pleasant.

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We have deep knowledge and experience within all areas of residential architecture, interior design and industrial design. Check out our work.