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Guest house builders in Mill Valley
We are a team of skilled trade professionals dedicated to quality workmanship and trusted relationships with our clients. Our subcontractors are all trusted parts of our team. We strive to coexist with your lifestyle's needs and concerns and we have fun doing our work - which is making the dream of your living space come to life! Serving Napa, Marin, Yolo, Contra Costa & Alameda Counties as well as parts of others. Call to verify. Hourly handyman services are not available in all cities and counties.
"Ben and his team completed work on my condo and I could not be more pleased with the results. I tasked them with a two bathroom remodels, kitchen sink replacement, and the creation of new sliding doors between my office and the master bedroom. Ben, Marcus, and Pete were prompt, professional, and very considerate of my time and space. Of note is Ben's candor when it came to design ideas, and expense. He advised that several of my ideas weren't worth the money, and suggested more cost effective alternatives, which I really appreciated. I would absolutely hire Ben and his team again for future work."
Kyle S on April 2025
We are a team of skilled trade professionals dedicated to quality workmanship and trusted relationships with our clients. Our subcontractors are all trusted parts of our team. We strive to coexist with your lifestyle's needs and concerns and we have fun doing our work - which is making the dream of your living space come to life! Serving Napa, Marin, Yolo, Contra Costa & Alameda Counties as well as parts of others. Call to verify. Hourly handyman services are not available in all cities and counties.
"Ben and his team completed work on my condo and I could not be more pleased with the results. I tasked them with a two bathroom remodels, kitchen sink replacement, and the creation of new sliding doors between my office and the master bedroom. Ben, Marcus, and Pete were prompt, professional, and very considerate of my time and space. Of note is Ben's candor when it came to design ideas, and expense. He advised that several of my ideas weren't worth the money, and suggested more cost effective alternatives, which I really appreciated. I would absolutely hire Ben and his team again for future work."
Kyle S on April 2025
Crystal Oak Builders is a full-service residential, eco-friendly construction and interior design company. We create beautiful, fresh and affordable interiors throughout the Bay Area. Hi My Name is Heidi Charles. I am the General Contractor / Owner of Crystal Oak Builders. Thank you So much for Reading Our Page. I look forward to the Opportunity to work with You. We are truly excited and passionate about working with our clients every step of the way. From the initial design phase, to product selection, to demo and construction, your happiness is our main goal. We will ask for you to share your budget information and will make every effort to work within those parameters, incorporating everything on your wish list. Included in the cost of your project is our Design Care Coordinator, who will meet with you and help you to choose everything needed for your rennovation. Our computer generated drawings will help you to envision your completed space and make sure it is exactly what you want. Also, our Project Manager will oversee your project from start to finish. We want this process to be as smooth and enjoyable as possible.
"Working with Crystal Oak builders was a wonderful experience from start to finish. They always kept everything clean and was easy to work with. Everything came out beautifully all their work was top-notch. I work with again in a second."
Jill L on March 2025
Crystal Oak Builders is a full-service residential, eco-friendly construction and interior design company. We create beautiful, fresh and affordable interiors throughout the Bay Area. Hi My Name is Heidi Charles. I am the General Contractor / Owner of Crystal Oak Builders. Thank you So much for Reading Our Page. I look forward to the Opportunity to work with You. We are truly excited and passionate about working with our clients every step of the way. From the initial design phase, to product selection, to demo and construction, your happiness is our main goal. We will ask for you to share your budget information and will make every effort to work within those parameters, incorporating everything on your wish list. Included in the cost of your project is our Design Care Coordinator, who will meet with you and help you to choose everything needed for your rennovation. Our computer generated drawings will help you to envision your completed space and make sure it is exactly what you want. Also, our Project Manager will oversee your project from start to finish. We want this process to be as smooth and enjoyable as possible.
"Working with Crystal Oak builders was a wonderful experience from start to finish. They always kept everything clean and was easy to work with. Everything came out beautifully all their work was top-notch. I work with again in a second."
Jill L on March 2025
**North Bay's Premier Bathroom Remodeling company.** Mt. Tam construction remodels bathrooms ,kitchens and decks from design to finish and convert garages and basements into living space. Our main focus for the last eight years has been bathroom remodeling. Our projects range from simply removing and replacing fixtures ,tile and plumbing to very complex projects involving wall removal ,relocation of plumbing fixtures ,updated electrical and lighting, and structural dry rot repair. Mt. Tam construction is owned by Roger Huntress, a California licensed general contractor , license number 584072. He has worked in Bay Area residential remodeling for over 30 years serving Marin and San Francisco. We carry Workmen's Compensation and liability insurance on all projects. Let us provide you with a free, detailed proposal for your home remodel. You can contact us today at (415)-730-0438 Email: mttamconstruction@comcast.net We are an "A" rated company.
"It’s all about trust. We live on the East Coast, and our Marin County family home needed a kitchen remodel. We were looking for a contractor we could trust to look out for our best interests. We were fortunate to find Roger Huntress and Mt. Tam Construction. Roger handled everything including several things outside of his responsibilities. He truly wants to help. The Mt. Tam Construction team is professional, they respect your home, and keep a clean work site. The job started on time and finished on schedule. The finished kitchen is exactly what we wanted and within our budget."
David T on December 2023
**North Bay's Premier Bathroom Remodeling company.** Mt. Tam construction remodels bathrooms ,kitchens and decks from design to finish and convert garages and basements into living space. Our main focus for the last eight years has been bathroom remodeling. Our projects range from simply removing and replacing fixtures ,tile and plumbing to very complex projects involving wall removal ,relocation of plumbing fixtures ,updated electrical and lighting, and structural dry rot repair. Mt. Tam construction is owned by Roger Huntress, a California licensed general contractor , license number 584072. He has worked in Bay Area residential remodeling for over 30 years serving Marin and San Francisco. We carry Workmen's Compensation and liability insurance on all projects. Let us provide you with a free, detailed proposal for your home remodel. You can contact us today at (415)-730-0438 Email: mttamconstruction@comcast.net We are an "A" rated company.
"It’s all about trust. We live on the East Coast, and our Marin County family home needed a kitchen remodel. We were looking for a contractor we could trust to look out for our best interests. We were fortunate to find Roger Huntress and Mt. Tam Construction. Roger handled everything including several things outside of his responsibilities. He truly wants to help. The Mt. Tam Construction team is professional, they respect your home, and keep a clean work site. The job started on time and finished on schedule. The finished kitchen is exactly what we wanted and within our budget."
David T on December 2023
Geico Builders specializes in meeting your expectations before, during, and after the project is complete. Our most upstanding quality is our accountability--you can expect us to own the work we complete for your home. Of course, we know accountability means nothing without proof, which is why we are happy to offer a 2-year workmanship warranty to all of our clients. This is a rare quality for this industry, but we wanted to prove to you that we stand by our craftsmanship through our home remodeling construction services. Every Crew at Geico Builders has been professionally trained and will treat your home with integrity and respect.
"We hire Geico builders for our kitchen remodeling project, and I'm happy to share my experience: Working with Zaya and Geico Builders was a great decision. They were professional, friendly, and easy to work with. From the start, the process was smooth and efficient. The craftmanship of my remodel kitchen and attention to detail were exceptional, and the end result far exceeded my expectations. From the design phase to completion, their communication was excellent, and I felt completely at ease with them working in my home. The design solutions completely transformed my kitchen, making it both functional and beautiful. I highly recommend Geico Builders for anyone looking for a stress-free and satisfying remodeling experience."
Mary S on March 2025
Geico Builders specializes in meeting your expectations before, during, and after the project is complete. Our most upstanding quality is our accountability--you can expect us to own the work we complete for your home. Of course, we know accountability means nothing without proof, which is why we are happy to offer a 2-year workmanship warranty to all of our clients. This is a rare quality for this industry, but we wanted to prove to you that we stand by our craftsmanship through our home remodeling construction services. Every Crew at Geico Builders has been professionally trained and will treat your home with integrity and respect.
"We hire Geico builders for our kitchen remodeling project, and I'm happy to share my experience: Working with Zaya and Geico Builders was a great decision. They were professional, friendly, and easy to work with. From the start, the process was smooth and efficient. The craftmanship of my remodel kitchen and attention to detail were exceptional, and the end result far exceeded my expectations. From the design phase to completion, their communication was excellent, and I felt completely at ease with them working in my home. The design solutions completely transformed my kitchen, making it both functional and beautiful. I highly recommend Geico Builders for anyone looking for a stress-free and satisfying remodeling experience."
Mary S on March 2025
FSP General Contractors is a general contracting company that specializes in residential & commercial remodel, renovation, & general construction. We service clients throughout the SF Bay Area and Lake Tahoe (CA) area. With service to Northern Nevada coming soon! Our clients experience an unparalleled level of service and quality. We can be reached directly at 415-233-1723 (Bay Area, CA) or 775-856-9836 (Lake Tahoe/NV), to schedule an initial consultation.
"Less than 4 months after installation all of the engineered wood flooring is cupping. Although the manufacturer's installation instructions specify glue-down method (which was the original method we selected, and paid for in the end), Frederick pushed for floating floor installation. The website is very clear on glue-down only for these dimensions, but Frederick has not responded to any communication since December 20. Price of materials+delivery: $3,268.37+$300 Price of installation: $2842.45 Total paid to GC: $6410.82"
Aliona G on April 2025
FSP General Contractors is a general contracting company that specializes in residential & commercial remodel, renovation, & general construction. We service clients throughout the SF Bay Area and Lake Tahoe (CA) area. With service to Northern Nevada coming soon! Our clients experience an unparalleled level of service and quality. We can be reached directly at 415-233-1723 (Bay Area, CA) or 775-856-9836 (Lake Tahoe/NV), to schedule an initial consultation.
"Less than 4 months after installation all of the engineered wood flooring is cupping. Although the manufacturer's installation instructions specify glue-down method (which was the original method we selected, and paid for in the end), Frederick pushed for floating floor installation. The website is very clear on glue-down only for these dimensions, but Frederick has not responded to any communication since December 20. Price of materials+delivery: $3,268.37+$300 Price of installation: $2842.45 Total paid to GC: $6410.82"
Aliona G on April 2025
Build Ur Dream Builders Inc, located in Burlingame, CA, specializes in transforming homes into personalized and functional spaces. We offer kitchen and bathroom remodeling, room additions, complete remodeling, and new construction, tailored to your needs and style. Our professional team focuses on quality, attention to detail, and customer satisfaction, delivering exceptional results on every project. Trust us to build the home of your dreams. State Licenses C-39 Roofing #: 1066990 EXP: 7/31/2026 C-33 Painting and Decorating #: 1066990 EXP: 7/31/2026 C-10 Electrical #: 1066990 EXP: 7/31/2026 C-36 Plumbing #: 1066990 EXP: 7/31/2026 B-General Building Contractor #: 1066990 EXP: 7/31/2026
Build Ur Dream Builders Inc, located in Burlingame, CA, specializes in transforming homes into personalized and functional spaces. We offer kitchen and bathroom remodeling, room additions, complete remodeling, and new construction, tailored to your needs and style. Our professional team focuses on quality, attention to detail, and customer satisfaction, delivering exceptional results on every project. Trust us to build the home of your dreams. State Licenses C-39 Roofing #: 1066990 EXP: 7/31/2026 C-33 Painting and Decorating #: 1066990 EXP: 7/31/2026 C-10 Electrical #: 1066990 EXP: 7/31/2026 C-36 Plumbing #: 1066990 EXP: 7/31/2026 B-General Building Contractor #: 1066990 EXP: 7/31/2026
We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
"John and his team do amazing work. Built a stunning custom office space with a floor to ceiling library, custom cabinets and custom French doors that blended into our existing home design. I’ve owned a number of homes over the years and I’ve never worked with a builder more dedicated to quality and with more experience than Bay."
Peter and Nancy T on February 2025
We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
"John and his team do amazing work. Built a stunning custom office space with a floor to ceiling library, custom cabinets and custom French doors that blended into our existing home design. I’ve owned a number of homes over the years and I’ve never worked with a builder more dedicated to quality and with more experience than Bay."
Peter and Nancy T on February 2025
At Rock Bay Construction & Remodeling we transform visions into reality. Based in the heart of the Bay Area, CA, and backed by over 10 years of experience. Our family-owned company prides itself on delivering high-quality construction, remodeling, and design services tailored to meet the unique needs of each client. Whether modernizing kitchens and bathrooms, adding new rooms, or executing complete home renovations, our expert team ensures precision, reliability, and unparalleled craftsmanship. Partner with us to elevate your space with the perfect blend of functionality and style. Contact us today to get started! Licensed, bonded and insured. Lic # 119693
"It was such a smooth process. Our bathroom looks amazing. The team was very accommodating to last minute changes by us, very transparent in communicating to us on the milestones. We were also at work during the day and felt very safe with the workers around our dog. The project manager brought the right skilled plumbers, electricians and tile people to work on the project and it felt like a white glove treatment. On the cost side, very affordable for the quality of work they perform and we found the transparency in pricing very critical to us picking them."
Nilotpal P on February 2025
At Rock Bay Construction & Remodeling we transform visions into reality. Based in the heart of the Bay Area, CA, and backed by over 10 years of experience. Our family-owned company prides itself on delivering high-quality construction, remodeling, and design services tailored to meet the unique needs of each client. Whether modernizing kitchens and bathrooms, adding new rooms, or executing complete home renovations, our expert team ensures precision, reliability, and unparalleled craftsmanship. Partner with us to elevate your space with the perfect blend of functionality and style. Contact us today to get started! Licensed, bonded and insured. Lic # 119693
"It was such a smooth process. Our bathroom looks amazing. The team was very accommodating to last minute changes by us, very transparent in communicating to us on the milestones. We were also at work during the day and felt very safe with the workers around our dog. The project manager brought the right skilled plumbers, electricians and tile people to work on the project and it felt like a white glove treatment. On the cost side, very affordable for the quality of work they perform and we found the transparency in pricing very critical to us picking them."
Nilotpal P on February 2025
Welcome to Tech Line Construction, your trusted partner in enhancing your home and transforming your wishes into visual and solid realities. With over a decade of unwavering dedication and a commitment to excellence, we have proudly served our clients in delivering top-tier construction solutions. We specialize in providing top-notch services for residential and commercial projects. Our commitment to professionalism, quality, and meticulous attention to detail sets us apart from our competitors. Choose Tech Line Construction for your next construction project and experience the highest level of service and craftsmanship. Bay Area General B Contractor Jose Rodriguez ( General Building contractor ) (510)798-5869 Office@techlineconstruction.info Tech Line Construction inc TechLineconstructiondesign.com CSLB # LIC 1094361 Commercial liability &Worker comp. Insured & bonded
Welcome to Tech Line Construction, your trusted partner in enhancing your home and transforming your wishes into visual and solid realities. With over a decade of unwavering dedication and a commitment to excellence, we have proudly served our clients in delivering top-tier construction solutions. We specialize in providing top-notch services for residential and commercial projects. Our commitment to professionalism, quality, and meticulous attention to detail sets us apart from our competitors. Choose Tech Line Construction for your next construction project and experience the highest level of service and craftsmanship. Bay Area General B Contractor Jose Rodriguez ( General Building contractor ) (510)798-5869 Office@techlineconstruction.info Tech Line Construction inc TechLineconstructiondesign.com CSLB # LIC 1094361 Commercial liability &Worker comp. Insured & bonded
We are a locally owned and operated company since 2009, with lots of industry experience. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other Home Improvement projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction! We are a bilingual company, and are happy to serve both our English and Spanish Speaking communities! ¡Hablamos Espanol!
"Oscar truly stands out as a contractor who cares deeply about his clients, and that’s exactly how he made me feel. I reached out to five different contractors to assess my bathroom and offer ideas, but my experiences varied significantly. Some were overly sales-driven, others dismissed my ideas entirely, and one didn’t even follow up with an estimate. Oscar, however, was a breath of fresh air. He arrived on time, listened attentively to my ideas, and offered thoughtful suggestions. He was highly collaborative with the other workers on site, making sure everything was well coordinated. Oscar's expertise in the industry is evident, and he’s exceptionally creative when it comes to problem-solving. When he identified additional challenges during the project, he took the time to offer practical solutions, demonstrating his commitment to delivering the best result. Oscar has earned my trust and will be my go-to contractor for any future projects. I highly recommend him to anyone in need of a reliable, skilled, and dedicated professional"
Lisa N on March 2025
We are a locally owned and operated company since 2009, with lots of industry experience. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other Home Improvement projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction! We are a bilingual company, and are happy to serve both our English and Spanish Speaking communities! ¡Hablamos Espanol!
"Oscar truly stands out as a contractor who cares deeply about his clients, and that’s exactly how he made me feel. I reached out to five different contractors to assess my bathroom and offer ideas, but my experiences varied significantly. Some were overly sales-driven, others dismissed my ideas entirely, and one didn’t even follow up with an estimate. Oscar, however, was a breath of fresh air. He arrived on time, listened attentively to my ideas, and offered thoughtful suggestions. He was highly collaborative with the other workers on site, making sure everything was well coordinated. Oscar's expertise in the industry is evident, and he’s exceptionally creative when it comes to problem-solving. When he identified additional challenges during the project, he took the time to offer practical solutions, demonstrating his commitment to delivering the best result. Oscar has earned my trust and will be my go-to contractor for any future projects. I highly recommend him to anyone in need of a reliable, skilled, and dedicated professional"
Lisa N on March 2025
Guest house building services FAQs
In most states, yes—you can build a guest house, but every city or county sets its own zoning rules and building codes. Before breaking ground, check local ordinances, confirm lot setbacks, and secure the right permits. A local contractor or design-build firm can walk you through the paperwork and site requirements so your project starts on solid legal footing.
Yes—homeowners often tap a few different financing tools. A home-equity line of credit (HELOC) lets you borrow against your equity as you need funds. If you prefer a lump sum tied directly to the project, a short-term construction loan can roll into a second mortgage once the build is complete. Cash-out refinancing is another option: you replace your current mortgage with a larger one and use the difference to cover construction costs.
When you build a guest house, you’re creating a separate structure for hosting visitors without the full amenities needed for permanent living. An accessory dwelling unit, however, includes a complete kitchen and bathroom, meeting building codes for a long-term residence. This key difference makes an ADU ideal for long-term occupancy or rental income, adding enduring value to your property.
How many rooms you need depends on how you plan to use the space. Aim for one bedroom per every one or two occupants to make sure everyone has enough privacy and comfort. Added living and dining areas give you extra functionality, especially for rental use or long-term stays.
Most homeowners pick somewhere between 600 and 1,500 square feet to fit all the essentials. Make sure your design supports one to two occupants per bedroom and includes enough common areas for comfortable daily living. A well-proportioned layout boosts both functionality and property value.
No—a guest house isn’t just a bump-out on your main home. A bump-out is a small extension within an existing room for extra seating or storage. In contrast, you build a guest house as a standalone building with its own foundation and amenities, giving you a fully separate living area that can boost your property’s versatility and value.
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