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Guest house builders in Ontario
**Decoland Landscape & Construction Design DOES IT ALL** We were founded in 2007 with one goal in mind - to provide a FULL RANGE superior landscaping services, including landscaping, hardscaping and lawn maintenance, at affordable rates to the residents of Laguna Hills. Our company has grown over the years from a two person operation into a full staff of professionals able to meet your every landscaping need. We are dedicated to building long term relationships with our clients by providing the highest standard of quality on each and every project we do. Our reputation for customer satisfaction in the Laguna Hills area is what has made Decoland Landscape & Construction Design a household name in the industry. At Decoland Landscape & Construction Design, we understand that the outdoor aesthetic of your home or business is as important as your interior. We have a team of experts that will consult with you to determine your exact needs. From landscape maintenance to new construction, our residential and commercial clients in Laguna Hills know that when they call Decoland Landscape & Construction Design they will get the best. Contact us today for a FREE consultation and see the difference experience makes!
"Sean was fantastic. Not only did he help me create my Landscape vision but he walked me through the whole Process. He already knew all the HOA rules and guidelines. This was a no brainer in choosing him and Decoland to do my backyard. Anyone looking to do landscaping and/or any house remodeling should definitely look into using him. He’s already doing my other house right now. It’s coming out great."
Jr c on January 2025
**Decoland Landscape & Construction Design DOES IT ALL** We were founded in 2007 with one goal in mind - to provide a FULL RANGE superior landscaping services, including landscaping, hardscaping and lawn maintenance, at affordable rates to the residents of Laguna Hills. Our company has grown over the years from a two person operation into a full staff of professionals able to meet your every landscaping need. We are dedicated to building long term relationships with our clients by providing the highest standard of quality on each and every project we do. Our reputation for customer satisfaction in the Laguna Hills area is what has made Decoland Landscape & Construction Design a household name in the industry. At Decoland Landscape & Construction Design, we understand that the outdoor aesthetic of your home or business is as important as your interior. We have a team of experts that will consult with you to determine your exact needs. From landscape maintenance to new construction, our residential and commercial clients in Laguna Hills know that when they call Decoland Landscape & Construction Design they will get the best. Contact us today for a FREE consultation and see the difference experience makes!
"Sean was fantastic. Not only did he help me create my Landscape vision but he walked me through the whole Process. He already knew all the HOA rules and guidelines. This was a no brainer in choosing him and Decoland to do my backyard. Anyone looking to do landscaping and/or any house remodeling should definitely look into using him. He’s already doing my other house right now. It’s coming out great."
Jr c on January 2025
1 Degree Construction is a premier design/build construction firm in Los Angeles, providing exceptional remodeling, renovation, and new construction services for residential properties throughout Hollywood and its 10 surrounding areas, such as West Hollywood, Beverly Hills, Santa Monica, Culver City, Studio City, Burbank, Glendale, Silver Lake, Los Feliz, and Sherman Oaks. Our skilled team offers a comprehensive range of services, including: Kitchen remodeling: From minor updates to complete transformations, our team can help you create the kitchen of your dreams. Check out our kitchen remodeling portfolio for inspiration. Bathroom remodeling: Whether you're looking to update your current bathroom or create a luxurious spa-like space, we can bring your vision to life. Explore our bathroom remodeling portfolio for ideas. Home additions: Need more space for your growing family or a dedicated home office? We can help you design and build the perfect addition. View our home additions portfolio for examples. New construction: From concept to completion, we provide expert guidance and exceptional craftsmanship for new construction projects. See our new construction portfolio for inspiration. Discover our glowing reviews on Yelp at yelp.com/biz/1-degree-construction-los-angeles-2, and follow us on Facebook at facebook.com/1degreeconstruction and Instagram at instagram.com/1degreeconstruction/?hl=en for our latest projects and design ideas. Learn more about our licensing, project history, and dedication to quality workmanship on BuildZoom at buildzoom.com/contractor/1-degree-construction, and watch our informative construction process videos and client testimonials on our YouTube channel. Experience the difference with our dedicated and professional team, serving the greater Hollywood area with excellence. Contact us at 310-804-8933 to discuss your project and receive a personalized quote.
"My wife and I are thrilled with our new kitchen, thanks to the amazing team at 1 Degree Construction! The craftsmanship is absolutely top-notch — the cabinetry is seamless, the tile work is flawless, and the layout finally makes sense. This was not a small job — we knocked down a wall, moved plumbing, and rewired much of the area — but they handled it like pros. I especially want to highlight how clean and respectful the crew was. They treated our home with care and always made sure things were tidy at the end of the day. Wouldn’t hesitate for a second to hire them again!"
Erik T on June 2025
1 Degree Construction is a premier design/build construction firm in Los Angeles, providing exceptional remodeling, renovation, and new construction services for residential properties throughout Hollywood and its 10 surrounding areas, such as West Hollywood, Beverly Hills, Santa Monica, Culver City, Studio City, Burbank, Glendale, Silver Lake, Los Feliz, and Sherman Oaks. Our skilled team offers a comprehensive range of services, including: Kitchen remodeling: From minor updates to complete transformations, our team can help you create the kitchen of your dreams. Check out our kitchen remodeling portfolio for inspiration. Bathroom remodeling: Whether you're looking to update your current bathroom or create a luxurious spa-like space, we can bring your vision to life. Explore our bathroom remodeling portfolio for ideas. Home additions: Need more space for your growing family or a dedicated home office? We can help you design and build the perfect addition. View our home additions portfolio for examples. New construction: From concept to completion, we provide expert guidance and exceptional craftsmanship for new construction projects. See our new construction portfolio for inspiration. Discover our glowing reviews on Yelp at yelp.com/biz/1-degree-construction-los-angeles-2, and follow us on Facebook at facebook.com/1degreeconstruction and Instagram at instagram.com/1degreeconstruction/?hl=en for our latest projects and design ideas. Learn more about our licensing, project history, and dedication to quality workmanship on BuildZoom at buildzoom.com/contractor/1-degree-construction, and watch our informative construction process videos and client testimonials on our YouTube channel. Experience the difference with our dedicated and professional team, serving the greater Hollywood area with excellence. Contact us at 310-804-8933 to discuss your project and receive a personalized quote.
"My wife and I are thrilled with our new kitchen, thanks to the amazing team at 1 Degree Construction! The craftsmanship is absolutely top-notch — the cabinetry is seamless, the tile work is flawless, and the layout finally makes sense. This was not a small job — we knocked down a wall, moved plumbing, and rewired much of the area — but they handled it like pros. I especially want to highlight how clean and respectful the crew was. They treated our home with care and always made sure things were tidy at the end of the day. Wouldn’t hesitate for a second to hire them again!"
Erik T on June 2025
A COMPLETE EXPERIENCE- The Shenon Construction Team acknowledges that the path of remodeling is as important as the final product. Therefore, we strive to give our clients the most pleasant experience no matter how extensive the project may be. The team is present every step of the way, and is determined to help guide you with decision making, so that the final project meets and exceeds every expectation. A spectacular home and an ecstatic client are our two main priorities! COMMITMENT TO QUALITY- We proudly hold ourselves accountable to achieving the highest quality construction, utilizing durable materials and collaborating with highly skilled professionals. A SENSE FOR DESIGN- We communicate with our clients and have the ability to clearly understand the critical design elements. Prior to construction, we employ a 3D design to visualize your ideas and concepts. This way, we assure that the final execution is flawless. ATTENTION TO DETAIL- We realize that transforming a house into a home, and truly personalizing the project requires immaculate attention to detail. We embrace the uniqueness of each development and we call our projects complete when each of your needs and wants are fulfilled.
"5++ stars! My home's exterior was cracking due to a poor job prior and drainage issues. Tom and Adam and the team not only gave me peace of mind moving forward with drainage, put in gutters, and re-did the entire exterior of my home (stained wood and stucco), but made it beyond beautiful!! They were communicative, timely, so easy to work with, and the end product is gorgeous. I would recommend them to anyone who needs a construction project done and can't wait to use them again on my next project!!"
kim A on April 2025
A COMPLETE EXPERIENCE- The Shenon Construction Team acknowledges that the path of remodeling is as important as the final product. Therefore, we strive to give our clients the most pleasant experience no matter how extensive the project may be. The team is present every step of the way, and is determined to help guide you with decision making, so that the final project meets and exceeds every expectation. A spectacular home and an ecstatic client are our two main priorities! COMMITMENT TO QUALITY- We proudly hold ourselves accountable to achieving the highest quality construction, utilizing durable materials and collaborating with highly skilled professionals. A SENSE FOR DESIGN- We communicate with our clients and have the ability to clearly understand the critical design elements. Prior to construction, we employ a 3D design to visualize your ideas and concepts. This way, we assure that the final execution is flawless. ATTENTION TO DETAIL- We realize that transforming a house into a home, and truly personalizing the project requires immaculate attention to detail. We embrace the uniqueness of each development and we call our projects complete when each of your needs and wants are fulfilled.
"5++ stars! My home's exterior was cracking due to a poor job prior and drainage issues. Tom and Adam and the team not only gave me peace of mind moving forward with drainage, put in gutters, and re-did the entire exterior of my home (stained wood and stucco), but made it beyond beautiful!! They were communicative, timely, so easy to work with, and the end product is gorgeous. I would recommend them to anyone who needs a construction project done and can't wait to use them again on my next project!!"
kim A on April 2025
At ALSA Construction, we deliver a seamless remodeling experience with a focus on customer satisfaction. Specializing in kitchen and bathroom remodeling, ADU/garage conversions, and pergola installations, we bring expert craftsmanship and personalized service to every project. What sets us apart is our attention to detail, commitment to quality, and tailored approach that ensures your vision is brought to life. From start to finish, we prioritize open communication and your satisfaction, creating beautiful, functional spaces that enhance your home’s value and appeal.
"They took care of the process from A-to-Z. They helped me with the design and implementation was very thoroughly thought and smooth. Anar was helpful throughout the process."
Burak O on January 2025
At ALSA Construction, we deliver a seamless remodeling experience with a focus on customer satisfaction. Specializing in kitchen and bathroom remodeling, ADU/garage conversions, and pergola installations, we bring expert craftsmanship and personalized service to every project. What sets us apart is our attention to detail, commitment to quality, and tailored approach that ensures your vision is brought to life. From start to finish, we prioritize open communication and your satisfaction, creating beautiful, functional spaces that enhance your home’s value and appeal.
"They took care of the process from A-to-Z. They helped me with the design and implementation was very thoroughly thought and smooth. Anar was helpful throughout the process."
Burak O on January 2025
So Cal Builders & Design have been helping the homes throughout California look perfect one nail and brick at a time! With the best prices and highest standard of service, we can deliver the kitchen or bathroom of your dreams on time and on budget! Our staff of trained technicians will build your addition or remodel to your specifications; using only the finest quality materials and the most up-to-date building procedures. We also have in house masonry service as well as perform a number of other services such as plumbing, lighting, painting, patios, and much more. Because we do it all ourselves, we eliminate miscommunication, stress and down time. We don’t use outside contractors or fancy gimmicks to get our customers. We combine new and modern building practices with tried and true hard work to deliver a work of art every time and that is why our customers make us #1. Request Your Free Estimate Voice Star: (888) 284-9122.
"I worked with David from So Cal Builders and Design on a bathroom and bedroom addition to my home. We had been through a few renovation projects before so expectations were low, but I can honestly say this is the BEST experience I have ever had with a contractor. If you need work done hire David and his team! David helped navigate the whole process for us from drawing up the plans, through the entire build, and final inspection. As with any renovation project some issues arose along the way, but David's attitude was always "it's okay, we will take care of it"! He was super transparent with everything going on, and was very responsive when I had questions. He also helped me with some design ideas that I absolutely LOVE! The end result is honestly better than I could have fully envisioned, and I truly believe it wouldn't have been possible without David and his team. Thank you for everything So Cal Builders and Design!"
Katherine J on April 2024
So Cal Builders & Design have been helping the homes throughout California look perfect one nail and brick at a time! With the best prices and highest standard of service, we can deliver the kitchen or bathroom of your dreams on time and on budget! Our staff of trained technicians will build your addition or remodel to your specifications; using only the finest quality materials and the most up-to-date building procedures. We also have in house masonry service as well as perform a number of other services such as plumbing, lighting, painting, patios, and much more. Because we do it all ourselves, we eliminate miscommunication, stress and down time. We don’t use outside contractors or fancy gimmicks to get our customers. We combine new and modern building practices with tried and true hard work to deliver a work of art every time and that is why our customers make us #1. Request Your Free Estimate Voice Star: (888) 284-9122.
"I worked with David from So Cal Builders and Design on a bathroom and bedroom addition to my home. We had been through a few renovation projects before so expectations were low, but I can honestly say this is the BEST experience I have ever had with a contractor. If you need work done hire David and his team! David helped navigate the whole process for us from drawing up the plans, through the entire build, and final inspection. As with any renovation project some issues arose along the way, but David's attitude was always "it's okay, we will take care of it"! He was super transparent with everything going on, and was very responsive when I had questions. He also helped me with some design ideas that I absolutely LOVE! The end result is honestly better than I could have fully envisioned, and I truly believe it wouldn't have been possible without David and his team. Thank you for everything So Cal Builders and Design!"
Katherine J on April 2024
Welcome to LA Carpet, your trusted partner in home remodeling. With over 35 years of experience in the industry and a staggering over 300,000 satisfied customers, we have solidified our reputation as a premier provider of top quality flooring, Kitchen, and bath solutions in Los Angeles, Orange County, and Riverside. Deals: - 50% Off A Complete Kitchen & Bathroom Remodeling - 12YR 2.99% APR Financing - 5YR 0% APR Financing
"It went very well, they are fast, cleaned up after themselves, very efficient and they installed our appliances"
Iren s on June 2023
Welcome to LA Carpet, your trusted partner in home remodeling. With over 35 years of experience in the industry and a staggering over 300,000 satisfied customers, we have solidified our reputation as a premier provider of top quality flooring, Kitchen, and bath solutions in Los Angeles, Orange County, and Riverside. Deals: - 50% Off A Complete Kitchen & Bathroom Remodeling - 12YR 2.99% APR Financing - 5YR 0% APR Financing
"It went very well, they are fast, cleaned up after themselves, very efficient and they installed our appliances"
Iren s on June 2023
Family owned and operated, KN remodeling is dedicated to the highest customer satisfaction, providing quality home improvement while giving you best value for your money. How? By meeting our goals of personal trust, professional management and quality workmanship in a timely manner. Thanks to a super team of planner and designers, we have what it takes to bring your project from concept to completion in a fashion that insures the in quality, durability and beauty.
"It went very well, thanks to Nathen and his workers. They cleaned up the trash everyday when they finished the work. The work was done in the time frame they gave me with no hold ups at any point. I already recommended to s friend of mine."
PETRA O on May 2021
Family owned and operated, KN remodeling is dedicated to the highest customer satisfaction, providing quality home improvement while giving you best value for your money. How? By meeting our goals of personal trust, professional management and quality workmanship in a timely manner. Thanks to a super team of planner and designers, we have what it takes to bring your project from concept to completion in a fashion that insures the in quality, durability and beauty.
"It went very well, thanks to Nathen and his workers. They cleaned up the trash everyday when they finished the work. The work was done in the time frame they gave me with no hold ups at any point. I already recommended to s friend of mine."
PETRA O on May 2021
Horizon Construction & Remodeling has been operating in the construction industry for the past 15 years. Our company specializes in new construction projects as well as remodeling assignments. We have vast knowledge in many aspects of remodeling such as: developing new interior or exterior design, custom kitchens, bathrooms remodel, additions, stucco, roofing, flooring, electrical, plumbing, carpentry, windows, doors, patios, sunrooms, railing, fireplaces, decks, fences, driveways, garage conversions and entire home remodeling. We believe in providing a delightful experience to the customer. Fulfilling the needs of the customer is the prime objective of our company. Our Mission is to deliver high-end quality service to customers in order to build their dream project. We work in a dedicated manner according to the interests and demands of the customer. The Philosophy of Horizon Construction & Remodeling states that the benefit of the customer will lead to the growth of the organization. Thus, with the help of expert team work we continually work to provide the best quality services to the customer. Horizon Construction & Remodeling is committed to providing you best building services with the superior remodeling of your home. To us, your construction and design experience will be hassle-free, satisfactory, and enjoyable. We are your friendly contractor! And a reliable destination for all your remodeling and construction needs. If you are looking for a home with perfect space utilization and a fresh look contact Horizon Construction & Remodeling
"We had a fantastic experience with Horizon Construction and Remodeling. Every worker on the team was friendly, punctual and professional. They kept the work area clean and always cleaned up before leaving for the day, which we really appreciated. We were satisfied with the quality of the work and the final results. Our project manager, David Eskin, truly understood the look we were going for and brought our vision to life perfectly. It was a pleasure working with everyone involved. Highly recommend."
Mary H on April 2025
Horizon Construction & Remodeling has been operating in the construction industry for the past 15 years. Our company specializes in new construction projects as well as remodeling assignments. We have vast knowledge in many aspects of remodeling such as: developing new interior or exterior design, custom kitchens, bathrooms remodel, additions, stucco, roofing, flooring, electrical, plumbing, carpentry, windows, doors, patios, sunrooms, railing, fireplaces, decks, fences, driveways, garage conversions and entire home remodeling. We believe in providing a delightful experience to the customer. Fulfilling the needs of the customer is the prime objective of our company. Our Mission is to deliver high-end quality service to customers in order to build their dream project. We work in a dedicated manner according to the interests and demands of the customer. The Philosophy of Horizon Construction & Remodeling states that the benefit of the customer will lead to the growth of the organization. Thus, with the help of expert team work we continually work to provide the best quality services to the customer. Horizon Construction & Remodeling is committed to providing you best building services with the superior remodeling of your home. To us, your construction and design experience will be hassle-free, satisfactory, and enjoyable. We are your friendly contractor! And a reliable destination for all your remodeling and construction needs. If you are looking for a home with perfect space utilization and a fresh look contact Horizon Construction & Remodeling
"We had a fantastic experience with Horizon Construction and Remodeling. Every worker on the team was friendly, punctual and professional. They kept the work area clean and always cleaned up before leaving for the day, which we really appreciated. We were satisfied with the quality of the work and the final results. Our project manager, David Eskin, truly understood the look we were going for and brought our vision to life perfectly. It was a pleasure working with everyone involved. Highly recommend."
Mary H on April 2025
AM II Construction has over 15years of experience in the residential construction, building from the ground-up to finish Our team will go above and beyond insure the customers are happy and satisfied with the work completed. Working with our clients to insure the outcome they have insite and helping them understand the process to completions Our team is able to provide hard work and dedication to service the IE and surrounding areas If you are looking for top quality and outstanding outcomes then give my team a call
"Very professional group of guys very clean and high quality of work, would definitely hire them again and recommend them to family and friends."
Edgar D on March 2025
AM II Construction has over 15years of experience in the residential construction, building from the ground-up to finish Our team will go above and beyond insure the customers are happy and satisfied with the work completed. Working with our clients to insure the outcome they have insite and helping them understand the process to completions Our team is able to provide hard work and dedication to service the IE and surrounding areas If you are looking for top quality and outstanding outcomes then give my team a call
"Very professional group of guys very clean and high quality of work, would definitely hire them again and recommend them to family and friends."
Edgar D on March 2025
We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Call or click to schedule a free estimate today!
"Our kitchen was in dire need of upgrades, and we met with many different contractors for estimates. Young from New Life Construction left the best impression by far, from his professionalism, renovation ideas and design, reasonable pricing, etc. I am so glad we decided to go with New Life as Young and his entire team were a delight to work with from start to finish. We received very helpful opinions regarding many aspects of the design and materials without it being overbearing, and it was helpful to see his previous projects through instagram (@newlife_construction) to see what has worked well for similar kitchens in the past. There was clear communication about everything from details of the job to scheduling and everyone was very attentive to our needs throughout. This company handled the demolition, cleanup, cabinets, countertops, overhead lighting, painting, appliance installation (range/oven and dishwasher), sink and faucet installation for us-- pretty much everything in the kitchen except the floors. They bring in separate contractors that are specialists in their respective field (cabinets, countertop, etc) to do each portion of the project so you know you're truly getting the experts at every step of the way. Even after the project was done, Young went above and beyond to wrap up last-minute issues that came up from cabinet parts that were on backorder and to this day is responsive to any issues that may come up in the future. My family and I are so happy with how the kitchen turned out and we would not hesitate to hire Young and his team again for future projects."
John L on May 2021
We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Call or click to schedule a free estimate today!
"Our kitchen was in dire need of upgrades, and we met with many different contractors for estimates. Young from New Life Construction left the best impression by far, from his professionalism, renovation ideas and design, reasonable pricing, etc. I am so glad we decided to go with New Life as Young and his entire team were a delight to work with from start to finish. We received very helpful opinions regarding many aspects of the design and materials without it being overbearing, and it was helpful to see his previous projects through instagram (@newlife_construction) to see what has worked well for similar kitchens in the past. There was clear communication about everything from details of the job to scheduling and everyone was very attentive to our needs throughout. This company handled the demolition, cleanup, cabinets, countertops, overhead lighting, painting, appliance installation (range/oven and dishwasher), sink and faucet installation for us-- pretty much everything in the kitchen except the floors. They bring in separate contractors that are specialists in their respective field (cabinets, countertop, etc) to do each portion of the project so you know you're truly getting the experts at every step of the way. Even after the project was done, Young went above and beyond to wrap up last-minute issues that came up from cabinet parts that were on backorder and to this day is responsive to any issues that may come up in the future. My family and I are so happy with how the kitchen turned out and we would not hesitate to hire Young and his team again for future projects."
John L on May 2021
FAQs for guest house building service projects in Ontario, CA
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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