TLDR: avoid at all costs this unprofessional and dishonest company. UPDATE after the response. Most of the Ditson's response makes no sense to me but he suggests that I have CLSB involved. Of course, I complained to CLSB and they are investigating him. But it turns out his license is already SUSPENDED due to a different lawsuit. So if you ever consider this company, most likely they won't even have a CA license. This company started my solar+roofing project without a realizable plan, didn't follow their plan and after various attempts to sell me on very expensive panel relocation abandoned the project. I had to spend an enormous amount of time dealing with issues they caused, pay a lot of extra to fix their problems and finish the project with another company. The complete story is over a year long with a lot of egregious stuff but here are the main points. I hired them back in 2023 to replace my flat roof and install solar + battery. I went with them because few companies do these all together at a competitive price. In reality Ditson just subcontracted the business to two other companies (Sonny roofing and Golden Gate solar, neither of which is well-rated). After getting started on a roof they told me that they need $5K+ extra because the roof does not have the plywood, immediately making the total price higher than competition (I had no choice but to accept). The roof was installed poorly. It leaked twice that year causing damage to the ceiling these guys never repaired. Then the solar panels were installed but with poor placement due to shade and electrical work done as if there is no battery to be added. At this point they realized that their plan for adding the battery cannot be realized due to insufficient space in the electrical panel. Ditson then tried to sell me on either an extra subpanel or panel relocation options which were all much worse than the original plan and required a lot more money. I even offered Ditson the option of going back to a panel only system without a battery (for which I had a quote from them). But Ditson just declined and basically abandoned my project despite receiving about 80% of the money. With some effort and threatening legal action I got the other owner (Hippolito) to properly seal the panel mounts and partially fix their racks). After that I consulted a couple of companies about completing the work. All of them were amazed at how bad and unprofessional the work was. If you are curious let me know and I'll send you an official report about it. I had to pay over $4k just to fix the install of the panels. There was a fairly easy solution to my system which required a Tesla battery instead of the Franklin in the original plan. But in the end it was such a relief working again with some real professionals and not a flaky and dishonest Ditson. Really hoping no one else will have to deal with this company. read more

Highly recommend GreenTech Developers for solar installation. We just had our 4kW system installed on our roof in San Francisco and the process couldn't have been better. From the beginning, Ditson was responsive and helpful. I had lots of questions and requests for follow up calls and meetings. Ditson was always available and willing to help. He offered various solar and inverter options (which I appreciated) and provided expert guidance on system size and design. He answered my dozens of endless questions with grace. I really appreciated his willingness to help. As this was a big investment for me, I made sure to interview 15 solar contractors during the process. Many of them were not servicing San Francisco, didn't work on buildings with more than 2 stories or couldn't offer a solution to a flat roof configuration. I selected GreenTech as they had no issues with any of these building characteristics. We worked with a short timeline as NEM 2.0 was expiring within a month, so it was critical to draw up site plans and pull a permit from the city before the deadline. Many contractors couldn't commit to meeting the deadline. Some simply stated on their website that they are not entertaining any new clients. Ditson, on the other hand, gave me the thumbs up and got me into the NEM 2.0 program within a few days. The turnaround from GreenTech was impressive. In addition, the electrical in our old home was a conundrum. Not many contractors were able to find a solution to this challenging problem, but Pedro was a fantastic electrical wizard that saved the day. The city inspection went well and we passed! Jose (project manager) and Cesar were professional, responsive and a joy to work with. With 50+ projects they were installing at the same time, they treated my project like it was the only solar project they were working on. I always received immediate texts or phone calls back. I'm very happy with the solar install and look forward to going GREEN! The day has come where I can finally kick PG&E to the curb. Time to pop the champagne! read more

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Highly recommend Ditson and his team. I contracted with them to remove my existing solar panels and re-install them after installation of a new roof. Ditson was always super responsive via text and his prices were more than fair. He was very flexible with last minute scheduling delays due to other work backing up. His team came in, did the work quickly and efficiently and returned on a weekend to finish the job after the roofing work was completed. Really appreciated Ditson and his team. Thanks! read more

Haven't mad a decision yet, but these guys are super helpful, professional and knowledgeable. Stay tuned

Quick and easy. Very professional. Was able to work around our re-roof. Definitely would work with again.

We used Ditsen and GreenTech Dev for our 26 panel solar installation and were pleased with their work. They were quick to schedule and installation went smoothly. They even assisted in dealing with PG&E setup. Overall, very satisfied and have used them since for deck/roofing issues. read more

Wanted to also show the kind of work this team does, leaving big holes. There is zero accountability and quality assurance with Ditson and his team read more

GreenTech Developers - Roofing Near Me

Ditson and his crew were awesome from Day One! Excellent and prompt communication, extensive knowledge of all things solar/PG & E, and especially good at explaining everything to someone like me who didn't know much about this. Ditson is also very kind and professional- I highly recommend Greentech! read more

Unreliable. They didn't show up to two different appointment times. When they finally did show up, I kept having to remind them to send me a quote. Still haven't received one. We will not be going forward with this business. read more

I had my solar system install 6 years ago. And just found out we had some problem with one of the electrical pannel. And I text Diston and jos'e with his crew. And they show up next day to check and replace the pannel with no cost to me. I just want said is been 6 years already and they still keep the warranty for my solar system. It take almost 2 month to do the replacement. But it was at holiday season. I had no complain. And this is my experience to work with them. read more

This is for solar installation at the height of rush before NEM3. Ditson and his crew offered extremely reasonable pricing and service. Things were dicey at first with the rush to meet the NEM2 deadline but Ditson ensured we pulled it off. While admittedly I felt like I had to be proactive to stay on top of scheduling my project (after having secured NEM2 status), Ditson never failed to pick up the phone or get back to me immediately to answer my questions. After the job was finished and we were up and running, they came back upon request and without complaint to reposition piping for better aesthetics. I also appreciate that Ditson did not pass on unanticipated supply chain problem on to us. All promises kept. I'm happy. read more

I want to start off by saying this, VLAD is the guy who we have been contacting and I have never met someone who is so unreliable. We have been emailing back and forth with Vlad and it was like pulling teeth. He would not respond to questions we asked and when we had him come by to estimate the cost, we were excited for him to begin. He told us he would tell us the date of when he would start but we never heard back. We tried texting and emailing and nothing. We have been emailing back and forth since January. I feel like Vlad and his team wasted 4 months of my time and I could have had the wall fixed by now. My advice is...do not use them. They will initially respond and then they fall off the face of the earth. read more

Hire GTRS with confidence. The project manager throughly explained what the condition of my roof was, and supported the explanation with drone pictures, so it was easy to understand.every step of the project was smooth and streamlined. Got my roof replaced in less than a week and extremely satisfied with the results. GreenTech Team is professional, punctual and provides excellent customer service throughout the process. I would recommend this company to my friends and family in the future. read more

I highly recommend GTR&S. We moved into our house 2 years ago and it has two roofs that are 20 year old. The slopes roof is still in good condition, but the flat roof was not in the good shape, we had a small leak start in our living room. The project manager came within a day to inspect the problem, whereas all other roofing companies we contacted weren't able to come within a week. Vlad and his professional crew replaced our flat roof within a week at a very reasonable cost. It was easy to communicate with them, and Vlad was available and discussed the process throughout the repair. They also recognized a few problems in our roof and fix them for free of charge. Finally, we were aware that we needed to redo the exterior painting and they were able to fix that as well. Super helpful! read more

We just replaced our 20+ year old roof with GreenTech Roofing. Denis and his crew were a pleasure to deal with. We have had leaks which have destroyed our family room ceiling twice. Each time another roofer attempted to fix it but didn't get to the root of the problem. Denis water tested the roof when he was finished, and guarantees his work for ten years. Our leak worries are over. They also re-insulated our house while they had access, installed an attic fan, and will return to pop in a new shower skylight. They used Plastic Sheeting to protect decks, outdoor furniture, and plants, and were diligent about picking up the little bits of roofing paper that blew further afield into the garden. Denis has a references list and he did share with me. When I spoke with a couple of references they spoke highly of the GreenTech. I'm very happy with their work. If you looking for a good roofing company you definitely have to contact them. You can't go wrong with GreenTech Roofing. read more

Nick and his team are AWESOME! They took on our kitchen (wall removal/beam placement) and bathroom remodel with a removal of a chimney and some utilities switch outs. We will definitely work with them again when we'll be ready to install a new solar system. I work from home and they were very courteous and considerate to this fact. They kept the site as clean as possible considering the extent of the work. The results are awesome. We always felt like they had our interest and budget in mind when anything unexpected came up. They did great quality work and finished in the amount of time they quoted. When deciding on a company I had 4 bids and Nick was the person who was easiest to talk to and was very honest about timing (contractors are very busy right now). We definitely recommend GreenTech! read more

Ditson was great to work with. He was very patient and knowledgeable in answering all my many solar questions, and explained why certain components worked better than others to maximize output efficiency. His goal was to make sure I understood everything before deciding on which solar type to go with, even taking his time during the evening to explain things over the phone. He was able to help guide us successfully through the NEM 2.0 application process on very tight deadlines, providing updates along the way to ensure me we were on track. Next step will be the install! read more

First I want to say thank you to Vlad and his team for the quick turn around and replaced my flat roof at a reasonable price during the raining season. I have contacted several other roofing companies before signing the contract with Greentech. Vlad is the guy I get in touch with, and he showed up the same day for this onsite estimation after we went through the phone call. He is approachable for most of the time but may get into some delay in response depending on if he is super busy that day but still he is very professional and patient. Overall, the quality of the work is solid and the price is very competitive in bay area, and I do recommend them! read more

GreenTech just finished a 22-panel solar installation in my house. The whole process was seamless. I started my solar process by contacting multiple solar vendors in the area. I was referred to Denis by one of my friends. He was very prompt, honest and helped answer all my questions and concerns. The quotes from GT were better than all the other vendor quotes. My other requirement was to also get storage battery installed at the same time as PV installation. Denis  understood my requirements and he was able to coordinate everything.  The whole process of getting both PV and thermal pool installed took around 1 month. GreenTech took care of all the approvals and paperwork throughout. The actual installation was fairly quick. It took 2-3 days to put the panels on the roof. The guys also installed an EV charger for me. Even after the installation, Denis and Vlad were both available to answer any follow-up questions. There was a problem with one of the panels they immediately sent someone from their company to fix the problem. I only noticed the problem on my app after the fact. This drive to provide support all through is a testament to GreenTech commitment to their customers. I am one happy customer, and would recommend them (and especially Denis!) to anyone who wants to go green.  5-stars all the way! read more

evaluated three solar companies and decided on GreenTech due to their price and the quick responses from their team. They were able to push up my installation by a week but then it wound up raining on installation day. The installation was supposed to take two days, The team showed up the next day with a big crew and got the project done in one day they did new roof replacement, solar panels all in one day This is a great company to work with and they really know what they're doing. What I really, really enjoyed, was the fact that they send a sales person to my house to explain my future project. They send me the quote on the next day and once I was happy with the price, then Ditson great attitude and personality came out to me did a site survey to make sure what I was telling them was correct. read more

I chose GreenTech for my home solar panel project. I evaluated three companies and decided on GreenTech due to their price and the quick responses from their team. They were able to push up my installation by a week but then it wound up raining on installation day. The installation was supposed to take two days, The team showed up the next day with a big crew and got the project done in one day! This is a great company to work with and they really know what they're doing. What I really, really enjoyed, was the fact that they send a sales person to my house to explain my future project. They send me the quote on the next day and once I was happy with the price, then Ditson came out to do a site survey to make sure what I was telling them was correct. I'm very picky about how things are installed in and around my house. The work GreenTech did far exceeded my standards. My new solar system looks great and everything is installed perfectly. Highly recommend! read more

I really want to share my fantastic experience with Green Tech Developers. I needed a repair on my roof, getting ready for the rain season that starts now in December. The roof contractor did a great job in doing the estimate of the service. They are extremely professional . Their customer service is the best in the industry. PS: I have been burnt in the past by other companies. The project and installation took only one day, when other companies would take about 2 to 3 days. I am extremely happy with them and for sure I am going to reach them next time i need their services. read more

GreenTech recently installed a new roof and solar system on our small condominium complex, and we could not have asked for better service. It took about a week to install the new roof, and the workmen were consistently on time and cleared out the roofing debris at the end of each day. Nickolas was our project manager, and his approach to the job was nothing less than professional. He was always available to answer questions, and he checked in with us every day to make sure we were aware of what was going on. Through our dealings with GreenTech, I found that this project didn't painful like I thought before. I'll definitely recommend this company for our future projects. read more

They offer everything from Solar installation ,Solar panels, solar system, solar companies, roofing, roofing contractor, roof installation, roofing services, new roof, roof repair, roofing repair, roof replacement.... you name it! Best customer service as well. Can't wait til I need their services again :) read more

Thank you Vlad and his team for excellent customer service and job well done. Our roof started leaking during heavy rains this year. We were in hurry to fix the problem. Green tech inspected the roof gave us honest estimate and competitive price. They fixed our problems quickly. The crew wAs knowledgeable, timely and very clean. We highly recommend this company. read more

GreenTech is top notch. Denis was extremely knowledgeable and discussed options openly and honestly with me. Our experience with GreenTech was superb. From diagnosing the problem using drone imaging and direct inspection, to evaluating our options, to completing the work on time and budget, the experience was top notch. Their workers were prompt, courteous, and completed their work on time and with a high degree of professionalism. For example, they removed the old tar and gravel roof in about 4 hours! They were kind to our neighbors, and addressed their concerns promptly and professionally and ensured that the property was free of debris. Denis and his team were always available to discuss the project as the work progressed, so communication was fantastic. Truly one of the best contractors I have ever worked with (and there have been many over the years). If you want superb workmanship and the latest green roofing technology, GreenTech is your best bet. We have been fully satisfied with the work, and they are terrific to interact with. I would not use anyone else. read more

We just had our system installed and we can't be more happy with the experience we had with GTRS. Their estimation process was most thorough and personable. One we decided to move forward with them, the entire process was stress free. GreenTech's project manager handled all the scheduling, logistics and paperwork. Installation went without a hitch and honestly believe the panels make my house look better. Thanks GTRS for the great work ! I can recommend this company read more

In the process of selling our house we discovered that we needed to replace our roof. After contacting a couple of companies, we decided to go with GreenTech Roofing&Solar. The owner was top notch honest and they finished the job very fast. Later we hired them to evaluate the roof on the house we were about to buy. Great service, you won't go wrong with GreenTech Roofing&Solar! read more

I found this guy in my area and had him take a look at my roof that was leaking at a crucial time I needed done and he was quick to respond and got it done. Made my day I definitely would recommend him. read more

I could not be happier with my new solar installation done by GreenTech. It was about as easy as it could be. Nick took care of everything from planning, permits, installation and work with another roofing company. He was very glad to answering my questions and making sure I understood how net credit works. The final packet I got was very detailed and will be nice to have. Now excuse me while I run out side and watch my meter spin backwards. I very happy with my new solar system read more

We have a 2,600 square foot roof and contracted with Green Tech Developers to replace our tar and gravel roof. Proposals were solicited from seven different contractors and each furnished recommendations regarding what needed to be done. The proposals covered a broad spectrum to include recoating the surface, replacing the roof with a bitueman ply, or replacing the roof with PVC or TPO. Although there was a good warranty associated with PVC and TPO and both were a high quality product, they were both more expensive than other companies using bitueman. We selected Green Tech because of the materials to be used, i.e. bitueman (3 ply asphalt converge with a silicon top coat). They were not the most expensive nor the cheapest bid, but were right in the middle. The sales rep was Vlad who quickly and thoroughly responded to our texts and emails. Vlad was also at our house when the project started. There was a 3 person crew who installed our roof and they thoroughly cleaned our property at the end of each day. In addition, Eduardo, who was in charge of the crew was always accessible to answer questions, explain what work was being done, and address any concerns. We were satisfied with the work performed and would highly recommend Green Tech for your roofing work due to their excellent customer service, reasonable pricing, and quality workmanship. read more

Great job by a great team. It was a challenge to find a company who can help me within a couple of weeks. I have a standing seam metal roof and was looking for a contractor familiar with this type of installation. Even though it should be a much easier and less labor-intensive installation than an asphalt shingle roof, other contractors had actually had higher than normal bids since they weren't knowledgeable about and geared up for this type of installation. Thankfully GreenTech was and I got a superlative system at a great price. Excellent meticulous and considerate installation by Nick and crew. Feel lucky to have found them. If you looking to get hired by the professional solar installer, this company is the best choice. I'll recommend them to my friends and colleagues! read more

Great experience with Greentech, thanks Ditson and his team. This company was very professional, with excellent communications throughout the project. The team arrived, tear off existing roof to the wood and replaced the roof in one day. They were very careful with neighbors and clean up all debris upon the completion of the job. I would highly recommend them read more

Our house was in need of a new roof bad there were parts that were completely unsafe and we were really interested in a quote for solar installation as our electric bills especially in the summer have been through the roof. Green Tech Roofers got the job done for us. They were friendly, efficient and had great prices. We had a new roof installed and solar panels put on. We are very happy with how the whole procces went! Thanks guys! read more

Me and my wife were getting quotes from various roofing, solar installation companies. We had searched everything online Solar installation ,Solar panels, new roof, roof repair, roofing repair, roof replacement. It wasn't until we found Green Tech that we were pleasantly surprised by there prompt arrival to quote us on our roofing, solar panel job we needed. Solar panels can help you save so much $$$. It is an initial investment, but well worth it in the long run. read more

If I could give zero star on Yelp, I will give it to this company. Juan Cabrera is a roofer working for the company. He came to see my roofing repair job. He said he could beat any other contractors' bid by 20%. So I sent him another contractor's bid, then he just refused to honor his word. Totally unethical and deceitful marketing tricks. I do not know if all employees are like this in the company, but Juan Cabrera is definitely a roofer that you should avoid. If you can not deliver, do not promise, it is a waste of time for both your customers and your business. read more

We had a wonderful experience working with GreenTech. Absolutely the best experience, exceptional service, responsiveness, professionalism, follow-through and installation. We worked with Nickolas and could not have felt more confident in the company, their work, experience, reputation, warranty and product install/delivery. They were higher than our 2nd solar quote, but the warranty was far superior. After the 20-minute thorough consult, Nick provided us a detail information about our future savings. Once we determined they were our solar company, we schedule our install dates and inspection with ease. Everything went smoothly as planned, the installers were prompt, clean and efficient and GreenTech spent the time to wait for our city planner for 2-3 hours to complete the permit approval process. The final walk-through with Nick was detailed, answered all of our wraps up questions. In all, GreenTech was an exceptional experience, we were very happy with their work and will recommend them to our friends, family and colleagues. read more

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I recently just purchased my first home and wanted to get solar panels installed. But was not very knowledgeable. I shopped around getting quoted many different prices but none that I felt comfortable with. So I came across green tech and felt so comforted by not only the professionalism but all the knowlage I needed to know about what would be best for my home. Not to mention I was quoted a great price! Everything was extremely professional and done in a timely fashion. I highly recommend this company. read more

Our roof was leaking and Vlad came by to take a look. He took the time to fully inspect the entire roof, provided a very fair assessment of the condition. He explained what needs to be done and he told us exactly what materials they will use.The job started with in one week after when they sent me the estimate. They replaced the roof with in 3 days.I HIGHLY recommend GreeTech. They are not the cheapest guys but I feel that prices are fair. Considering awesome quality of their job you are getting a good deal! This 5 star rating is fully justified. Keep up the good job! read more

Just finished my install with GreenTech, worked with Ditson. everithing went smoothly and promptly. They quickly responded to qustions and ensureda prestine installation. The project maneger helped keep me informed and made sure I knew was required, after he provided pictures before and after. I can recomended this company. read more