recently hired Greencal Construction for a full roof carpentry and shingle replacement, and I couldn't be happier with the experience. They completed the entire project in just five days, which was impressive given the scope of work. Francisco, the salesman, was extremely patient throughout the process. He took the time to demonstrate different roofing models and options, answered all of our questions thoroughly, and consistently checked in with us to make sure we felt comfortable with our decision. Crystal was outstanding when it came to payment services and customer support. She was organized, responsive, and made the administrative side of the project smooth and stress-free. Overall, Greencal Construction is transparent, professional, and truly goes above and beyond. I'm very happy we selected them and feel confident knowing our roof is well protected. read more

I wanted to wait to write this review until my project was complete, but I think we are in a spot where I don't care about the repercussions anymore. Work we wanted done: New roof and Solar installation. 1000 sqft home with 12 panels. When we started the process: August 15th Cost: 65k Why we chose them: They are not the best priced but we felt like their service level would be better than a huge national company. We were very wrong. Also they were certified platinum through the roofing company and solar we wanted. What has gone wrong in a nutshell: We felt very forgotten and gaslit throughout this process. We were told and notified things were submitted when they weren't. They blamed the city on getting permits on time but in reality the permits were approved weeks before they came out. The process wasn't given to us on how things were going to happen and in what steps, we got different answers every time we asked about this. Then when we follow up we get told that we still have time etc etc. Even when we have people scheduled to come do the install the workers didn't show up, they didn't even know until we called, then said a delivery should have happened the day before. Again, not keeping us in the loop. I would have assumed that through all the hoops we had to jump through they would have given us more TLC, nope. Not at all. Nick Messenger said he was going to personally help me project manage this, but I haven't heard back from him after he made that comment. Not through text not through call. And every time we do talk on a call it's because whatever was happening blew over and he would assume that I'm happy now. So all in all this is just another really good sales team. I highly suggest not going with them and finding a cheaper place that might be a national company of sorts so that you have more protection and better pricing. Anywho feel free to DM me if you want proof and details. I attached some of the communication I have had with them too. read more

Reducing my rating to 1 star. After I wrote this review the issues have continued. People showing up unannounced at my door at 7.15 in the morning for inspection. I was promised a technician will come and show us how to operate the system, the scheduling for that has been a nightmare. I reached out to their Marketing Director who promised to assist, but that didn't lead to anywhere. Overall extremely poor communication and even poorer project management. The owner Hazel doesn't seem to care - initially said she will take over communication and then she was just as bad. I have made every possible effort and have voiced every possible concern, but that has all been brushed off. ----- Communication throughout this entire project has been extremely frustrating, and often nonexistent. Nick was my original Project Manager, and later Hazel, the company owner, took over. Initial meetings went well, and Nick said all the things I wanted to hear. We signed agreements in September, and I was asked multiple times to provide copies of my utility bill. By the end of October, I hadn't heard anything, so I followed up myself about permits. During the sales process, I was told permits take 6-8 weeks, but later I was told they're instant. Communication was either completely silent or contradictory. At the end of November, after chasing for updates again, I was told someone would contact me the week of Thanksgiving to schedule installation. That didn't happen. In early December, after following up again, I was suddenly told I needed a different system installed--supposedly better, but with a shorter warranty. I didn't really have a choice, so I agreed. Installation was scheduled for December 8. December 8 came and went--no one showed up, no call, nothing. I escalated, and Hazel personally assured me she would oversee the project. A new date was set for December 16, and the system was finally installed. After that, I was told Edison needed to install a meter, and that the system should be operational by mid-January. They had me sign an installation completion document and followed up aggressively to get it signed, but what they didn't explain is that they would use that to immediately collect payment from my lender - before the system was operational or had passed inspections. Throughout January, I kept following up and was told Edison was outside their control. On January 13, my father passed away, and I informed them I had to leave the country. I stressed that Edison needed access before I left since my home is gated. Hazel completely ignored my calls and messages. I contacted Nick, and instead of helping, he accused me of "creating negative scenarios" for simply asking questions and expressing frustration. He said he would coordinate with my husband while I was gone, but never even contacted him. I returned on January 31 to find no one had reached out. Edison had eventually shown up and luckily was able to access the property through my mother-in-law. I followed up again - Nick didn't respond. I called Hazel who told me there are still inspections required, with no clear timeline. Today is February 9, and I'm waiting on the first inspection on February 13. The system is still not operational, and I have no clarity on when it will be. They just continue blaming it on other parties but still don't proactively communicate to keep me informed, I have to drag it out of them. A lot of important details were never disclosed during the sales process, especially the number of third-party dependencies and delays that may occur. Despite this, they've already collected full payment from my lender. I'm now paying for a system that isn't working, with no clear timeline on when it will be and no accountability from the project team. I've also not been trained on what to do and how to use the system once it is in fact live. I would not recommend working with them. It's also awfully inappropriate to be sending Facebook friend requests to customers. read more

I would give them a 0 if I could. We had our roof replaced and work done on our roofline. Horrible job. We had fascia boards hanging down and had to ask for them to be corrected multiple times, each time being hung crooked. It was like this with many parts of the house- constantly had to ask for things to be redone. Tools and nails left everywhere in our yard. Whole roof shingles were left in our pool. Communication with upper management was horrible. I would honestly say this was a homeowner's worst nightmare. Makes me weary to trust any contractor ever again. read more

Did a shoddy job on our roof, leaving trash and nails all over our home. And now won't stop calling me and spamming me to get more projects. It's even worse because they would slightly change their number and keep calling me. I've been receiving calls at least 3 times a week since April. read more

They did a really great job on my roof! They handled everything from the permitting to making sure the inspector came before it rain. Also the initial reason I picked them is the superior material. They use something called titanium FR. I'll update my review in 10 years to let you guys know if it lasted longer than 10 years haha. I like this company also because of their good communication. Try them out! read more

See all

Final quote much higher than initial estimate. Wanted to know what other quotes were so they could match instead of providing best and final pricing from the start read more

Nick and Trevor were excellent in explaining the work required to reroof my house and the process to complete the work. The experience with them was atypical as they were respectful which unfortunately as a single woman has not been my experience with constructions projects. While I recommend their services to everyone, I would definitely say single women, seniors, Nick and Trevor will help you in a heartfelt, respectful manner. read more

UPDATE- Not changing the fact this company has no business being in business, Green Cal settled my dispute with compensation. read more

They installed our new roof in July 2923 and in January 2024, it was leaking at multiple places. Attempted to call multiple times but not returned any calls. Until Feb 2026 and it's still leaking .. I hired 3 roofers to review their work and all three said the same things of what they did wrong. Cost to repair is 1950.00 and yet they went silent for over 1.5 years Brandon read more

GreenCal has been doing a great job taking care of my fathers roofing project. The sales reps are extremely knowledgeable, very nice and not pushy at all. My father is elderly and GreenCal has truly taking their time working with him, being honest and trustworthy. Can't wait to see how our jobs come out, thanks GreenCal! read more

Fransisco did an amazing presentation after estimating what I need for my roof with solar panel removal and replacement. Great experience.

I would highly recc this company despite not giving them the job. Veryvresponsibe via text and came out within 24 hrs. Masoud came out to give me a quote. Itvwas pouring rain and he was late 15 min and was appologizing. No need to apologize. Another contractor didn't even show up or call. Masoud took his time and explained yo me tgat tge job was too small. Didn't want to charge me such a markup where other options can be used to fix the problem. I really appreciated the honesty and his proffessionalism. . I woujd definitely use him for any future roofing needs read more

Masoud, Elsa, and the team at Green Cal Construction were professional, responsive, and maintained great communication from start to finish. The crew was friendly and worked efficiently, and the overall roof looks solid and well-done. However, there were a few concerns worth mentioning. The company should provide proper portable restrooms--some workers used my backyard, which created an unpleasant situation. Additionally, a few damaged rafters noted during the project were not replaced.Still, I appreciate the team's effort and the quality of the final result. read more

They were on time, clean, and did outstanding job. I will use them for my other home and recommend them with full confidence. Thank you for great job and delivering what you promised without any problems read more

We had the Best Service with GreenCal. Customer Service is above & beyond. Thank You so Much FRED & FRANCISCO. It was a pleasure talking & working with you. You are both so easy to work with & so honest. Very much APPRECIATED. Great work! read more

GreenCal was great throughout the whole process. The patio roof came out great on my rental property....2025 This is the second time I have used them. They did our roofing, installed gutters, and fixed our balcony floor which had a huge hole in it back in 2021. My husband and I are very satisfied with GreenCals work. Thanks read more

See all

I live in a townhouse where our tile roof is taken care by the homeowners association while the flat roof portions that house the AC units of a 1979 property are the responsibilities of the homeowners. My flat roof is attached to one of my next door neighbors and they had issues with roof leak. Unfortunately, that means we should replace our half at the same time. I did not want to replace my side since it was not leaking. But I guess it would be a matter of time before I do and the cost would eventually sky-rocket. We decided on using Green Cal. It was costly indeed, as my side of flat roof was less than 300sf and my cost (including permits) was about $4000. It seems Green Cal did a good job in communicating with us and sending photos of their progress. We shall see if my neighbor's side has stopped leaking come rain season. For now, I guess I am glad it is 1 thing crossed off the list. read more

GreenCal Construction - Photo provided by Green Cal while in progress of tearing old portion of flat roof. - Roofing Near Me - Bellflower, California

See all

I had a confirm scheduled for roof inspection but don't know anyone came or not. There was no quote afterward. Can't believe it. ST read more

Work was done within a good timeline and within a reasonable cost. Their customer service is outstanding! Between Crystal and Megan I felt like my voice was heard in the project and I was constantly kept in the loop of the progress. read more

The quality of the work provided was excellent , the customer service and communication with the staff was very good , I highly recommend this company read more

GreenCal replaced my roof. They were competitively priced and Masoud provided a detailed explanation with no high pressure tactics of what they would provide. The crew was punctual, and cleaned up daily (multiple times) to ensure kiddo and pets would be safe. Front office was accessible and responded promptly to any questions/concerns. Roof looks great and I am a very pleased customer! read more

Great! They are great.!!!! We're great at communication and also with the staying within my budget. I recommend Masoud He is one of the kind! You can call him at 4242343236.. read more

I had a very positive experience with GreenCal Construction starting with Francisco who came to give me a bid. He was professional, knowledgeable and personable. I had several bids but decided to go with GreenCal Construction for my roof replacement. It was a challenging roof and I had 34 solar panels that had to be removed and then replaced. I had termite damage over a large portion of the roof. Luckily it was old damage but carpentry had to be done. Hazel, Crystal and Francisco kept me updated every step of the way. I had a large dome skylight that Ernesto evaluated. The work was done smoothly and in a timely manner. I think even ahead of schedule. It looks beautiful and I am thrilled with the results. This is a wonderful company and I will use them in the future for any construction projects I may need. I'm so glad I found them. read more

Masoud came over and explained all my options for a reroof and gave me the best quote after getting 7 other quotes. He went over the process, the warranty and how long it would take. They came on a Monday to remove my existing solar panels and Tuesday with a trailer and removed all the shingles from the roof. We were hopeful that the wood was in good condition but the planks were too far gone to reuse so we had to replace it all with plywood. It was a fear that Masoud had prepared me for, so I wasn't surprised and it was necessary. The removal took a couple of days and we had to wait for inspection. The following day they came and started the install. Most of the install was pretty quick and only took a couple of days. The thing that took the longest was the re-install of my solar panels. They had to wait for a part to come in for my particular panel. Once that was ordered they installed it within a day. After a couple of hours I was noticing that my solar system was not producing as it should. I reached out to Elsa and Crystal who both were quick to respond and send out someone to get them running. It was just a panel that wasn't plugged in all the way. That was remedied and I'm happy to report that it's back on track. I really appreciate their customer service and although there were issues, they were quick to help me any way they could. I now have a gorgeous roof that I don't have to worry about for years to come. Thank you! read more

See all

We worked with John Serrano, our project manager. He was always available for my husbands phone calls and met with my husband on the job site to make sure we were happy with the job. They did excellent work and the new roof should outlast our home ownership. We did not know that there were actually 2 roofs on the home, so we had to pay extra to have the first roof taken off and hauled away which was in excess of the original estimate. But this was all explained to us and the costs involved. We also had some bad boards that were replaced to our satisfaction. At the end we had forgotten to ask for the permit and it was sent to us right away. read more

GreenCal Construction - Lakewood roof, small house and detached garage - Roofing Near Me - Bellflower, California

I would highly recommend GreenCal. the workmanship and professionalism was fantastic from start to finish. Thank you Ali for working closely with us to get the job done in a timely manner, even while dealing with budgetary issues and some cost overruns due to termite damage. read more

GreenCal Construction - Roofing Near Me - Bellflower, California

Had a great experience work with the team from GreenCal Construction. My roofing project was completed in under a week & the workers did not leave a mess after completing the project. They had a tarp to keep things from getting dirty & after each day they made sure my home was neat & tidy. Prior to the project I met with Mike who was very informative on how things will be operated. Elsa & Crystal kept me in the loop of things & had great communication with me throughout the process. I also had a nice experience working with Ernesto. All in all I would highly recommend GreenCal Construction for any roofing that you need done. Everyone that I worked with was professional & helpful. I already have neighbors who have met with Mike & have received comments on how nice the roof looks. read more

I hired GreenCal Construction to put a new roof on my house. Salesperson, John was thorough in explaining the project and understanding an extension that I wanted to add as well. I felt the project cost was good in comparison to other roof companies I had quotes from. The project initially estimated to take a few days, but it ended up stretching into more than several weeks due to a upgraded portion of the plan being left out of the original HOA and city permit application process, and engineer approvals. This was frustrating, which resulted in me reaching out to the owner, Hazel. She came out to my house and once she realized the delays, things began to run a little quicker and she personally stepped in to make things right. Throughout the roofing project, Ernesto was fabulous and provided great customer service!! In the end, after 10 weeks, the roof looks great, and I do appreciate the effort that Hazel made to correct the issues. While the process was bumpier than expected, the company did take responsibility and that makes a difference! read more

Thank you, GreenCal Construction. Y'all did an amazing job. The two guys who came and worked on cleaning my roof were very professional and helpful. My roof had green stain/green algae that needed to be pressured clean. I was a bit worried that the green algae and dirt wouldn't come off, but as you can see, they were completely gone after the work was completed. Also, I quoted around with other roofing companies and they were charging a lot more than GreenCal. I'm glad there are still honest folks and Companies out there who's not out there to take advantage of people by overpricing/over-charging their clients. I will recommend and use GreenCal in the future. Thank you again, GreenCal. read more

GreenCal Construction - Before - Roofing Near Me - Bellflower, California

See all

As a solar installer, partnering with the correct roofing company is really important. Making sure my customer has the best roof possible, for the most affordable price... And backed up by the best warranty? It's more than important. It's vital to any successful installation. That's why I partner with GreenCal Construction for all of my homeowners Roofing needs. They provide the best equipment, best warranties and best pricing. Their customer service is white glove, and Megan Lee always goes above and beyond. I can't recommend GreenCal Construction highly enough!! Update: i referred GreenCal to my mother in laws house, and she said the crew was great! Installation was fast and clean up happened with a breeze. Going to refer them to all my friends and family! read more

GreenCal Construction - Fresh roof from GreenCal for my solar customer - Roofing Near Me - Bellflower, California

We needed a part of our roof replaced. GreeenCal was quick to respond and offered competitive pricing. The real gem of this company though is Crystal. She was very dedicated to providing me the best, quickest, and most professional service. She not only could explain the process but was also very knowledgable about the roof repair, and the materials and potential difficulties. She was very quick to respond to my inquiries and always kept me apprised of any developments or changes. If I could give five stars just for Crystal I would! read more

One star is putting it way too nicely. Green Cal was hired for a roof and solar panel install with a battery wall. The process has been awful, and communication has been horrendous. It was like dealing with a company that has never installed before. They were uneducated on the process of dealing with Edison, lazy, and intentionally delayed our project due to incompetence numerous times. They lied several times, and would simply say "we are sorry, we have a lot of new employees" but did not solve the issue, and would lie again to cover up the first lie. DO NOT USE THIS COMPANY they will take your money, and never finish the job. read more

Abraham was very thorough and went over my roofing project in great detail. He was the only contractor to go up in the attic to check out for water damage. He went over the company's contractor's license and insurance coverage. He also went over various scenarios and their impact so there would not be any surprises. read more

I had a great experience working with Masoud from Green Cal roofing. It was very easy to talk to about my roofing project and took the time to answer all my questions thoroughly when I asked to change the placement of the trash bin for the tear off, he was accommodating without hesitation. Later, when I needed to adjust the scope of work slightly, Masoud was equally helpful and supportive throughout the process he was pleasant to do business with and made everything feel straightforward and stress free. I truly appreciate it his professionalism and flexibility and I recommend working with him to anyone considering a roofing project read more

If I could give GreenCal 10 stars I would. From start to finish GreenCal was amazing. We had a complete nightmare on our roof after another company installed solar panels and a CoolPV/Fafco system that was suppose to heat the pool (btw, if anyone tries to sell you on that system, run screaming). From day one, the CoolPV panels leaked chemical filled water on our roof. The previous solar company would not fix the problem and abandoned their warranty. In the meantime, not only did we have leaking panels, our 15-year-old roof was being destroyed by the chemical water leaking onto it. So this was going to be a complicated fix because not only did we need the solar panels and CoolPV plumbing ripped out, we also needed to replace the roof. I tried over a dozen solar companies and no one would touch that F*@ked up system. After almost a year of searching, I came across GreenCal who immediately responded and said they could do both. From the moment project consultant Des came to look over the situation to give us an estimate (a very fair price) everything moved very efficiently. Nick, the solar specialist came out with his, team, evaluated the situation, made a game plan and we were off and running with project manager Juan overseeing everything. The solar was disassembled day one, the roof came off day two, day three the city inspector inspected the wood, day four the new roofing supplies were delivered, day five the roof went back on, day six the inspector came back, and found a very minor problem that he wanted addressed, day seven the guys were back on the roof making the adjustment, day eight the roof passed final inspection, day nine the solar panels went back up. Efficient and flawless. One extraordinary note I would like to make: In between the time that the roof was off and while waiting for the inspector, Juan called me at 7P to tell me he'd been watching NOAH and feared that there may be some rain. Could he please send someone to cover the roof. By 7:30 a guy arrived alone, worked in the dark and covered the entire roof in plastic to ensure no damage to the wood. Unbelievably amazing! I've had several contractors do work on my house and each previous to GreenCal was a bit of a nightmare in one way or another (we all have our stories), but GreenCal and the entire team already listed, plus Crystal and Elsa who texted every day with updates, made this such a pleasant experience. I will be using them for any work done in the future. Thank you so much GreenCal! read more

See all

These folks installed a new roof, replaced my damaged fascia, and put in new gutters. A great experience from first estimate to final cleanup. Excellent communication, reasonable prices, and high quality work. I'll definitely be using them again in the future for repairs and painting! (Special shout-out to Ali, Juan, and the unbelievably hard working crew. ) read more

I'm very happy with the new roof. GreenCal was very efficient in the installation. My lot around the house was kept clean of all waste. A couple of small changes the city inspector requested were handled in a timely manner. I appreciate the quality of the roofing materials. read more

Megan Lee, John Serrano and the whole team with GreenCal Construction, Inc. gave us exceptional service and value providing roofing and rain gutters for our home improvement project.  This included installing both Spanish tile roofing for our new gazebo and applying a 3 ply JM APPEX modified bitumen roofing system for our new low pitch patio roof.  All interactions with GreenCal Construction were wonderful, the workmanship was great, and the work happened quickly.  I would highly recommend anyone interested in having roofing work or rain gutters installed contact GreenCal Construction for an estimate.  I believe you will have a very good experience.   Update: We loved working with GreenCal so much that we also decided to have them give us a bid to replace our dual pane kitchen window that developed some moisture inside the panes. The bid was great and we are excited to get the work done. We are so happy to have found a company that we can wholeheartedly recommend for all roofing, gutter and exterior work you might need. read more

GreenCal Construction - Tile roof and patio roof installed by GreenCal Construction. Check out the gutters too!! - Roofing Near Me - Bellflower, California

Thank you GreenCal for replacing our roof. We are happy with the quote, the installation team, and the back office team. Communications were clear of what the process entails from start to finish. After the removal of the old roof, pictures were taken of what wood needed to be replaced. Once the city inspected it, the installation worked hard to get the job done and cleaned around the perimeter of the house. You should only get a roof once and glad I went with GreenCal. read more

GreenCal Construction - New vents installed. - Roofing Near Me - Bellflower, California

See all