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    MasterPlan Construction

    4.7 (69 reviews)
    Closed 8:00 am - 6:00 pm

    Services - MasterPlan Construction

    Bathroom remodeling

    Building additions

    Kitchen remodeling

    7 More Services

    Guest house or ADU construction

    Manufactured home construction

    Modular home construction

    Single-family home construction

    New structure construction

    Remodeling

    New room addition

    MasterPlan Construction Photos

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    Recommended Reviews - MasterPlan Construction

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    Reviews With Photos

    Before
    Mark H.

    Hi my name is Mark and my wife and I purchased a old home and we were apprehensive about taking on an old home that needed a lot of attention! With that said, some friends recommended to use Cornerstone Construction and they had great good reviews online. So we decided to give them a call and someone name Jon Duey answered and he came to see us a few days later. After hearing their prices which were not the cheapest or the most expensive...we went with them because of their knowledge and professionalism. Jon is a great guy and he's a architect so he gave us real advise with no BS... They finished our kitchen remodel which was intense...we moved the kitchen into a different room!! I'm attaching the before and after but it's kind of unbelievable because the two pics look nothing alike! We are super happy with our new place and thank god for meeting a company that approaches construction with a "non sleeze " manner and everyone on their team was polite and friendly. Highly recommend this company to anyone looking for real quality with genuine people to help you achieve any dream projects you may conjure!

    Mena S.

    My wife and I live in the Santa Clarita area and we reach out to multiple contractors to help us build a retaining wall, concrete stairs, and a two car parking area on our hillside. We were jerked around by most of the guys who came to give us proposals, most of them just felt like used car salesmen who just wanted to close another deal without hearing out what we wanted. We were urged by a friend to look up there license standings with the California State License board and we realized that most of them had either been working without a valid license or had their license revoked for one reason or another...but there was one or two companies that had it all together...out of five or six people that came out!! We ended up feeling comfortable with the guys at Cornerstone Construction because we felt like the guy the came out to meet us "Jon" was genuine and knowledgeable and was not the sleazy salesman type. Jon was the name of the man we talked to us and eventually got us through the whole process, Jon Duey is a good guy and a Licensed Architect too! Jon was very detailed in his approach and even helped us flesh out our plans...everything came out great and they were very nice to deal with to the end. I would refer them again to anyone who would need help. Thanks again Cornerstone for helping us! IMG_019

    Paul M.

    When my fiancé and I started talking about purchasing a property, we knew that the skills of a honest and reliable contractor would be needed. I started asking my friends if they knew of such an individual, and one of them referred me to the owner of Cornerstone Construction, George Abraham. Going into our first meeting, I was a bit apprehensive, but my fiancé put me at ease. Once George quited us prices and explained his process, I knew we found a straight shooter with character, integrity, and basic human kindness. George and his team began working on our yard within a short period of time and have made much progress. George has even offered many suggestions, which we never would have thought about, all while staying in within the agreed upon quote. We cannot wait to see how our vision is played out, but are very appreciative of the kind hearted George Abraham and Cornerstone Construction. Thank you!

    Kitchen update
    Tim G.

    I hired Cornerstone to do pretty extensive renovations and improvements to our office building. I met with George and felt good about his knowledge and also his ideas (I had no idea what I really "wanted" and needed alot of help with ideas). In a nutshell, George and his team (Jon and Daniel) delivered on everything without a single hiccup (and that's with me making a few change orders). I actually found Cornerstone on Yelp which I thought was funny for a contractor, but it worked out fantastic. I did have two other guys bid out the job, they just didn't have the same professionalism and frankly looked to me to provide every detail which is not what I was looking for. As a consumer, I wanted to someone that would give me ideas, follow through and do great work, and that's what I got. I'm going to post pictures but they probably don't do total justice without the "before" pics.

    Alain S.

    Jon and George were wonderful during the construction of the project. They worked great through any issues that came up. They were able to execute the project with a great attention to detail and high level of responsiveness (Jon usually called me back within minutes and never failed to call back) for the master bedroom/bathroom and ADU work that I had done. What's more, they are good and honest people. I will call them again for any future projects. I sincerely recommend them.

    I am the facilities manager for a business in Sherman Oaks. We have a small campus with three buildings. After interviewing many contractors, Cornerstone was the only company who showed the confidence, conveyed the dependability and wasn't deterred by the renovation of our interior space of 3000 sqft (I say deterred because we wanted a tenant improvement, but didn't want to pay an architect for professional drawings). Jon, an owner of the company and architect, really understood our vision and design concept for the space.Their bid was fairly priced and I always felt that I was working with an honest group of guys. Cornerstone is an A-class professional company. Jon was always available by phone and very responsive to emails and text messages. Mike, the foreman/project manager, was my onsite and day-to-day contact. Mike was the easiest person to work with. He was also very responsive to all of my communication and took time to explain things and find the best solutions to any challenges that arose. He made sure that the construction site was clean, safe and organized. He also has a very calm demeanor and makes most challenges seem like no big deal. Lastly, Cornerstone has relationships with sub-contractors who are each experts in their various fields. I can't say enough good things about Cornerstone and would recommend them to anyone looking for a contractor.

    Michael S.

    Look no further, my wife and I finally found a company with quality and honesty...working with Cornerstone our ADU/guesthouse was a nice experience compared to previous experiences working with contractors. We loved the guys we worked with on a day to day basis. Our project manager Mike was really on top of things and we felt like we didn't have to chase them to keep the project moving (unlike previous experiences with other contractors who will remain unnamed). We also had a lot of experiences with Chewy who was the foreman who did some of the work on our guesthouse and I've never experienced a better guy when it comes to this guys amazing attention to details! Our guesthouse was done from the ground up with permits and all through Cornerstone's all in one system. Thanks to all the guys who helped us bring this home to life!

    I have worked with MANY contractors in the past and I have always had a problem with every remodeling project I have done. The time frame is never what they promise and it takes much longer and the outcome of the work is not that great. I hired Cornerstone to remodel my floors and they did an amazing job I can't complain about anything! Everyone else that quoted me said it would take 5-7 days and George at Cornerstone told me between 2-3 days. He had a professional team come out and work on my floors yesterday and completed EVERYTHING in one day I couldn't believe it. My husband is very picky with the finished product every time and always points out a scratch or dent when he sees it and this was the first time we were both happy! I'm so happy we finally found a good and RELIABLE contractor. My dad always said finding a good contractor is like winning the lottery! Haha Thank you so much George! We will be hiring you again for our next project for sure!

    After shot
    John R.

    I figured now that it has been over a year since my initial remodel with cornerstone, that I should write an update on the things that have developed since. As I wrote in my previous review, I had a glowing experience remodeling my entire newly purchased home. I had just left the downstairs bathroom, the laundry room, and a few odds and ends incomplete. I had George come back in to finish the place up, and we both got our creative juices flowing on the downstairs bathroom. It was honestly a ton of fun - we would visit the tile places together, and look at fixtures online together, and really got to feed of of each other's creative energy. We had websites like pinterest and houzz up tossing ideas back and forth, and finally we created the ultimate bathroom (at least in my eyes :) ). When people come over they say it looks like something out of a fancy hotel, everyone is blown away. Better yet, it cost SIGNIFICANTLY less than other contractors wanted to charge for a completely basic/boring bathroom. In addition, I had an issue with a couple of the cabinet doors in the kitchen getting some paint bubbles in them - no questions asked, George took the doors to his cabinet maker and had them all re-done. What an incredible business/owner to partner with on both large and small contracting projects!

    Mina G.

    I own a dental clinic with a couple partners and we were looking to renovate some areas in order to expand for more space. We updated the waiting area and subdivided the space differently to maximize the space we have. We contracted Cornerstone, they came in for an initial estimate, and we got started almost immediately after we agreed to the plan. The project manager, Mike was great to work with. Understood our needs and was very friendly and accommodating. Throughout the process, I was kept up to date with progress via calls/emails/pics. The service I received was very professional and fast (something I kept stressing due to downtime of closing clinic). I highly recommend cornerstone construction for transforming any commercial space. We'll be using them for our next project as well!

    Construction of the space

    We just wanted to get into our space ASAP and we signed our lease really late in the game!!! We gave Cornerstone less than 2 months to finish our space and they had to go through all the city inspections!! We had a 1,655 sqft space in a medical High rise in Glendale California and our Psychiatry office had to open on time...the space was difficult to work on because of the logistics of having to work on nights and weekends! Great team (Jon and Mike), wonderful time management, and reasonable prices (they weren't the cheapest but fair), friendly tradesmen (none of that harsh mechanic types). We are definitely gonna be reaching out to them again!!

    Sameh B.

    I hired Cornerstone Construction and their team a while ago to help us with our office space, we needed to reorganize the space and move some walls around. Cornerstone had to do a lot of electrical modification to the lighting and wiring because of the change of layout. Cornerstone quoted us a approximate start and stop date as that was critical to us getting back to work. They were very good about starting on time and completing the work even a couple of days early. Their team which includes George and Sam and their team were really professional and they conducted themselves in a professional manner. Looking into the future we will be working with Cornerstone again! It is difficult to find a company that give you quality, efficiency, and customer service!

    Mimi M.

    We used cornerstone to remodel our commercial office space. Customers are always extremely impressed with the office, and several people have commented that it must have cost a fortune to do. It's our little secret that it didn't :) George was by far the best on price and created a space that looks exactly the way we imagined and discussed it! Every time I walk into the office I look around at the clean, modern, elegant design and thank my lucky stars that I found George and cornerstone. He worked with us from start to finish in envisioning/drafting the design, getting it approved with the office landlord, selecting materials (and saving us a ton) and completing the buildout. He even had his folks work collaboratively with building management on things like, wiring, plumbing and telecommunications. 5-stars for my go-to commercial contractor.

    a conference room with a projector screen

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    Page 1 of 2

    Ask the Community - MasterPlan Construction

    Review Highlights - MasterPlan Construction

    Everyone else that quoted me said it would take 5-7 days and George at Cornerstone told me between 2-3 days.

    Mentioned in 44 reviews

    Read more highlights

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