Who We Are

In 1978, Dave established Leff Construction as a sole proprietor. In 1987, his father joined him in the business, and they incorporated as Leff Construction and Development Corp. For a time, Leff Construction was both a general contractor performing new construction and remodeling and a developer of residential infill projects. Eventually, they decided to focus their expertise on new construction and remodeling for residential clients.

Over the years, Dave has learned and applied many different building philosophies and methods, including solar and sustainable building and historical renovation. He is interested in alternative building approaches and has added the best of these into his approach at Leff Design-Build. In 2020 Dave converted the company to a 100% employee owned company via an ESOP.

During the late 1990's, Dave taught "The ABC's of Remodeling" at Santa Rosa Junior College, educating homeowners and contractors about the remodeling process. Dave frequently contributes design-build and construction articles to trade magazines and local newspapers and attends many building workshops and classes.

When he is away from the office, Dave spends the rest of his time hiking with his wife, playing pickleball and golf, and vacationing with his daughters and their young children.

Josh is the expert estimator at LEFF Design Build, where he plays a crucial role in bringing clients' visions to life by developing accurate, transparent budgets for luxury home projects. With a deep understanding of both design and construction, Josh specializes in aligning the client’s goals with cost-effective solutions that maintain the highest standards of quality. His field experience and technical expertise allow him to troubleshoot potential challenges during the planning phase, ensuring seamless execution throughout the build process.

At LEFF, Josh takes pride in fostering strong partnerships with subcontractors and staying ahead of industry advancements. His ability to identify the most durable, high-quality materials ensures that each project reflects lasting value and impeccable craftsmanship. Whether navigating complex budgets or value engineering, Josh’s work consistently delivers a balance of luxury, efficiency, and innovation.

When Josh isn’t focused on creating precise estimates, you’ll find him enjoying the outdoors—mountain biking, hosting lively Dungeons & Dragons game nights, or drumming to his favorite music. His creative pursuits mirror the passion and focus he brings to every project, always striving to achieve the perfect balance between function and beauty.

Dianne is passionate about creating timeless interiors that reflect the unique lifestyle and taste of each client. With years of experience in remodeling high-end bathrooms and kitchens, Dianne has mastered the art of blending aesthetics with functionality, ensuring every space she designs is not only beautiful but also perfectly tailored for daily living.

Her collaborative approach brings clients’ visions to life, curating bespoke designs that capture elegance and sophistication while maintaining warmth and livability. Whether transforming a home into a luxurious retreat or crafting an exquisite entertainment space, Dianne’s attention to detail and understanding of personal style make every project truly exceptional.

In her free time, you’ll find Dianne enjoying the outdoors with family and friends, always seeking inspiration in nature and adventure, paired with great food and meaningful connections.

Jordan brings a sharp eye for detail and a deep understanding of construction management to his role as Project Manager at LEFF Design Build. With a background in civil engineering, Jordan excels at problem-solving and ensuring that each project runs smoothly from start to finish. His commitment to building strong relationships with clients, subcontractors, and the LEFF team ensures that every home he oversees is completed with precision, on time, and to the highest standards of quality.

Jordan’s leadership and attention to detail help bring sophisticated designs to life, ensuring that no detail is overlooked in the pursuit of perfection. His ability to manage complex timelines and execute flawless builds makes him a trusted partner for clients seeking homes that combine aesthetic elegance with practical functionality.

When he's not working, Jordan enjoys following Bay Area sports teams and indulging his tech interests. His enthusiasm for teamwork and precision carries over into his personal life, where he thrives on bringing people together to share in the joy of great accomplishments—both on the field and in the world of luxury home construction.

Jill brings a collaborative energy and steady leadership to her role as Project Manager at LEFF Design Build. With a background in plumbing sales and residential construction, she excels at navigating complex timelines and aligning every moving part of a project with clarity and precision. A strong communicator, Jill builds trusted relationships with clients, trade partners, and team members alike, ensuring every detail is addressed and every phase moves forward with confidence.

Her organizational strength and commitment to excellence make her a natural fit for LEFF’s residential projects, where sophisticated design meets real-world execution. For Jill, the most rewarding part of the job is working shoulder-to-shoulder with a team to bring a shared vision to life.

Outside of work, Jill enjoys spending time with her husband and two children, often exploring the outdoors or relaxing at home together.

Eric is a masterful Lead Superintendent at LEFF Design Build, renowned for his expertise in finish carpentry and his passion for delivering high-end craftsmanship. With a keen eye for detail and a hands-on approach, Eric ensures that every project he oversees is executed to the highest standards. His ability to seamlessly manage complex builds, from start to finish, guarantees that each home is a true reflection of the client’s vision, brought to life with precision and artistry.

Specializing in custom finishes, Eric is deeply involved in the finer details of construction, ensuring that every aspect of the home exudes elegance and refinement. His leadership on the job site, combined with his years of experience, ensures that no detail is overlooked, making him a trusted partner for clients seeking exceptional quality and design.

When not working on creating luxury homes, Eric enjoys relaxing with his wife and dog, embracing the balance between his dedication to work and the importance of creating warm, inviting spaces for families to enjoy.

Mike is a highly skilled superintendent at LEFF Design Build, renowned for his expertise in custom millwork and his commitment to delivering homes of exceptional quality. With years of experience overseeing complex, high-end residential projects, Mike brings a meticulous eye for detail and a passion for craftsmanship to every build. His dedication to clear communication ensures that each project runs smoothly, fostering strong collaboration between the LEFF team, subcontractors, and clients.

Specializing in custom millwork, Mike’s ability to execute intricate, bespoke designs transforms homes into timeless works of art. His leadership on the job site, coupled with his deep knowledge of construction, guarantees that every detail is flawlessly executed, from the initial framework to the final finishing touches.

Outside of work, Mike enjoys hiking and spending quality time with his family. His love for the outdoors and family values informs his approach to homebuilding, ensuring that the spaces he helps create are not only luxurious but also warm and inviting for generations to come.

Lubo is a seasoned superintendent at LEFF Design Build, renowned for his ability to bridge the gap between visionary design and flawless execution. With a rich background in carpentry and construction management, Lubo brings a wealth of experience to every project, ensuring that the smallest details are meticulously handled. His expertise in transforming design concepts into beautifully built homes makes him a trusted partner for clients seeking the finest in luxury living.

Specializing in cabinet installations and working closely with the design team, Lubo’s eye for detail and problem-solving skills ensure that each project is executed with precision and care. He is particularly adept at managing subcontractors and bringing a collaborative spirit to the job site, ensuring that each phase of construction flows smoothly while maintaining the highest standards of quality.

Outside of work, Lubo enjoys swimming, tending to his vegetable garden, and reading two new books each month. His passion for continuous learning and staying active reflects his dedication to both his craft and his personal growth, ensuring that he always brings fresh ideas and a keen focus to every luxury home project.

Mauricio serves as a highly experienced Lead Journeyman Carpenter at LEFF Design Build, contributing over 20 years in fine carpentry to every endeavor. His strong commitment to craftsmanship allows him to specialize in outstanding finish work, guaranteeing each project upholds the utmost standards of detail. With his skills in framing and detailed woodworking, Mauricio effectively brings architectural dreams to life, resulting in aesthetically pleasing yet practical spaces.

On-site, Mauricio stands out as a leader, adeptly handling intricate tasks while also guiding his teammates. His unwavering commitment to quality and meticulousness enables him to complete projects with impeccable craftsmanship, consistently surpassing the expectations of our discerning clients.

In his leisure time, Mauricio loves to play soccer and cherish moments with his family. Whether involved in sports or work, he applies the same enthusiasm, collaboration, and dedication, ensuring that every project he influences leaves a lasting mark of excellence.

With over 23 years of experience at LEFF in finish carpentry, Roberto is a master craftsman at LEFF Design Build, bringing unparalleled expertise to every custom home project. Specializing in framing and fine woodworking, Roberto takes pride in transforming architectural blueprints into stunning, high-end residences. His meticulous attention to detail ensures that each project not only meets but surpasses the expectations of our discerning clients.

Roberto's deep knowledge of carpentry and his commitment to quality craftsmanship make him an invaluable leader on the job site. From the initial framing to the final touches, Roberto’s hands-on approach ensures that every element of the build reflects LEFF’s standard of excellence. His passion for his craft is evident in the precision and beauty of his work, making him a key player in creating homes that stand the test of time.

In his free time, Roberto enjoys riding horses on scenic trails and playing soccer, balancing his dedication to building beautiful homes with a love for the outdoors and staying active.

Roberto Jr. brings a wealth of practical experience and a genuine passion for his craft to his position as a journeyman carpenter at LEFF Design Build. His expertise lies mainly in rough framing, where he plays an essential role in establishing the framework of every project, ensuring that each construction adheres to standards of precision and durability. His dedication to collaboration and meticulousness makes him a crucial member of our team, helping to create homes that exemplify top-tier craftsmanship.

In his free time, Roberto Jr. revels in the great outdoors. Whether he’s fishing, hiking through nature, or refining his carpentry techniques, he approaches these hobbies with the same enthusiasm that he brings to building remarkable residences. This affinity for nature enriches his work, motivating him to design spaces that seamlessly blend comfort with their natural environments.

Wyatt is a dedicated apprentice carpenter at LEFF Design Build, bringing an enthusiasm for craftsmanship and a keen eye for detail to every project. Under the mentorship of our expert builders, Wyatt is developing his skills in fine carpentry, contributing to the creation of homes that reflect the highest standards of luxury and precision. His commitment to quality and his passion for learning ensure that each project he works on aligns with LEFF’s reputation for excellence.

Wyatt’s approach to his craft is deeply influenced by his love for the outdoors. When he’s not working, he spends as much time as possible immersed in nature—whether camping, backpacking, overlanding, or just getting out there for the day. His time in the wilderness fuels his appreciation for natural materials and the beauty of craftsmanship, inspiring him to create homes that harmonize with their environment and offer serene, comfortable living spaces.

Tanner is a versatile apprentice carpenter at LEFF Design Build, known for his adaptability on the jobsite and his eagerness to learn beyond the traditional scope of carpentry. He brings a problem-solving mindset to every project, readily adjusting to new challenges and supporting the team wherever needed. Under the guidance of LEFF’s skilled builders, Tanner continues to expand his knowledge across multiple phases of construction, from framing and finish work to demolition.

Tanner’s favorite part of his work is collaborating with his coworkers and contributing wherever he can add value. Moving between different tasks allows him to continuously grow his skill set while helping projects move forward efficiently. Outside of work, Tanner enjoys long hikes with friends, hammock camping, and whittling. His creative interests—including playing Dungeons & Dragons, making music on his saxophone, and cooking—reflect his curiosity and hands-on approach, qualities that carry through to his craftsmanship and commitment to LEFF’s standard of excellence.

As the Office Manager at LEFF Design Build, Janell is vital to the company's smooth functioning. Her outstanding organizational abilities and meticulous attention to detail allow her to handle daily operations efficiently, managing communications, scheduling, and administrative tasks that ensure the luxury projects at LEFF operate without a hitch.

Janell's skill in juggling various responsibilities with accuracy and professionalism guarantees top-notch service for both clients and her colleagues. Her commitment to fostering an organized and responsive workplace helps LEFF uphold the high standards and client-centric ethos that characterize each project.

Outside of her work duties, Janell loves to barbecue with her husband and three children, take walks with her Great Dane, and indulge in crafting. Her passion for family and creativity reflects the warmth and meticulousness she contributes to her role at LEFF.