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Find Addition to existing structure builders in Saint Helena

Avatar for Grid Design Build

Grid Design Build

1500 3rd St, Suite A
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Grid Design Build

1500 3rd St, Suite A
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
3 years of experience
Free onsite estimate

We're 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 General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other 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're 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 General Contractor Home Improvement services that are customizable to each individual project. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other 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!


Avatar for Whitney Homes

Whitney Homes

3558 Round Barn Blvd Ste 200
5.00(
5
)
Approved Pro

Whitney Homes

3558 Round Barn Blvd Ste 200
5.00(
5
)
Approved Pro
42 years of experience
Free onsite estimate

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 General Contractor 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!

"Exceptional...and that is only one word to descrobe the team from Whitney Homes crew we had a 2 bathrooms renovated and major electrical work done all done in a samll amount of time. Courteous, clean, well-mannered, and respectful of our home. The job that was done wass above our expectation. They described the work to be done to us, gave us a very very good price and did the work. THere was some snags with Home Deopot but the team worked around those issues without us having to do much. Very good will definetly recommend this company for any project you may have in your home. I added two small pics but they also added two new 20 amp circuits because our house was old and couldnt handle the load we were putting on it. The pictures don't do the work they did justice."

Kenneth J on September 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 General Contractor 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!

"Exceptional...and that is only one word to descrobe the team from Whitney Homes crew we had a 2 bathrooms renovated and major electrical work done all done in a samll amount of time. Courteous, clean, well-mannered, and respectful of our home. The job that was done wass above our expectation. They described the work to be done to us, gave us a very very good price and did the work. THere was some snags with Home Deopot but the team worked around those issues without us having to do much. Very good will definetly recommend this company for any project you may have in your home. I added two small pics but they also added two new 20 amp circuits because our house was old and couldnt handle the load we were putting on it. The pictures don't do the work they did justice."

Kenneth J on September 2025


Community First Construction Corp.

1700 Peggy Ct
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Community First Construction Corp.

1700 Peggy Ct
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
18 years of experience
Free onsite estimate

Community First Construction Corp. 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.

Community First Construction Corp. 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.


Wadleigh Group, Inc.

214 Club Drive
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Wadleigh Group, Inc.

214 Club Drive
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
10 local quotes requested
18 years of experience

Wadleigh Group, 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.

Wadleigh Group, 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 Morgan C Winslow A Partnership

Morgan C Winslow A Partnership

8901 Jeannette Avenue
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Morgan C Winslow A Partnership

8901 Jeannette Avenue
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
31 years of experience
Free onsite estimate

Morgan C Winslow A Partnership is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!!!!!

Morgan C Winslow A Partnership is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!!!!!


Big River Builders, Inc.

5510 Skylane Boulevard, Suite 203
4.50(
2
)
Approved Pro

Big River Builders, Inc.

5510 Skylane Boulevard, Suite 203
4.50(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 local quotes requested

BIG RIVER BUILDERS INC offers 40 years experience and the best customer service. We are here to build relationships with our customers and communities. BIG RIVER BUILDERS INC is a leader providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. We believe in building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"The employees were great. A couple of days there was only 1 man on the job due to illness. The company did not replace him, so the 1 man had to work alone, slowing down the completion of the project. Art and Johnny were great to work with. Communication with the office was a little lacking, but overall we are happy with the work."

Bruce J on September 2020

BIG RIVER BUILDERS INC offers 40 years experience and the best customer service. We are here to build relationships with our customers and communities. BIG RIVER BUILDERS INC is a leader providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. We believe in building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"The employees were great. A couple of days there was only 1 man on the job due to illness. The company did not replace him, so the 1 man had to work alone, slowing down the completion of the project. Art and Johnny were great to work with. Communication with the office was a little lacking, but overall we are happy with the work."

Bruce J on September 2020


Pabst Blue Ribbon General Construction

PO Box 753
4.67(
20
)
Approved Pro

Pabst Blue Ribbon General Construction

PO Box 753
4.67(
20
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
13 years of experience

Pabst Blue Ribbon General Construction has the knowledge and integrity that you would expect from your trusted contractor. Specializing in New Construction, Remodels, and any other home improvement project, we have you taken care of. Sit back, relax, and let the professionals take over. We can do anything from the ground up. Give us a call for a free estimate!

"The overall experience was perfect. Friendly and actually listened to me. I had problems with previous work that was done. I hired Mr. Pabst and every single thing was fixed. I was always kept informed. I was shown what they were doing and asked for my approval. Excellent Excellent Excellent."

Cheryl H on August 2024

Pabst Blue Ribbon General Construction has the knowledge and integrity that you would expect from your trusted contractor. Specializing in New Construction, Remodels, and any other home improvement project, we have you taken care of. Sit back, relax, and let the professionals take over. We can do anything from the ground up. Give us a call for a free estimate!

"The overall experience was perfect. Friendly and actually listened to me. I had problems with previous work that was done. I hired Mr. Pabst and every single thing was fixed. I was always kept informed. I was shown what they were doing and asked for my approval. Excellent Excellent Excellent."

Cheryl H on August 2024


Homes West Construction

P.O. Box 2453
2.75(
3
)
Approved Pro

Homes West Construction

P.O. Box 2453
2.75(
3
)
Approved Pro
23 years of experience
Free onsite estimate

Homes West Construction provides top quality work in the Napa area specializing in structural repairs, remodels and new construction. Our professional crew is proficient in all areas of the building process and are dedicated to delivering an excellent product at a competitive price and in a timely fashion.

"Great contractor. He helped to design and pick out fixtures. Excellent work doing my front porch in three weeks."

Robert P on December 2020

Homes West Construction provides top quality work in the Napa area specializing in structural repairs, remodels and new construction. Our professional crew is proficient in all areas of the building process and are dedicated to delivering an excellent product at a competitive price and in a timely fashion.

"Great contractor. He helped to design and pick out fixtures. Excellent work doing my front porch in three weeks."

Robert P on December 2020


Avatar for Logan - Enos Construction, Inc.

Logan - Enos Construction, Inc.

2777 Yulupa Ave Suite 358
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Logan - Enos Construction, Inc.

2777 Yulupa Ave Suite 358
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
8 years of experience
Free onsite estimate

With over 19 years of experience as a General Contractor, Logan - Enos Construction, Inc. 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!

With over 19 years of experience as a General Contractor, Logan - Enos Construction, Inc. 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!


Avatar for America's Dream HomeWorks

America's Dream HomeWorks

7115 Watt Ave
4.09(
172
)
Approved Pro

America's Dream HomeWorks

7115 Watt Ave
4.09(
172
)
Approved Pro
Customers say: Quality work
3327 local quotes requested
24 years of experience

America's Dream HomeWorks Is A Family-Owned Full Service Home Improvement Contractor In California Offering Complete Home Remodeling Services. We Help Homeowners And Property Owners With All Of Their Home Improvement Needs. With The Professional Knowledge And Vast Resources, We Are Able To Provide Our Customers With The Best Products, Unmatched Customer Service And Affordable Prices. Secondary Phone: Secondary 916.739.0996

"If what you are looking for is the best possible upgrade project imaginable in your home, America’s Dream Homeworks is the company you want to hire … period. My wife and I shopped around a few different remodel companies for our master bathroom job. There were several things that set America’s Dream Homeworks (hereafter “ADH”) apart from the competition. First, the quality of the materials. Upon entering their huge showroom floor, you notice that they order and work with huge slabs of rock. We were looking to have our shower walls be made of single large slabs of stone, rather than tile or other patchwork linked together by grout. Grout is the first part of one’s shower to gather mildew, so having a single rock panel for the wall has a marked impact on reducing mildew problems. In addition, the other materials that they work with were all five-star quality as well. After leaving the showroom, we were sold. The only thing that could have made us choose another company at that point would have been poor customer service. However, the service team also left us very impressed. Osa, our in-home design consultant, was incredibly friendly, very informed about all of ADH’s product offerings, and had a very good knack for hearing my wife’s style preferences and finding great solutions for our bathrooms. She took her time taking measurements, and looking through product offerings to find solutions that would work well for our space. Osa presented us with a few different options for materials, at various quality/price tiers, so that we got a very good idea of what our finished job would look like at various price points. My wife of course chose some of the most high-end materials for our job, but it was within the scope of our budget. The entire in-home design consultation was handled thoroughly, methodically, and the end result was a design we knew we were going to love. Great work, Osa! Now we waited. Julie was assigned to be in communication with us during the waiting period and she was diligent about keeping us up to date. ADH had current projects ongoing and needed to make sure those were properly wrapped up. In addition, our materials had to be ordered and some of them had long lead times. Contract was signed in late October 2018. All materials were not received until mid-February 2019. For projects such as this, delays are a reality that must be both expected and worked around, so we were ready to wait. Julie also did a very good job keeping us informed during the waiting period, so we were never left in the dark and always knew what was happening. Mid-February arrived and our installation team was ready to go. Alex, Eric, and Ivan were our main go-to guys for the work. They demoed the bathroom. Upon opening up the walls, one often finds unexpected surprises, and we had a couple, but nothing serious. Within the first week, all of the principle demo work was done and they were ready to start installing. They did the ground work for the install of the various parts of the project, including taking extremely detailed measurements for the stone work. Throughout the entire process, the guys were very sensitive to our needs (we have a two-year-old son, so they were particularly sensitive to his nap and bed times) and they worked super long hours to make sure we stayed on schedule. Demo, patching up, and prep work took about a week and a half to complete. The special stone team came in led by another Alex (different from the Alex taking primary project lead) during week #2, and they were miraculously in and out in a single day. There was one panel in the master bathroom that they could not install on that day because we ordered a jacuzzi tub, so they needed the space open to access the wiring for the motor installation. Overall, though, we couldn’t believe that they did the stone work so incredibly fast. Also, the resulting fit and finish is super professional. It is extremely difficult to tell where two rock panels are cut and bonded together because of the seamless way they sealed the pieces up. Also, they did an amazing job matching the rock patterns from panel to panel, such that even where two separate panels are adjoining, the patterns flow from one to the other almost seamlessly. It was a fantastic install job! Week #3 rolled around and the team did some more basic patching work, including hooking up the sink hardware and installing our new toilets. However, this was a quiet work week as they scheduled some other install projects and gave some time for the rock sealing to set-up properly. Week #4 they knocked out the countertop, new sink hardware, and backsplash in our guest bathroom. Two-day turnaround for that. Then, they moved back into the master bath, installed the tub, put the final rock panel in place (complete with stone access door for the tub motor), and grouted the shower floor. Only the glass and some final patch-work remained to be done. There were a couple of additional delays for the glass delivery, which took two weeks, but again we knew that delays like this are commonplace for a project like this, so we took it in stride. Also, we were able to start using our jacuzzi tub and shower even though the glass wasn’t in yet, so we could start enjoying our new space while we waited … and enjoy it we did! Once delivered, the glass was installed in just two hours, and as of this morning all of the finishing touches were put in by Ivan, we passed city inspection, and happily shook hands with the team congratulating them on a job well done. Our finished bathrooms are … well … the company is called America’s Dream Homeworks for a reason … our finished project is like a dream come true. My wife and I now have our own personal luxury spa in our own home, complete with jacuzzi tub, overhead rain shower (with detachable spray handle that we can hold and modulate water pressure to while still getting rain shower from above), gorgeous rock walls with beautiful clear tempered glass enclosing the shower, and brand new countertops with deep sinks. We only did half of our guest bathroom. When we finish that project (need to remodel the shower space as only the counter tops were done in there) we will be calling ADH back. Overall 5-star work. 5-stars on the finished job. 5-stars on the customer service at all levels. 5-stars on the quality of the materials. 5-stars on the communication before and during the job. 5-stars on the professionalism and friendliness of our install teams. I can’t use enough superlatives for this company, for its people, and for the top tier quality of their workmanship. I say again here to close what I said at the beginning … if what you are looking for is the best possible upgrade project imaginable in your home, America’s Dream Homeworks is the company you want to hire. We could not be happier with the result. We will be calling them again in the future."

Daniel C on March 2019

America's Dream HomeWorks Is A Family-Owned Full Service Home Improvement Contractor In California Offering Complete Home Remodeling Services. We Help Homeowners And Property Owners With All Of Their Home Improvement Needs. With The Professional Knowledge And Vast Resources, We Are Able To Provide Our Customers With The Best Products, Unmatched Customer Service And Affordable Prices. Secondary Phone: Secondary 916.739.0996

"If what you are looking for is the best possible upgrade project imaginable in your home, America’s Dream Homeworks is the company you want to hire … period. My wife and I shopped around a few different remodel companies for our master bathroom job. There were several things that set America’s Dream Homeworks (hereafter “ADH”) apart from the competition. First, the quality of the materials. Upon entering their huge showroom floor, you notice that they order and work with huge slabs of rock. We were looking to have our shower walls be made of single large slabs of stone, rather than tile or other patchwork linked together by grout. Grout is the first part of one’s shower to gather mildew, so having a single rock panel for the wall has a marked impact on reducing mildew problems. In addition, the other materials that they work with were all five-star quality as well. After leaving the showroom, we were sold. The only thing that could have made us choose another company at that point would have been poor customer service. However, the service team also left us very impressed. Osa, our in-home design consultant, was incredibly friendly, very informed about all of ADH’s product offerings, and had a very good knack for hearing my wife’s style preferences and finding great solutions for our bathrooms. She took her time taking measurements, and looking through product offerings to find solutions that would work well for our space. Osa presented us with a few different options for materials, at various quality/price tiers, so that we got a very good idea of what our finished job would look like at various price points. My wife of course chose some of the most high-end materials for our job, but it was within the scope of our budget. The entire in-home design consultation was handled thoroughly, methodically, and the end result was a design we knew we were going to love. Great work, Osa! Now we waited. Julie was assigned to be in communication with us during the waiting period and she was diligent about keeping us up to date. ADH had current projects ongoing and needed to make sure those were properly wrapped up. In addition, our materials had to be ordered and some of them had long lead times. Contract was signed in late October 2018. All materials were not received until mid-February 2019. For projects such as this, delays are a reality that must be both expected and worked around, so we were ready to wait. Julie also did a very good job keeping us informed during the waiting period, so we were never left in the dark and always knew what was happening. Mid-February arrived and our installation team was ready to go. Alex, Eric, and Ivan were our main go-to guys for the work. They demoed the bathroom. Upon opening up the walls, one often finds unexpected surprises, and we had a couple, but nothing serious. Within the first week, all of the principle demo work was done and they were ready to start installing. They did the ground work for the install of the various parts of the project, including taking extremely detailed measurements for the stone work. Throughout the entire process, the guys were very sensitive to our needs (we have a two-year-old son, so they were particularly sensitive to his nap and bed times) and they worked super long hours to make sure we stayed on schedule. Demo, patching up, and prep work took about a week and a half to complete. The special stone team came in led by another Alex (different from the Alex taking primary project lead) during week #2, and they were miraculously in and out in a single day. There was one panel in the master bathroom that they could not install on that day because we ordered a jacuzzi tub, so they needed the space open to access the wiring for the motor installation. Overall, though, we couldn’t believe that they did the stone work so incredibly fast. Also, the resulting fit and finish is super professional. It is extremely difficult to tell where two rock panels are cut and bonded together because of the seamless way they sealed the pieces up. Also, they did an amazing job matching the rock patterns from panel to panel, such that even where two separate panels are adjoining, the patterns flow from one to the other almost seamlessly. It was a fantastic install job! Week #3 rolled around and the team did some more basic patching work, including hooking up the sink hardware and installing our new toilets. However, this was a quiet work week as they scheduled some other install projects and gave some time for the rock sealing to set-up properly. Week #4 they knocked out the countertop, new sink hardware, and backsplash in our guest bathroom. Two-day turnaround for that. Then, they moved back into the master bath, installed the tub, put the final rock panel in place (complete with stone access door for the tub motor), and grouted the shower floor. Only the glass and some final patch-work remained to be done. There were a couple of additional delays for the glass delivery, which took two weeks, but again we knew that delays like this are commonplace for a project like this, so we took it in stride. Also, we were able to start using our jacuzzi tub and shower even though the glass wasn’t in yet, so we could start enjoying our new space while we waited … and enjoy it we did! Once delivered, the glass was installed in just two hours, and as of this morning all of the finishing touches were put in by Ivan, we passed city inspection, and happily shook hands with the team congratulating them on a job well done. Our finished bathrooms are … well … the company is called America’s Dream Homeworks for a reason … our finished project is like a dream come true. My wife and I now have our own personal luxury spa in our own home, complete with jacuzzi tub, overhead rain shower (with detachable spray handle that we can hold and modulate water pressure to while still getting rain shower from above), gorgeous rock walls with beautiful clear tempered glass enclosing the shower, and brand new countertops with deep sinks. We only did half of our guest bathroom. When we finish that project (need to remodel the shower space as only the counter tops were done in there) we will be calling ADH back. Overall 5-star work. 5-stars on the finished job. 5-stars on the customer service at all levels. 5-stars on the quality of the materials. 5-stars on the communication before and during the job. 5-stars on the professionalism and friendliness of our install teams. I can’t use enough superlatives for this company, for its people, and for the top tier quality of their workmanship. I say again here to close what I said at the beginning … if what you are looking for is the best possible upgrade project imaginable in your home, America’s Dream Homeworks is the company you want to hire. We could not be happier with the result. We will be calling them again in the future."

Daniel C on March 2019

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

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Saint Helena, 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.

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