I'm so glad we found Diamond Construction. After a long search for a trustworthy general contractor and being extremely selective about who we work with, finding Justo truly felt like hitting the jackpot. From our very first inquiry, Justo has been incredibly responsive and reliable. He's clearly a busy man, but he makes the time and actually shows up. If you've dealt with contractors before, you know how rare that is. He follows through and does exactly what he says he's going to do. He stands confidently behind his work, which immediately gave us peace of mind. I'm very particular. It's simply in my nature. I ask detailed questions, I research everything, and I pay attention to the smallest things. Justo has been nothing but accommodating every step of the way. He answered every question thoroughly, never rushed the process, and never made us feel like we were asking too much. His knowledge and professionalism genuinely stood out, and you can tell he takes pride in delivering quality work. We initially reached out because we had a leak in our garage and needed our roof repaired and had contacted several other companies. What really set Justo apart was the balance. His pricing is fair and reasonable, yet you can clearly see the confidence he has in his craftsmanship. There's no pressure or gimmicks, just honesty and solid work. One quick tip: the phone number listed on Yelp is a Yelp-generated number. If you want to connect quickly, use the "Request Consultation" option on Yelp or visit their website for their direct contact information. Give Justo a chance to earn your business. We genuinely feel lucky to have found him, and we won't be going anywhere else. Thank you Justo and team! :) read more

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I recently (10/2025) hired Diamonds General Construction Co. to replace the carpet in my bedrooms, and I couldn't be happier with the results! I had the pleasure of working with Mr. Justo, who was incredibly helpful throughout the entire process, from answering all my questions and scheduling my free estimate to making sure everything was completed smoothly. Their communication was prompt and professional, and their estimate was the best value I found compared to other companies in the Antelope Valley. It was truly a pleasure working with them, and I look forward to hiring them again for future home projects. Highly recommend! Recientemente (octubre de 2025) contraté a Diamonds General Construction Co. para reemplazar la alfombra de mis habitaciones, ¡y estoy encantada con los resultados! Tuve el placer de trabajar con el Sr. Justo, quien me ayudó muchísimo durante todo el proceso, desde responder a todas mis preguntas y programar mi presupuesto gratuito hasta asegurarse de que todo se completara sin problemas. Su comunicación fue rápida y profesional, y su presupuesto fue el presupuesto de mejor valor que encontre en comparación con otros contractors en el Antelope Valley. Fue un verdadero placer trabajar con ellos y espero volver a contratarlos para mis futuros proyectos. ¡Se Los recomiendo! read more

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We had a leak in our ceiling that's been giving us trouble for awhile and we've been having trouble trying to get a roofing company to come out and take a look at it. Justo answered and came out assess the damage right away. He came back to us with what we felt was a very fair quote the same day, and he completed the repair the next day. He was very prompt and professional and let us know to give him a call right away if there were any issues with the repair. We appreciate him prioritizing our business and helping us out so quickly. We definitely plan to use him for other projects and repairs in the future. read more

Justo is the man, great price and a great person. Very reliable. Will call on for all my home services read more

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Roofing repair, Justo's work was excellent very professional, work was done one day, clean. I added some pictures before and after. I don't normally give recommendations but I'm sure glad he was available will be using his service again if needed. Pricing was reasonable. Thank You Justo. read more

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Justo was very honest and kept it real and professional. He gave us a great quote and repaired our roof doing a phenomenal job. Definitely would recommend him to other people. read more

I was in need of a roof repair after a leak. Justo gave me a fair price. He was quick to come and make the repair. In addition, he was very communicative about what the repair would entail and answered all my questions. Thank you, Justo! read more

Where to start with this review.. other than saying how grateful my husband and I are to have come across Justo & have hired him to do work in our home. For a whole month my husband and I were going through hell with a "handyman" we hired to do recessed lighting & installing ceiling fans throughout our home, he screwed up with the electrical wiring, made many unnecessary holes throughout, and never showed up when he said he would or would work 2-3 hours and be gone.. until we decided it was enough & we had to find someone else who was professional, reliable & affordable. And thankfully we found Justo, he was GOD sent! He corrected the wrongs from the previous guy, and he even finished the job sooner than he estimated! He showed up on time & was very professional. He was very efficient with his time. We loved how he worked that we even added work to the project. Justo completed the work to make our home look beautiful again! Would definitely hire him again! Thank you Justo! read more

I needed to replace our nasty carpet laundry room flooring that the previous homeowner left me with. I couldn't even stand opening the laundry room door because of the stinky and dirty carpet. I found Justo from yelp and he was very nice over the phone. It was an urgent matter. Great thing he was available that same day and came back in the afternoon to get the work done. He even replaced our bathroom flooring with the right waterproof vinyl plank to prevent further damage if there will ever be a leak in the future. I recommend Justo for your next home repair needs. read more

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This review is way over due. back in 2019 we hired Justo to expand one of our rooms and turn it in to a studio apartment. There's several pictures here that show part of that process. This was a really big project that was going to cost thousands of dollars. It's very difficult to hire and trust someone without ever working with them in the past. Hiring Justo was truly a blessing for me and my family. He told us the job was going to take a month to complete and the results ware spectacular. Again, he built an entire studio apartment with a kitchen, plumbing, lighting/electrical, windows, roof, door and walls. Justo also did concrete work in our back yard and several other jobs to improve our home. My family and I couldn't be much happier. read more

Would definitely recommend Justo for any house projects. He did a few different projects on my home and top quality work. Gets the job done fast and very professional. I wanted to install a ceiling mounted exhaust vent hood that he ran the duct work and did the exterior stucco. I wanted a more open concept between my kitchen and dining room and he was able to open the space up. I also had some plumbing and shower work that he did in my master bath that came out great. read more

Diamond General Construction Co. - My tiling work after justo did the shower pan. - General Contractors Near Me - Lancaster, California

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These guys are top notch, we are beyond happy with the work they have done for us. We had our bathroom remodeled and we were so happy we had them come back to paint our house and replace 4 old windows. Finishes right on schedule, personally that is huge with a contractor to finish on time and checks in when steps of construction are about to finish. These two things makes the job go faster without mistakes. Very happy read more

Following some water damage, we had to repair a hole in the drywall of our living room's ceiling. Diamond construction did it quickly and very well. After the work was completed, it was impossible to guess that there was ever any hole or damage on the ceiling. They did a very nice job indeed. read more

Our bathroom shower/tub remodels (two different bathrooms). Justo the contractor was amazing! So pleasant to work with, nice, honest, trustworthy, and easy to work with. He did an amazing job on tiling and plumbing work. He made it so easy and would hire him again in a heartbeat to do more work. He has amazing attention to detail, and communicates very well about the work being done. I've heard horror stories about contractors in the area, and am happy to say Justo is not one of them. Thank you Justo! We love our shower and tub now! read more

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We remodeled our bathroom shower. Justo was such a pleasure to work with. He came in on time and budget and delivered exactly what we asked for. Great job and great person!! We highly recommend him and his work! read more

I have used Justo for minor and major repairs of my Antelope Valley rental properties for many years. Work has included Electrical, Plumbing, HVAC trouble shooting and repair, Flooring, Bathroom, Kitchen counters, Garage Doors and general handyman work. Justo is honest, timely, trustworthy and efficient. His estimates are always spot on and inclusive and he is focusing his time 100% on the job at hand, ie, he is not running around doing many jobs in parallel. He gives an estimate, he comes in, and he completes the work. I highly recommend Diamond Construction and Justo for any major or minor remodeling or repair work. read more

I emailed and then I called and never got a response. I was looking to getting some work done in my kitchen. Taking my business elsewhere.

I can't say enough positive things about Justo but I will say a few. He is very professional, reliable and one of the nicest people with the calmest disposition that you will ever meet. We needed some work done at our new business location and he was able to complete the work in a timely manner and did exactly what we wanted. He gave helpful suggestions and kept us updated throughout the entire process. I randomly chose this company because I had a good feeling about it and I was right. We will use him for any other general construction needs in the future and will recommend him to family and friends. read more

I usually don't write reviews but I had to for this gentleman . He is exactly what you need for a job well done and done ONCE. If You want reliability and quality then he is your man. He is punctual and his workers actually work so as a result the job gets done fast. I initially hired him to do a roof job and I loved it so much I kept hiring him for more jobs. He is now my everyday construction guy for anything . I highly recommend him . He is also a good honest person who is not pushy and very cordial . You will not regret your decision . read more

I hired Justo to put tile in my living room and family room. He did a beautiful job! Justo and his team are professional and trustworthy. Extremely courteous and a pleasure to do business with. Very punctual and finished the job in a timely manner. I'm a local Realtor and felt comfortable referring Justo to my clients. I have heard nothing but good things from them as well. I would recommend Diamond Construction to anyone who wants good quality work done. Can't wait to start the next project! read more

Beware! I spoke with a man from Diamond (General Construction) three times on the phone (landline) regarding a free estimate on my roof. The second call he asked me to text him my address. I have a pay-as-you-go Trac phone for emergencies only, but texted him my address. He came out to look at my roof and asked for $75. I told him I don't pay for free estimates and no one had ever asked for money for an estimate. He said he texted me that he was going to charge me $75. Since my cell is for emergencies only, I don't check it, so, obviously I did not agree to a charge for a free estimate. Beware that he might do this to you! read more

Did the flooring in my home came out exactly how I wanted it. Very nice and helpful. Justo will be in my future renovations without a doubt. read more

Diamond General Construction Co. - Flooring - General Contractors Near Me - Lancaster, California

Would add more stars if I could , justo and his team were amazing on aseemblint my studio and very quick , the project was meant to be stems to a week and a half but they got it done in 5 days , appreciate the hard work ! read more

Justo was very professional, neat and clean. He accommodated my schedule and answered all my questions. Lovely job. Definitely will call again if/when I need drywall work done again. read more

Very happy with our shower and tile added to our 1/2 bath. Very reliable and great work.

Justo was awesome. We had a water heater problem and needed drywall to be repaired ASAP. He came the next night and completed it fast, very efficient and a very fair price! I will always turn to him for anything else I need in the future. read more

Great experience from begging to end. Owner Justo is honest, fair, and delivers on his promises. He actually finished my project faster then expected. I am going to use Diamond General for all of my future construction projects. Thank you for doing such an outstanding job. read more

Justo did an amazing job on our several construction projects. He is very professional, very friendly and gets the job done in a timely manner. read more

I've hired Justo for various projects and he's so pleasant to work with. He not only provides fantastic work, he's trustworthy. I fully trust Justo coming into my home when I'm not around and feel 100% at ease. He's detail oriented, and reasonably priced. I already have some more projects lined up this coming year and can't wait to see how it all turns out! -Robbie read more

Justo and his team did a great job on our master shower remodel. He was very transparent with all the costs and was very professional. I will be having Diamond construction back for more renovations very soon! read more

I honestly thought that due to COVID the project would take a little longer, but they we're done within a week! Great job on the closet and they're constantly communicating with you if they run into a problem. I found them on Yelp and don't regret choosing them! read more

Request an review of work performed by another contractor. He was able take a look and provide feedback.

I hired Justo to finish on my kitchen because the one guy I hired bailed on me before completing the job.I was afraid to hire anyone else because my experience was such a nightmare with this guy.He played so many mind games and gave excuses to not showing up or doing the work.Justo was so polite and professional and I was extremely happy and relieved that there are still good working people in this world.I felt such a relief that him and his other worker showed up on time and were confident in their abilities and it showed 100%.They got the work done fast and done right.I was so happy when I saw my kitchen finally completed and beautiful that I just wanted to cry for joy.Well worth the money spent and affordable pricing. read more