Top-rated second story addition builders.

Get matched with top second story addition builders in your area

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Second story addition builders in Walnut Creek

Avatar for Madera Craftsman
Madera Craftsman
4834 Silverado Drive
5.00(
2
)
Approved Pro
Madera Craftsman
4834 Silverado Drive
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
663 local quotes requested

Whether building your dream home from the ground up or adding to something you already love, we are with you every step of the way. As a family owned and operated business, we work hard to make your home the backdrop for memories you will cherish forever.

"Adam was professional and courteous. Work was high quality, reasonably priced, and completed in a timely manner according to our agreed-on schedule. I look forward to having Adam perform additional remodeling tasks in my home."

Stephen K on January 2025

Whether building your dream home from the ground up or adding to something you already love, we are with you every step of the way. As a family owned and operated business, we work hard to make your home the backdrop for memories you will cherish forever.

"Adam was professional and courteous. Work was high quality, reasonably priced, and completed in a timely manner according to our agreed-on schedule. I look forward to having Adam perform additional remodeling tasks in my home."

Stephen K on January 2025


Avatar for Geico Builders
Geico Builders
1901 Harrison Street
5.00(
18
)
Approved Pro
Geico Builders
1901 Harrison Street
5.00(
18
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1472 local quotes requested

Geico Builders specializes in meeting your expectations before, during, and after the project is complete. Our most upstanding quality is our accountability--you can expect us to own the work we complete for your home. Of course, we know accountability means nothing without proof, which is why we are happy to offer a 2-year workmanship warranty to all of our clients. This is a rare quality for this industry, but we wanted to prove to you that we stand by our craftsmanship through our home remodeling construction services. Every Crew at Geico Builders has been professionally trained and will treat your home with integrity and respect.

"We are completely satisfied with our backyard, where we wanted to do a complete renovation, making our yard more beautiful and usable, for games with friends, easy access for my dogs and everything else! From the beginning Brian helped us with the choice of materials, locations, colors and many great suggestions. Our Project Manager, Delmar, and Brian did an excellent job updating us and communicating and always responded quickly to any questions or concerns. We had a tight deadline for our project because we wanted to finish before 06/01 - he did our entire project quickly and efficiently! I want to thank you very much, I am very happy, I recommend Geico Builders and together with Brian for all your projects! I hope to work with him soon on our front yard, after all I only have good things to say!"

Mark S on June 2025

Geico Builders specializes in meeting your expectations before, during, and after the project is complete. Our most upstanding quality is our accountability--you can expect us to own the work we complete for your home. Of course, we know accountability means nothing without proof, which is why we are happy to offer a 2-year workmanship warranty to all of our clients. This is a rare quality for this industry, but we wanted to prove to you that we stand by our craftsmanship through our home remodeling construction services. Every Crew at Geico Builders has been professionally trained and will treat your home with integrity and respect.

"We are completely satisfied with our backyard, where we wanted to do a complete renovation, making our yard more beautiful and usable, for games with friends, easy access for my dogs and everything else! From the beginning Brian helped us with the choice of materials, locations, colors and many great suggestions. Our Project Manager, Delmar, and Brian did an excellent job updating us and communicating and always responded quickly to any questions or concerns. We had a tight deadline for our project because we wanted to finish before 06/01 - he did our entire project quickly and efficiently! I want to thank you very much, I am very happy, I recommend Geico Builders and together with Brian for all your projects! I hope to work with him soon on our front yard, after all I only have good things to say!"

Mark S on June 2025


Avatar for PR CONSTRUCTION GROUP
PR CONSTRUCTION GROUP
New on HomeAdvisorNew on Angi
Approved Pro
PR CONSTRUCTION GROUP
New on AngiNew on HomeAdvisor
Approved Pro
1 years of experience
Free onsite estimate

We specialize in interior remodels, cabinetry, painting, flooring. We do everything with quality and at a great price.

We specialize in interior remodels, cabinetry, painting, flooring. We do everything with quality and at a great price.


JCC Residential Remodeling & Maintenance
2318 106th Ave
5.00(
2
)
Approved Pro
JCC Residential Remodeling & Maintenance
2318 106th Ave
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3762 local quotes requested

We offer everything from residential repairs to full kitchen and bathroom remodeling! We pride ourselves on our over twenty years of experience and offer 100% satisfaction. Contact us for free quotes!

"Excellent! I thought I needed a new thermostat since I wasn’t getting any heat. Juan came over , checked the circuit breaker and found that the breaker was worn out. He replaced the breaker and found that the thermostat was still functioning. He could have said that the thermostat needed replacing too but instead he just said you needed a new circuit breaker. I really appreciated the honesty. If he said I needed the thermostat too I would have paid for both thus increasing my bill. I just want to add a few more comments about the work that he’s done for me. I first met Juan when he came over to my house to stabilize a lose tile that was above my garage door. Then I showed him mold growing next to my shower door. He found a small crack that allowed water to seep into the sheet rock. He replaced the shower door and the sheet rock that was growing mold. Then I took him to the bathroom where I showed him a bulging floor board next to the toilet. He found a small crack in the toilet tank that slowly dripped water on to the backside of toilet dripping water onto the base board. He offered to repair the tank but I told him to go ahead and replace the toilet. I can’t say enough about Juan. Whatever the problem is he’ll figure out how to fix it. When he approaches a problem he approaches with a positive attitude. Another time my ceiling fan went out and I asked him to come out to see what the problem was. Instead over the phone he told me to check the remote control. I went on Amazon and ordered a new remote control . I placed in new batteries and the fan started working. He didn’t charge me anything for the advice. I was prepared to buy a new fan and all I needed was a new remote. Juan is multi talented. I’ve recommend him to my neighbor and he’s done a couple of projects for her (leaking roof). Lastly, in a couple of weeks he’s coming over to paint my front door and put a new latch on my side gate. I’m 77 years with an injured leg so fixing things around the house is difficult for me. Juan has made my life easier."

Calvin C on February 2025

We offer everything from residential repairs to full kitchen and bathroom remodeling! We pride ourselves on our over twenty years of experience and offer 100% satisfaction. Contact us for free quotes!

"Excellent! I thought I needed a new thermostat since I wasn’t getting any heat. Juan came over , checked the circuit breaker and found that the breaker was worn out. He replaced the breaker and found that the thermostat was still functioning. He could have said that the thermostat needed replacing too but instead he just said you needed a new circuit breaker. I really appreciated the honesty. If he said I needed the thermostat too I would have paid for both thus increasing my bill. I just want to add a few more comments about the work that he’s done for me. I first met Juan when he came over to my house to stabilize a lose tile that was above my garage door. Then I showed him mold growing next to my shower door. He found a small crack that allowed water to seep into the sheet rock. He replaced the shower door and the sheet rock that was growing mold. Then I took him to the bathroom where I showed him a bulging floor board next to the toilet. He found a small crack in the toilet tank that slowly dripped water on to the backside of toilet dripping water onto the base board. He offered to repair the tank but I told him to go ahead and replace the toilet. I can’t say enough about Juan. Whatever the problem is he’ll figure out how to fix it. When he approaches a problem he approaches with a positive attitude. Another time my ceiling fan went out and I asked him to come out to see what the problem was. Instead over the phone he told me to check the remote control. I went on Amazon and ordered a new remote control . I placed in new batteries and the fan started working. He didn’t charge me anything for the advice. I was prepared to buy a new fan and all I needed was a new remote. Juan is multi talented. I’ve recommend him to my neighbor and he’s done a couple of projects for her (leaking roof). Lastly, in a couple of weeks he’s coming over to paint my front door and put a new latch on my side gate. I’m 77 years with an injured leg so fixing things around the house is difficult for me. Juan has made my life easier."

Calvin C on February 2025


Avatar for Accurate Home Remodeling
Accurate Home Remodeling
52 Golf Club Rd #144
New on HomeAdvisorNew on Angi
Approved Pro
Accurate Home Remodeling
52 Golf Club Rd #144
New on AngiNew on HomeAdvisor
Approved Pro
745 local quotes requested

Accurate Home Remodeling services the San Francisco Bay Area. Driven by years of accumulated experience, we’re a fully licensed, bonded, and insured company offering full construction services ranging from kitchen & bathroom remodeling, exteriors, home additions, and much more. Your assigned estimating designer will sit down with you during the complimentary consultation to help you establish an optimal layout and overall vision for the project at hand. Following the consultation, we can create 3D renders to allow you to preview your newly renovated space. Our approach is to work side by side with you to select material at the best locations around the bay area to make your concepts become a reality. Call or 'click' for a FREE estimate today!

Accurate Home Remodeling services the San Francisco Bay Area. Driven by years of accumulated experience, we’re a fully licensed, bonded, and insured company offering full construction services ranging from kitchen & bathroom remodeling, exteriors, home additions, and much more. Your assigned estimating designer will sit down with you during the complimentary consultation to help you establish an optimal layout and overall vision for the project at hand. Following the consultation, we can create 3D renders to allow you to preview your newly renovated space. Our approach is to work side by side with you to select material at the best locations around the bay area to make your concepts become a reality. Call or 'click' for a FREE estimate today!


Avatar for Zacarias Remodeling Construction
Zacarias Remodeling Construction
1320 Paso De Sauce RD
5.00(
28
)
Approved Pro
Zacarias Remodeling Construction
1320 Paso De Sauce RD
5.00(
28
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1390 local quotes requested

We are a locally owned and operated company since 2009, with lots of industry experience. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other Home Improvement projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction! We are a bilingual company, and are happy to serve both our English and Spanish Speaking communities! ¡Hablamos Espanol!

"Oscar truly stands out as a contractor who cares deeply about his clients, and that’s exactly how he made me feel. I reached out to five different contractors to assess my bathroom and offer ideas, but my experiences varied significantly. Some were overly sales-driven, others dismissed my ideas entirely, and one didn’t even follow up with an estimate. Oscar, however, was a breath of fresh air. He arrived on time, listened attentively to my ideas, and offered thoughtful suggestions. He was highly collaborative with the other workers on site, making sure everything was well coordinated. Oscar's expertise in the industry is evident, and he’s exceptionally creative when it comes to problem-solving. When he identified additional challenges during the project, he took the time to offer practical solutions, demonstrating his commitment to delivering the best result. Oscar has earned my trust and will be my go-to contractor for any future projects. I highly recommend him to anyone in need of a reliable, skilled, and dedicated professional"

Lisa N on March 2025

We are a locally owned and operated company since 2009, with lots of industry experience. We specialize in Additions and Kitchen Remodels, but also offer a wide range of expertise for a variety of other Home Improvement projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction! We are a bilingual company, and are happy to serve both our English and Spanish Speaking communities! ¡Hablamos Espanol!

"Oscar truly stands out as a contractor who cares deeply about his clients, and that’s exactly how he made me feel. I reached out to five different contractors to assess my bathroom and offer ideas, but my experiences varied significantly. Some were overly sales-driven, others dismissed my ideas entirely, and one didn’t even follow up with an estimate. Oscar, however, was a breath of fresh air. He arrived on time, listened attentively to my ideas, and offered thoughtful suggestions. He was highly collaborative with the other workers on site, making sure everything was well coordinated. Oscar's expertise in the industry is evident, and he’s exceptionally creative when it comes to problem-solving. When he identified additional challenges during the project, he took the time to offer practical solutions, demonstrating his commitment to delivering the best result. Oscar has earned my trust and will be my go-to contractor for any future projects. I highly recommend him to anyone in need of a reliable, skilled, and dedicated professional"

Lisa N on March 2025


Avatar for Be Home Remodeling Inc
Be Home Remodeling Inc
84 West Santa Clara Street
5.00(
3
)
Approved Pro
Be Home Remodeling Inc
84 West Santa Clara Street
5.00(
3
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1756 local quotes requested

***346 PROJECTS/24 IN PROGRESS/322 COMPLETED**YOUR DREAM REMODEL AWAITS. LET'S MAKE IT HOME!** Welcome to Be Home Remodeling! We specialize in transforming homes with expert craftsmanship, innovative designs, and personalized solutions. into dream We turn houses into dream homes. With a commitment to quality craftsmanship and personalized service, we bring your vision to life, creating spaces that reflect your style and meet your needs. From kitchens to full-home remodels, we bring your vision to life, creating beautiful, functional spaces you’ll love. eHome Remodeling was founded by Benjamin, who leads our team with over 10 years of experience transforming homes across the Bay Area. We specialize in everything from detailed kitchen remodels to full-scale renovations, ensuring each space perfectly reflects your unique vision and lifestyle. At BeHome, we prioritize transparent communication, meticulous planning, and quality craftsmanship, working closely with you at every stage to create a space you’ll love coming home to. Contact us today for your FREE estimate by calling 408-616-4989 or click the request a quote link!

"Appreciate the great communication, Benjamin and his team was professional, clean after themselves and was delivering what was promised. Will definitely hire them again Thank you!"

Liran Salesman b on December 2024

***346 PROJECTS/24 IN PROGRESS/322 COMPLETED**YOUR DREAM REMODEL AWAITS. LET'S MAKE IT HOME!** Welcome to Be Home Remodeling! We specialize in transforming homes with expert craftsmanship, innovative designs, and personalized solutions. into dream We turn houses into dream homes. With a commitment to quality craftsmanship and personalized service, we bring your vision to life, creating spaces that reflect your style and meet your needs. From kitchens to full-home remodels, we bring your vision to life, creating beautiful, functional spaces you’ll love. eHome Remodeling was founded by Benjamin, who leads our team with over 10 years of experience transforming homes across the Bay Area. We specialize in everything from detailed kitchen remodels to full-scale renovations, ensuring each space perfectly reflects your unique vision and lifestyle. At BeHome, we prioritize transparent communication, meticulous planning, and quality craftsmanship, working closely with you at every stage to create a space you’ll love coming home to. Contact us today for your FREE estimate by calling 408-616-4989 or click the request a quote link!

"Appreciate the great communication, Benjamin and his team was professional, clean after themselves and was delivering what was promised. Will definitely hire them again Thank you!"

Liran Salesman b on December 2024


Avatar for MGM Construction
MGM Construction
642 Dixie Lane
5.00(
7
)
Approved Pro
MGM Construction
642 Dixie Lane
5.00(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
396 local quotes requested

We specialize in Kitchen and Bathroom renovations, along with Electrical, plumbing, flooring, custom cabinetry, and more! . We have industry experience since the 1990's and started our own company in 2022. We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"MGM Construction provided excellent work. Adolfo and Gerardo were responsive and dependable. They completed the work in the time allotted and were willing to complete other house repairs such as floor sanding, window and ceiling repairs, etc. The brothers are so easy to talk with and provided valuable professional advice. Their pricing is reasonable and fair. We will hire them again and highly recommend them to others."

Eleanor T on February 2025

We specialize in Kitchen and Bathroom renovations, along with Electrical, plumbing, flooring, custom cabinetry, and more! . We have industry experience since the 1990's and started our own company in 2022. We offer a diverse range of services tailored to meet the unique needs of every customer. We take a personalized approach to each project. We work closely with our clients to understand their vision, preferences, and budgetary requirements. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"MGM Construction provided excellent work. Adolfo and Gerardo were responsive and dependable. They completed the work in the time allotted and were willing to complete other house repairs such as floor sanding, window and ceiling repairs, etc. The brothers are so easy to talk with and provided valuable professional advice. Their pricing is reasonable and fair. We will hire them again and highly recommend them to others."

Eleanor T on February 2025


Avatar for A1 Quality Contractor Inc
A1 Quality Contractor Inc
Pleasanton CA 94588
5.00(
4
)
Approved Pro
A1 Quality Contractor Inc
Pleasanton CA 94588
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
282 local quotes requested

At A1 Quality Contractor Inc., we are dedicated to delivering exceptional craftsmanship and customer service on every project. With over 15 years of experience, we specialize in ADU construction, home remodeling, and full-service general contracting in the Bay Area, including San Ramon, Danville, Walnut Creek, and surrounding cities. Our story began with a simple mission: to transform homes and spaces into personalized, functional living areas that meet the unique needs of each client. Over the years, we’ve built a reputation for excellence, reliability, and integrity, making us a trusted partner for homeowners and businesses alike. See photos of our work at www.a1qualitycontractor.com

"I am happy to recommend Deshawn Garcia and A1 Quality Contractor for any construction or remodeling project. One thing that stood out was his great communication. He kept us updated every step of the way and really cared about making sure we were happy with the results. He managed the project well and was always open to changes, showing flexibility when we needed adjustments. He and his crew did an amazing job keeping our home clean during construction. They covered our flooring and vacuumed the stairs every day, making sure the mess was under control. His team was also very knowledgeable, hardworking, and experienced, delivering high-quality results at a great value."

Bryan V on March 2025

At A1 Quality Contractor Inc., we are dedicated to delivering exceptional craftsmanship and customer service on every project. With over 15 years of experience, we specialize in ADU construction, home remodeling, and full-service general contracting in the Bay Area, including San Ramon, Danville, Walnut Creek, and surrounding cities. Our story began with a simple mission: to transform homes and spaces into personalized, functional living areas that meet the unique needs of each client. Over the years, we’ve built a reputation for excellence, reliability, and integrity, making us a trusted partner for homeowners and businesses alike. See photos of our work at www.a1qualitycontractor.com

"I am happy to recommend Deshawn Garcia and A1 Quality Contractor for any construction or remodeling project. One thing that stood out was his great communication. He kept us updated every step of the way and really cared about making sure we were happy with the results. He managed the project well and was always open to changes, showing flexibility when we needed adjustments. He and his crew did an amazing job keeping our home clean during construction. They covered our flooring and vacuumed the stairs every day, making sure the mess was under control. His team was also very knowledgeable, hardworking, and experienced, delivering high-quality results at a great value."

Bryan V on March 2025


Avatar for Al Navarro Construction
Al Navarro Construction
PO Box 2636
4.75(
59
)
Approved Pro
Al Navarro Construction
PO Box 2636
4.75(
59
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
136 local quotes requested

Licensed General Building Contractor with over 30 years in the building trades, I'm focused on providing bathroom remodels and custom home improvement services with the highest levels of customer satisfaction.

"We love our new kitchen and flooring, and new powder room! Al is extremely professional. He takes time to ensure everything is done beautifully. He communicates well to make sure that all expectations are accurate. Payment schedule is clear and concise. He is helpful in providing options and suggestions for complications that arise or just for choosing paint color or tile layout. We would trust Al to do any project that is needed. His work really is impeccable."

Debbie K on January 2025

Licensed General Building Contractor with over 30 years in the building trades, I'm focused on providing bathroom remodels and custom home improvement services with the highest levels of customer satisfaction.

"We love our new kitchen and flooring, and new powder room! Al is extremely professional. He takes time to ensure everything is done beautifully. He communicates well to make sure that all expectations are accurate. Payment schedule is clear and concise. He is helpful in providing options and suggestions for complications that arise or just for choosing paint color or tile layout. We would trust Al to do any project that is needed. His work really is impeccable."

Debbie K on January 2025

...
Showing 1-10 of 965

FAQs for second story addition building service projects in Walnut Creek, CA

Converting a vaulted ceiling into a second floor requires three to six months from planning to completion. The process begins with several weeks of design and engineering, followed by permit applications, which vary in processing time by location. 

Construction itself spans several months, including framing, systems installation, and finishing work. Weather conditions, contractor availability, and inspection schedules can all influence your project timeline.

Several factors could make your conversion challenging or impossible. Inadequate roof support structures, insufficient foundation capacity, or problematic truss configurations might require prohibitively expensive modifications. 

Some homes lack the minimum ceiling height (12 feet at the lowest point) needed for functional second-floor spaces. Building code restrictions in your area might also limit conversion possibilities, particularly in historic districts or homes with specific architectural designations.

Begin with professional assessments from both an architect and a structural engineer who will evaluate your home's specific characteristics. They'll examine existing framing, measure available headroom, assess load-bearing capacity, and identify potential obstacles like HVAC ducts or plumbing vents. 

These experts will also review local building codes to determine feasibility. Their preliminary analysis provides crucial information about structural requirements and potential limitations before you commit to the project.

Whether you'll need temporary housing depends on several factors, including the project's scope and your tolerance for construction disruption. Major structural work creates significant noise, dust, and potential utility interruptions that many families find challenging to live with. Safety concerns may also arise during certain construction phases. 

Some homeowners successfully remain by isolating the construction zone and establishing clear work schedules. Discuss living arrangements with your contractor early in the planning process to make informed decisions.

The Walnut Creek, CA homeowners’ guide to second story addition building services
From average costs to expert advice, get all the answers you need to get your job done.
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.
BLUE TWO STORY HOME
Apr 30, 2025
Apr 30, 2025
Budget for the cost to add a second story based on factors such as size, foundation work, materials, labor, permits, post-construction cleaning, and more.
small bathroom that has been updated in a remodel
Apr 29, 2025
Apr 29, 2025
Budget for the cost to remodel a small bathroom based on factors such as required fixtures, bathroom size, labor, remodel type, site prep, and more.
guest house in the backyard
Apr 27, 2025
Apr 27, 2025
Need to build a guest house? Here’s how much it costs, what factors affect cost, and what to expect.
Share project details to get started.