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Addition to existing structure builders in Oceanside

Avatar for Remcon Design Build
Remcon Design Build
7154 Convoy Ct
5.00(
1
)
Approved Pro
Remcon Design Build
7154 Convoy Ct
5.00(
1
)
Approved Pro
19 years of experience
Free onsite estimate

Remcon Design Build is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Remcon Design Build is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.


Avatar for IJH Construction, Inc.
IJH Construction, Inc.
110 W Avenida Cordoba
New on HomeAdvisorNew on Angi
Approved Pro
IJH Construction, Inc.
110 W Avenida Cordoba
New on AngiNew on HomeAdvisor
Approved Pro
24 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer’s needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.


SEAMLESS BUILDERS INC
9223 DALEHURST Rd
New on HomeAdvisorNew on Angi
Approved Pro
SEAMLESS BUILDERS INC
9223 DALEHURST Rd
New on AngiNew on HomeAdvisor
Approved Pro
2 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today


lic since 92 30 years of experience

"Tuan is very honest, great communicator, reasonable price and great quality."

Phil R on June 2020


Avatar for Signature Construction Service
Signature Construction Service
32883 Adelante Street
4.91(
17
)
Approved Pro
Signature Construction Service
32883 Adelante Street
4.91(
17
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
27 years of experience

We are a general contracting company that specializes in custom homesand ADU's. We have been in business since 1998 and have completed projects in Marina Del Rey, Rancho Palos Verdes, Lancaster, Riverside, Corona, Redlands, Jurupa Valley, Chino, Lake Matthews, Chino Hills, Perris, Norco, Santa Ana, Bradbury, Lynwood, Menifee and Ontario. We are a smaller company and as such we are able to offer competitive pricing and personal service that much larger firms cannot offer. I have built a solid team of subcontractors and in conjunction with them, we work to build a quality project. Our company can take your project from the planning stage through its completion. We are also partnered with a mortgage company to offer competitive financing to our Clients.

"I had the pleasure of working with Karl Linsenbardt of Signature Construction who I hired to build an ADU on my property. I was extremely impressed with his professionalism, good values and expertise in the field. From the beginning, it was evident that Karl operates with the utmost professionalism, arriving on time and maintaining clear communication throughout the project. His commitment to cleanliness was remarkable; the work area was consistently tidy and organized. Karl proved to be highly knowledgeable in his trade, offering valuable insights and solutions that greatly improved the outcome of the ADU. What truly sets him apart is his expertise in the field in building ADUâ s. He approached the project with confidence and demonstrated a deep understanding of their craft. Additionally, Karl worked seamlessly with a network of excellent subcontractors, further enhancing the overall quality of the work. In summary, Karl is a true professional who combines cleanliness, expertise, good values, and excellent subcontractor partnerships to deliver top-notch results. I wholeheartedly recommend his services and would not hesitate to work with them again for any future projects."

helen z on November 2023

We are a general contracting company that specializes in custom homesand ADU's. We have been in business since 1998 and have completed projects in Marina Del Rey, Rancho Palos Verdes, Lancaster, Riverside, Corona, Redlands, Jurupa Valley, Chino, Lake Matthews, Chino Hills, Perris, Norco, Santa Ana, Bradbury, Lynwood, Menifee and Ontario. We are a smaller company and as such we are able to offer competitive pricing and personal service that much larger firms cannot offer. I have built a solid team of subcontractors and in conjunction with them, we work to build a quality project. Our company can take your project from the planning stage through its completion. We are also partnered with a mortgage company to offer competitive financing to our Clients.

"I had the pleasure of working with Karl Linsenbardt of Signature Construction who I hired to build an ADU on my property. I was extremely impressed with his professionalism, good values and expertise in the field. From the beginning, it was evident that Karl operates with the utmost professionalism, arriving on time and maintaining clear communication throughout the project. His commitment to cleanliness was remarkable; the work area was consistently tidy and organized. Karl proved to be highly knowledgeable in his trade, offering valuable insights and solutions that greatly improved the outcome of the ADU. What truly sets him apart is his expertise in the field in building ADUâ s. He approached the project with confidence and demonstrated a deep understanding of their craft. Additionally, Karl worked seamlessly with a network of excellent subcontractors, further enhancing the overall quality of the work. In summary, Karl is a true professional who combines cleanliness, expertise, good values, and excellent subcontractor partnerships to deliver top-notch results. I wholeheartedly recommend his services and would not hesitate to work with them again for any future projects."

helen z on November 2023


Avatar for Preferred Remodelers
Preferred Remodelers
1145-C Industrial Avenue
5.00(
8
)
Approved Pro
Preferred Remodelers
1145-C Industrial Avenue
5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
39 years of experience

It is my mission to provide excellence to all our projects and exceed our clients’ expectations of the value they will receive by providing professionalism of management, as well as high quality craftsmanship. Trust and honesty are to be the foundation for all our client and business relationships. It is my goal to develop and nurture relationships with our clients and business associates by maintaining a team atmosphere with a common goal.

"Jim is a great guy to work with!!! He was very understanding and responsive to all my questions and concerns. He oversaw the entire operation of removing a wall to open up the living area. This encompassed general demo and construction, electrical, resurfacing, matching texture and repainting. Followed by some special hardwood floor detail work. His team of workers are always excellent and considerate of us and our home. You will not be disappointed! It is very difficult to try and choose a contractor and I feel lucky to have found him!!"

Melody M on November 2021

It is my mission to provide excellence to all our projects and exceed our clients’ expectations of the value they will receive by providing professionalism of management, as well as high quality craftsmanship. Trust and honesty are to be the foundation for all our client and business relationships. It is my goal to develop and nurture relationships with our clients and business associates by maintaining a team atmosphere with a common goal.

"Jim is a great guy to work with!!! He was very understanding and responsive to all my questions and concerns. He oversaw the entire operation of removing a wall to open up the living area. This encompassed general demo and construction, electrical, resurfacing, matching texture and repainting. Followed by some special hardwood floor detail work. His team of workers are always excellent and considerate of us and our home. You will not be disappointed! It is very difficult to try and choose a contractor and I feel lucky to have found him!!"

Melody M on November 2021


Avatar for Olalde Group, Inc.
Olalde Group, Inc.
741 East Adams Park Drive
5.00(
1
)
Approved Pro
Olalde Group, Inc.
741 East Adams Park Drive
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 local quotes requested

Olalde Group, Inc., is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Please give us a call today!

"Efrain and David are fantastic! When our contractor was suddenly unable to continue with the job, David took over with a great positive attitude. He persistently worked with the city to get the building permit, finally ending a tedious 10 month process. Crews were here working every day. Each one of them was considerate, conscientious, and demonstrated a strong work ethic. Efrain and David communicated with us most days and were always accessible to us. My ADU is adorable and just what we wanted and I am sure that many contractors could have pulled it off. The important thing about Olalde is that they truly care and honestly want us to be happy."

Judy M on October 2023

Olalde Group, Inc., is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade, combined with ability makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. Please give us a call today!

"Efrain and David are fantastic! When our contractor was suddenly unable to continue with the job, David took over with a great positive attitude. He persistently worked with the city to get the building permit, finally ending a tedious 10 month process. Crews were here working every day. Each one of them was considerate, conscientious, and demonstrated a strong work ethic. Efrain and David communicated with us most days and were always accessible to us. My ADU is adorable and just what we wanted and I am sure that many contractors could have pulled it off. The important thing about Olalde is that they truly care and honestly want us to be happy."

Judy M on October 2023


Avatar for Socal Express Restoration and Construction Inc.
Socal Express Restoration and Construction Inc.
6860 Canby Avenue, Suite 114
New on HomeAdvisorNew on Angi
Approved Pro
Socal Express Restoration and Construction Inc.
6860 Canby Avenue, Suite 114
New on AngiNew on HomeAdvisor
Approved Pro
5 years of experience
Free onsite estimate

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. You’ll 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. You’ll be pleased you did. Thank you


ECS Construction, Inc.
1185 Park Center Drive, Suite T
4.88(
32
)
Approved Pro
ECS Construction, Inc.
1185 Park Center Drive, Suite T
4.88(
32
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
36 years of experience

ECS Construction has been serving San Diego's North County since 1989. We specialize in all areas of residential construction including custom homes, room additions, remodels, kitchens and baths.

"Eric and his team were professional and communicative throughout. He helped us repair an external leak of unknown origin and was able to provide reasonable estimates for repairs even before exact details of the issue were known. Would highly recommend."

Denis G on January 2024

ECS Construction has been serving San Diego's North County since 1989. We specialize in all areas of residential construction including custom homes, room additions, remodels, kitchens and baths.

"Eric and his team were professional and communicative throughout. He helped us repair an external leak of unknown origin and was able to provide reasonable estimates for repairs even before exact details of the issue were known. Would highly recommend."

Denis G on January 2024


Nixon Development LLC
3238 Grey Hawk Court
New on HomeAdvisorNew on Angi
Approved Pro
Nixon Development LLC
3238 Grey Hawk Court
New on AngiNew on HomeAdvisor
Approved Pro
10 years of experience
Free onsite estimate

With over 10 years of experience as a General Contractor, Nixon Development LLC is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you! nixongc.com

With over 10 years of experience as a General Contractor, Nixon Development LLC is who you need to take care of your home. We handle everything from the initial consultation to making sure your property looks perfect every single time. We will always treat your property as we would treat our own, and you will be surprised how simple and easy our team will make the whole process seem. Give our team a call today. We're looking forward to working with you! nixongc.com

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FAQs for addition to existing structure building service projects in Oceanside, CA

Yes, you can add a bathroom on a concrete slab, but the crew will need to saw-cut the slab, trench in new supply and drain lines, and then patch the concrete without weakening the foundation. Working with an experienced plumber and concrete pro keeps the structure intact and helps the new bathroom pass inspections.

schedule covers planning, permits, framing, rough-ins, finishes, and punch-list items. 

Larger spaces or extensive plumbing and electrical upgrades can stretch the timeline, while a simple powder-room conversion may wrap up faster. Hiring licensed pros helps keep the schedule on track and the work up to code.

The best location depends on how your family uses the space. An upstairs bath keeps nighttime trips close to the bedrooms, while a first-floor powder room is handy for guests and everyday traffic. 

Think about where plumbing lines already run, how much square footage you can spare, and what layout changes fit your budget. A pro can map out the smartest spot and handle any code hurdles.

With the right planning, you can carve out a bathroom in almost any part of the house. A successful addition requires sufficient space, proper ventilation, and access to plumbing and electrical systems. Structural modifications and adherence to building codes are essential. 

This process demands careful planning and the coordination of specialized professionals who ensure that the new space meets all code requirements and functional needs.

Under specific conditions, adding an extra bedroom can boost home value more than adding a bathroom. Home value is driven by overall configuration, market demand, and functional balance. A new bedroom influences the property’s appeal in different ways, while an additional bathroom enhances living convenience. Evaluating the current layout and market trends determines the optimal choice for maximum value.

The Oceanside, CA homeowners’ guide to addition to existing structure building services
From average costs to expert advice, get all the answers you need to get your job done.
master bedroom with fireplace
Jun 26, 2025
Jun 26, 2025
Budget for bedroom remodel costs based on factors such as bedroom size, remodel type, features, materials, labor, and more.
CONTRACTOR LOOKING OVER HOME DEVELOPMENT
Apr 19, 2025
Apr 19, 2025
Budget for your general contractor’s hourly rate by considering factors such as project scope, fee structure, pricing model, and more.
Outdoor view of the modern house
Jun 16, 2025
Jun 16, 2025
Explore how square footage, room type, home additions, and other common factors affect house renovation costs with our detailed cost guide.
BRIGHT OPEN ATTIC SPACE
Jun 10, 2025
Jun 10, 2025
An in-law suite is a great solution for people who have family visiting often. Explore how much an in-law suite costs and prep to build yours.
white and gray kitchen with butchers block countertop
Apr 8, 2025
Apr 8, 2025
Looking to enhance the warmth and utility of your kitchen? Explore how much a butcher block countertop costs and start your budget here.
built-in outdoor kitchen with grill and sink
Apr 30, 2025
Apr 30, 2025
Budget for outdoor kitchen costs based on factors such as appliances, materials, permits, labor, amenities, kitchen size, customizations, and more.
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