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Find Addition to existing structure builders in Lake Forest

Avatar for IJH Construction, Inc.

IJH Construction, Inc.

110 W Avenida Cordoba
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

IJH Construction, Inc.

110 W Avenida Cordoba
New on HomeAdvisorNew 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.


Avatar for Elias Amparano Remodeling

Elias Amparano Remodeling

3752 Costa Del Rey
5.00(
2
)
Approved Pro

Elias Amparano Remodeling

3752 Costa Del Rey
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Licensed Contractor, we are a small company but deliver big results, let us give you a quality project for less. We offer 12 month 0 % financing OAC. We accept all major credit cards. We also handle all insurance loss claims with our own in house adjuster. Call us before or after a lose and let us get you what you deserve, before you say yes, let us give you a second opinion we have acquired our customers thousands of dollars more on their claims.

"Easy to work with, fantastic results. The finish on our saltillo tile floors had badly deteriorated and they were able to ressurect it. And their price was quite reasonable."

Ric W on November 2023

Licensed Contractor, we are a small company but deliver big results, let us give you a quality project for less. We offer 12 month 0 % financing OAC. We accept all major credit cards. We also handle all insurance loss claims with our own in house adjuster. Call us before or after a lose and let us get you what you deserve, before you say yes, let us give you a second opinion we have acquired our customers thousands of dollars more on their claims.

"Easy to work with, fantastic results. The finish on our saltillo tile floors had badly deteriorated and they were able to ressurect it. And their price was quite reasonable."

Ric W on November 2023


Pacific Pipeline

67 Bentwood Ln
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Pacific Pipeline

67 Bentwood Ln
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
17 years of experience
Free onsite estimate

We are 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.

We are 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 Finish Jobs Construction

Finish Jobs Construction

32726 Wesley Street
5.00(
10
)
Approved Pro

Finish Jobs Construction

32726 Wesley Street
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
20 years of experience

Finish Jobs Construction focuses on customer service and building long-term relationships. We uphold a standard of integrity bound by fairness, honesty, and responsibility in all of our jobs. We are a locally owned and operated business with more than 13 years of experience serving Wildomar and surrounding areas. There is no job too big or too small for our team.

"Awesome experience. I will hire them for all my future projects. You should too, you will not regret it. They saved me a lot of money by repairing items that other companies wanted to replace. A++"

Desmond B on September 2021

Finish Jobs Construction focuses on customer service and building long-term relationships. We uphold a standard of integrity bound by fairness, honesty, and responsibility in all of our jobs. We are a locally owned and operated business with more than 13 years of experience serving Wildomar and surrounding areas. There is no job too big or too small for our team.

"Awesome experience. I will hire them for all my future projects. You should too, you will not regret it. They saved me a lot of money by repairing items that other companies wanted to replace. A++"

Desmond B on September 2021


Avatar for Socal Express Restoration and Construction Inc.

Socal Express Restoration and Construction Inc.

6860 Canby Avenue, Suite 114
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Socal Express Restoration and Construction Inc.

6860 Canby Avenue, Suite 114
New on HomeAdvisorNew 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


Avatar for EYE 4 DESIGN

EYE 4 DESIGN

4853 AVOCA ST
4.95(
66
)
Approved Pro

EYE 4 DESIGN

4853 AVOCA ST
4.95(
66
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
21 local quotes requested

Eye 4 Design and Renovation is a small remodeling company based in Eagle Rock, CA. We pride ourselves on our high level of construction detail and our excellent customer service. Eye 4 covers all of Los Angeles County. We have many project references and some are willing to share our work in person. Our system is set up to maximize quality at realistic pricing. We are fully licensed and carry a 2 million dollar general liability policy. All of our staff are expected to be courteous and easy to communicate with. Our people are our strength. We are highly knowledgeable and experienced in Los Angeles construction. LIC#878235

"I love this crew. Nick, Jake and a rotating cast of experts remodeled my bathroom, attic and did other smaller projects in my house. I work from home, so rapport and trust, while always important, were imperative to such a long scope. The kitchen turned out so well, we felt like we had a thought partner and someone who could think outside of the typical contractor box. It's opened our home up so much and was worth every penny and every extra day."

Beth C on May 2023

Eye 4 Design and Renovation is a small remodeling company based in Eagle Rock, CA. We pride ourselves on our high level of construction detail and our excellent customer service. Eye 4 covers all of Los Angeles County. We have many project references and some are willing to share our work in person. Our system is set up to maximize quality at realistic pricing. We are fully licensed and carry a 2 million dollar general liability policy. All of our staff are expected to be courteous and easy to communicate with. Our people are our strength. We are highly knowledgeable and experienced in Los Angeles construction. LIC#878235

"I love this crew. Nick, Jake and a rotating cast of experts remodeled my bathroom, attic and did other smaller projects in my house. I work from home, so rapport and trust, while always important, were imperative to such a long scope. The kitchen turned out so well, we felt like we had a thought partner and someone who could think outside of the typical contractor box. It's opened our home up so much and was worth every penny and every extra day."

Beth C on May 2023


Avatar for UZUN CONSTRUCTION

UZUN CONSTRUCTION

15 Canyon Sage
5.00(
3
)
Approved Pro

UZUN CONSTRUCTION

15 Canyon Sage
5.00(
3
)
Approved Pro
9 years of experience
Free onsite estimate

Looking for a contractor you can trust? Uzun Construction is a family-owned, licensed California General Contractor (B) serving Orange County and nearby areas. With over 40 years of international experience, we bring craftsmanship, clear communication, and a personal touch to every project. From quick repairs and kitchen/bath updates to additions, ADUs, and custom homes, we handle it all—permits, trusted trade partners, and clean jobsites included. Our detailed bids, visible schedules, and regular updates mean no surprises, just quality work you can rely on. Big or small, your project is in good hands with our family.

"I moved into Sherbourne condos a couple yaers ago, and the quality really stands out. The layout makes great use of space, and the natural light through the big windows gives it a warm, open feel. The finishes are clean and modern — from the millwork to the stone bathrooms — and everything feels thoughtfully built."

Abigail K on November 2025

Looking for a contractor you can trust? Uzun Construction is a family-owned, licensed California General Contractor (B) serving Orange County and nearby areas. With over 40 years of international experience, we bring craftsmanship, clear communication, and a personal touch to every project. From quick repairs and kitchen/bath updates to additions, ADUs, and custom homes, we handle it all—permits, trusted trade partners, and clean jobsites included. Our detailed bids, visible schedules, and regular updates mean no surprises, just quality work you can rely on. Big or small, your project is in good hands with our family.

"I moved into Sherbourne condos a couple yaers ago, and the quality really stands out. The layout makes great use of space, and the natural light through the big windows gives it a warm, open feel. The finishes are clean and modern — from the millwork to the stone bathrooms — and everything feels thoughtfully built."

Abigail K on November 2025


Avatar for Prime Construction Services, Inc.

Prime Construction Services, Inc.

865 S. Milliken Ave., Unit A
5.00(
2
)
Approved Pro

Prime Construction Services, Inc.

865 S. Milliken Ave., Unit A
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 years of experience

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! ************ VISIT OUR VIRTUAL TOUR ************** https://players.cupix.com/p/BEWLWLeq *************** COPY & PASTE THIS ADDRESS TO YOUR BROWSER

"Andrew Farias was very professional. He was extremely detailed and finished my ADU right within out agreed price. Andrew was always available to answer any questions and was always very responsive to my emails and texts. He kept me well informed at each phase of my project. The quality of his work was top notch and i feel he went above and beyond. My ADU turned out better than i could have imagined and i would absolutely hire him again. I highly recommend Andrew and Prime Construction ."

Kimberly N on March 2022

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! ************ VISIT OUR VIRTUAL TOUR ************** https://players.cupix.com/p/BEWLWLeq *************** COPY & PASTE THIS ADDRESS TO YOUR BROWSER

"Andrew Farias was very professional. He was extremely detailed and finished my ADU right within out agreed price. Andrew was always available to answer any questions and was always very responsive to my emails and texts. He kept me well informed at each phase of my project. The quality of his work was top notch and i feel he went above and beyond. My ADU turned out better than i could have imagined and i would absolutely hire him again. I highly recommend Andrew and Prime Construction ."

Kimberly N on March 2022


Avatar for Ace Restoration and Construction, Inc.

Ace Restoration and Construction, Inc.

1153
5.00(
10
)
Approved Pro

Ace Restoration and Construction, Inc.

1153
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
20 local quotes requested

We are here to accomplish your dreams, or help you design them. We take pride in our experience and execution of your project. We have over 16 years of experience and opened Ace Restoration and Construction in 2017. We opened with the intension to give the customer a different experience in renovating their homes. Whether we are doing a kitchen remodel or an entire gut renovation, we strive for a positive experience so we can be your family contractors for all future projects. We specialize in everything residential, interior and exterior down to new pool build. We love what we do and it shows in our work.

"Back neighbor fence was horrible and unfortunately they were renters. We added on these vinyl fencing to our home and she did an amazing job. Very detailed and told us we should do concrete for the post so it’ll hold better. Highly recommended. Thanks Cheree for everything."

Michael H on December 2024

We are here to accomplish your dreams, or help you design them. We take pride in our experience and execution of your project. We have over 16 years of experience and opened Ace Restoration and Construction in 2017. We opened with the intension to give the customer a different experience in renovating their homes. Whether we are doing a kitchen remodel or an entire gut renovation, we strive for a positive experience so we can be your family contractors for all future projects. We specialize in everything residential, interior and exterior down to new pool build. We love what we do and it shows in our work.

"Back neighbor fence was horrible and unfortunately they were renters. We added on these vinyl fencing to our home and she did an amazing job. Very detailed and told us we should do concrete for the post so it’ll hold better. Highly recommended. Thanks Cheree for everything."

Michael H on December 2024


Avatar for OC Home Builders, Inc.

OC Home Builders, Inc.

Servicing
4.94(
103
)
Approved Pro

OC Home Builders, Inc.

Servicing
4.94(
103
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
37 local quotes requested

OC HOME BUILDERS, INC. is a FAMILY-owned business, working to achieve excellence since 2004. We service all of Orange County. Our goal is that you LOVE the End Result! Please call or TEXT for your FREE estimate (714) 330-9031. We look forward to BUILDING something Beautiful together! Jim is an EXPERT BUILDER & a MASTER at his craft! America is a skilled communicator. Assuring that clients know what to expect next & that each project is held to the highest standards. We are fully licensed, bonded and insured! Our crew is dedicated to building quality construction, including FULL HOME RENOVATIONS, ROOM ADDITIONS, ADU’S, KITCHEN REMODELS, BATHROOM REMODELS, WINDOW & DOOR REPLACEMENTS, GARAGE CONVERSIONS & MORE! We are proud recipients of the “Angi Super Service Award" since 2012, along with other prestigious awards. Meeting & exceeding client expectations for 25 years and counting! We LOVE what we do, and we hope it shows in the end results! CALL or TEXT us for a FREE ESTIMATE (714) 330-9031 Let’s build something beautiful together! CSLB# 1035464

"I will always hire Oc home builders. I have been using them for years. Great attention to detail that sets them apart from others."

maelin h on April 2025

OC HOME BUILDERS, INC. is a FAMILY-owned business, working to achieve excellence since 2004. We service all of Orange County. Our goal is that you LOVE the End Result! Please call or TEXT for your FREE estimate (714) 330-9031. We look forward to BUILDING something Beautiful together! Jim is an EXPERT BUILDER & a MASTER at his craft! America is a skilled communicator. Assuring that clients know what to expect next & that each project is held to the highest standards. We are fully licensed, bonded and insured! Our crew is dedicated to building quality construction, including FULL HOME RENOVATIONS, ROOM ADDITIONS, ADU’S, KITCHEN REMODELS, BATHROOM REMODELS, WINDOW & DOOR REPLACEMENTS, GARAGE CONVERSIONS & MORE! We are proud recipients of the “Angi Super Service Award" since 2012, along with other prestigious awards. Meeting & exceeding client expectations for 25 years and counting! We LOVE what we do, and we hope it shows in the end results! CALL or TEXT us for a FREE ESTIMATE (714) 330-9031 Let’s build something beautiful together! CSLB# 1035464

"I will always hire Oc home builders. I have been using them for years. Great attention to detail that sets them apart from others."

maelin h on April 2025

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FAQs for addition to existing structure building service projects in Lake Forest, 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 Lake Forest, 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.