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Addition to existing structure builders in Pinon Hills
Cornerstone Construction Co. is a full service residential and commercial general contractor. We are capable and qualified to handle any project you have for us. We are licensed, bonded, and Insured up to 5 million dollars. Give us a call anytime to get your project going! 760-503-5545 / www.CornerstoneCCHD.com
"They did a really good job, very professional and considerate while completing the work. Genuine people!"
Laureen B on March 2018
Cornerstone Construction Co. is a full service residential and commercial general contractor. We are capable and qualified to handle any project you have for us. We are licensed, bonded, and Insured up to 5 million dollars. Give us a call anytime to get your project going! 760-503-5545 / www.CornerstoneCCHD.com
"They did a really good job, very professional and considerate while completing the work. Genuine people!"
Laureen B on March 2018
We are an ethical, honest and professional company. We are easy to communicate with. Always working with you until the job is done right and to your specifications. When working with our company you can expect integrity, prompt service and superior customer service. Always leaving the job site clean . We take pride in our services and enjoy making clients repeat clients. You can count on us to get the job done right the first time. We will meet with you at your convenience and will not keep you waiting. Call us today for your free estimate. Youll be pleased you did. Thank you
We are an ethical, honest and professional company. We are easy to communicate with. Always working with you until the job is done right and to your specifications. When working with our company you can expect integrity, prompt service and superior customer service. Always leaving the job site clean . We take pride in our services and enjoy making clients repeat clients. You can count on us to get the job done right the first time. We will meet with you at your convenience and will not keep you waiting. Call us today for your free estimate. Youll be pleased you did. Thank you
We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!
"Fast response and clear communication throughout the process."
Marco T on April 2025
We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!
"Fast response and clear communication throughout the process."
Marco T on April 2025
VAZQUEZ BUILDER INC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!
"We hired Vazquez Builder for a home addition, and we couldn?t be happier. They added a new room to our structure, and the craftsmanship is excellent. The new space blends seamlessly with the house, and the build quality is top-notch. The team was professional and efficient, completing the project quickly without cutting corners. Pricing was very reasonable, with no hidden costs, and communication was clear throughout. They kept the worksite clean and made the entire process stress-free. "
kayla m on March 2025
VAZQUEZ BUILDER INC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands-on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!
"We hired Vazquez Builder for a home addition, and we couldn?t be happier. They added a new room to our structure, and the craftsmanship is excellent. The new space blends seamlessly with the house, and the build quality is top-notch. The team was professional and efficient, completing the project quickly without cutting corners. Pricing was very reasonable, with no hidden costs, and communication was clear throughout. They kept the worksite clean and made the entire process stress-free. "
kayla m on March 2025
MCCORMICK HOME BUILDERS INC Were a locally owned and operated company that values honesty and integrity and treats your home or business as if it were our own. We are experts in all aspects of roofing projects and our services are customizable to each individual project. We specialize in both installations and replacements. 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 recently remodeled our bathroom with McCormick, and it was a fantastic experience. Khaled was informative, patient, and genuinely helpful, guiding us through choices for a perfect design. The team’s professionalism showed in their punctuality and quality. Every aspect was done with care, from tile placement to lighting. The transformation is truly impressive; the bathroom now feels open and luxurious. We’re beyond pleased with the result and look forward to more projects with them."
Geoffrey C H on January 2025
MCCORMICK HOME BUILDERS INC Were a locally owned and operated company that values honesty and integrity and treats your home or business as if it were our own. We are experts in all aspects of roofing projects and our services are customizable to each individual project. We specialize in both installations and replacements. 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 recently remodeled our bathroom with McCormick, and it was a fantastic experience. Khaled was informative, patient, and genuinely helpful, guiding us through choices for a perfect design. The team’s professionalism showed in their punctuality and quality. Every aspect was done with care, from tile placement to lighting. The transformation is truly impressive; the bathroom now feels open and luxurious. We’re beyond pleased with the result and look forward to more projects with them."
Geoffrey C H on January 2025
With years of experience serving the area, we are your solution for all your remodeling needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Check out our 5 star reviews from happy customers! Call us today so we can discuss your needs and make a plan that fits your budget. Satisfaction guaranteed!
"Great company! They delivered as they promised. Professional work from start to finish. You can tell the difference between old and new windows. Our house looks like new with this windows. Thank you for excellent work."
Nishma P on May 2023
With years of experience serving the area, we are your solution for all your remodeling needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Check out our 5 star reviews from happy customers! Call us today so we can discuss your needs and make a plan that fits your budget. Satisfaction guaranteed!
"Great company! They delivered as they promised. Professional work from start to finish. You can tell the difference between old and new windows. Our house looks like new with this windows. Thank you for excellent work."
Nishma P on May 2023
Coastdesign & Build is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 5 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!
Coastdesign & Build is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 5 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!
RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!
RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!
Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime once you see our quality work. We're passionate about delivering an exceptional experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. We offer various services such as kitchen remodeling, restroom remodels like removing an old bathtub to replace it with your choice of a new tub or a brand new walk in shower, we also offer all types of flooring, drywall, texturing, painting interior and exterior, plumbing, electrical and much more! As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!
"Very well done. Gustavo did the job in a timely manner."
Lou Anne H on February 2025
Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime once you see our quality work. We're passionate about delivering an exceptional experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. We offer various services such as kitchen remodeling, restroom remodels like removing an old bathtub to replace it with your choice of a new tub or a brand new walk in shower, we also offer all types of flooring, drywall, texturing, painting interior and exterior, plumbing, electrical and much more! As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!
"Very well done. Gustavo did the job in a timely manner."
Lou Anne H on February 2025
We are a licensed General Contractors specializing in custom bathroom and kitchen remodels. We are also licensed Plumbing Contractors for all of your plumbing needs including: repairs, re-pipes, new construction, and complete design & build remodels.
"Isaac with Dynasty plumbing was a lifesaver. He was knowledgeable, friendly, and so helpful!! I am so grateful to have found him, and any future plumbing issues, I will go to Isaac first!"
Deanna U on April 2022
We are a licensed General Contractors specializing in custom bathroom and kitchen remodels. We are also licensed Plumbing Contractors for all of your plumbing needs including: repairs, re-pipes, new construction, and complete design & build remodels.
"Isaac with Dynasty plumbing was a lifesaver. He was knowledgeable, friendly, and so helpful!! I am so grateful to have found him, and any future plumbing issues, I will go to Isaac first!"
Deanna U on April 2022
Addition to existing structure building services FAQs
Most ADU projects require several months from initial planning through final inspection. The timeline includes designing plans, securing permits, site preparation, construction, and finishing work.
Factors affecting duration include project complexity, contractor availability, weather conditions, and local permitting processes. Planning for potential delays due to material shortages or inspection scheduling is advisable when establishing your project timeline.
Homeowners can access various funding sources for ADU projects. Home equity loans and lines of credit leverage existing property value, while construction loans provide phased funding specifically for building projects. Some areas offer specialized ADU financing programs with favorable terms.
Personal loans might work for smaller conversions, though they often carry higher interest rates. Your financial situation, credit profile, and project scope will determine which option provides the most advantageous terms.
Adding an ADU often increases your property's assessed value, resulting in higher tax obligations. The specific impact varies by location, as assessment methods and tax rates differ between jurisdictions. Some areas offer temporary exemptions or gradual increases to ease the financial transition.
For accurate projections, consult your local tax assessor before beginning construction to understand how your specific project will affect future tax bills.
Short-term rental regulations vary dramatically between municipalities. Some jurisdictions permit vacation rentals with minimal restrictions, while others impose occupancy limits, licensing requirements, or outright prohibitions, particularly for ADUs. Many areas require owner occupancy of the primary residence when renting an ADU short-term.
Research your local ordinances thoroughly before planning rental income, as non-compliance penalties can be substantial.
The ADU construction process frequently encounters obstacles, including complex permitting requirements, unexpected site conditions requiring additional work, contractor scheduling difficulties, and budget management challenges. Many homeowners underestimate the complexity of coordinating multiple specialized trades.
Additionally, ensuring adequate privacy between the main residence and ADU while maintaining aesthetic cohesion requires careful planning. Thorough preparation and working with experienced professionals can help navigate these common pitfalls.
Identifying qualified ADU contractors requires targeted research. Begin by seeking recommendations from neighbors with completed ADU projects or contacting local builder associations for specialist referrals. Review contractors' portfolios specifically for ADU or small residential projects similar to your vision.
When interviewing potential candidates, assess their familiarity with local ADU regulations, ask about recent similar projects, and request contact information for past clients with comparable projects.
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