Staff over there is good and helpfulWe met AnnaShe is nice and friendlyOverall good experience

Ive been a customer of Geoffs ever since he opened at his previous location near downtown Concord. For all my maintenance or performance parts installation needs, Geoff does a fantastic job at it. I highly recommend anyone who needs a go to mechanic to contact Geoff, you will not be disappointed.

Happy to recommend this shop for installation of aftermarket suspension pieces. We had an Eibach Spring Lift kit installed on our 2020 RAV4 Hybrid. Geoff had it done in under a day. Booking the appointment was easy and so was the whole process with the shop. If youre looking to have some work done on your vehicle, this shop is definitely recommended.

Fastest suspension job Ive ever had done. This man knows what hes doing.

What can I say other than Wow! I work for a luxury brand dealership and I couldn’t believe it only took Jeff an hour and half to install a complete Magna Flow exhaust system and FIX my “clunking” coil over issues.And the pricing was Beyond fair! Honestly I was stunning at the speed, the work and the price. I’m officially a long term client.

Had my front splitter installed here awhile back. Still holding on strong.will be returning for more work hopefully soon

I highly recommend PowerHouse Designz Automotive, for all your auto repair needs. During the various times I have used their services, I have found that Geoff (the owner), has an incredible amount of knowledge, and experience in dealing with all types of cars. His rates are very reasonable, and hes willing to let you provide the parts for the repair or upgrade. My current project is the restoration of a 96 European sports car. Eventhough I have the knowledge, and tools to perform all the upgrades, I decided to use PowerHouse Designz for a portion of the work. I had already purchased all the parts for the upgrade. I decided to call a number of auto repair shops in the Concord, and Walnut Creek area that are capable of doing the upgrades to this unique car. I wanted to find out the cost to perform these major upgrades, because I didnt have the time. The only shop that had the ability, and the willingness to use the parts I had purchased, was PowerHouse Designz. A number of the other shops I called were much more expensive, and at times very rude. They lectured me about my request to use my own parts, and that I was cutting into their profit margin. Considering that this is an unusual car, I thought I was doing them a favor by getting the exact parts I wanted used, some of which are hard to find. The only shop that was very pleasant, and willing to work with me, was Geoff at PowerHouse Designz. The work that was done on my car was excellent. In addition, when I determined that 2 parts should have been installed the first time the work was done, I called Geoff and he agreed to install them at no charge. Ive been restoring cars most of my life, and have used auto repair shops from time to time. My experience with Geoff, and his shop, has been the best in my recent memory. Because of the work Geoff has done so far, I intend to have PowerHouse Designz perform some additional upgrades, that I would have normally done myself. When I have been at PowerHouse Designz, I have seen all types of cars being worked on. I highly recommend that no matter what car you have, that you consider PowerHouse Designz for your auto repair or upgrade needs.

Awesome work from Geoff. Work is done on time and within budget. They took care of both of my cars (Japanese and German flavored) without issue, from brakes and oil changes to aftermarket performance parts. They have no problem with bringing your own parts, which is great for online shoppers like myself. Geoff is great about updating you throughout the process and will notify you of any changes. Really glad I started coming here and will continue to do so. Well worth the visit.UPDATE Jun 2020: Geoff continues to do top notch work. Relaxed personality, easy to talk to, and work that speaks for itself. Thanks again for taking care of my car, getting the services done on time and at a reasonable price.

Geoff is a very knowledgeable, honest car mechanic. I originally found him to repair my Infiniti, but he ended up doing some engine work on my wifes Toyota. In fact, he was able to get her navigation system working since it was non-functional for three years. We were bracing and budgeting having to replace the entire unit, which wouldve broken the bank, but he ended up fixing the darn thing!! The dealer told us we had to replace it!! Geoff came to our rescue and got it working again, finally. All around, awesome service. Will definitely be using him as our familys car mechanic.

I exchanged email with them (embarrassed to say I forgot the owners name) and then dropped in some time later. They were able to see and understand my vision for my car and addressed the concerns I had with the more practical aspects of the modifications I want to have performed.Because my project involves a change in wheels, tires and tire profiles, it is good to know that PowerHouse Designz can be my one-stop shop

These guys are top notch. Rob has been great. I found them through Livingsocial and so glad I did. I have been faithful. They are honest, they show you everything they are talking about and like very one else they are better than the competition on price and service. 100% on quality and they go above and beyond.

Geoff gave me a great deal on some coilovers they had on display and installed them in a timely matter for a great price. Got the ride height exactly where I wanted. Ill definitley be recommending his shop!

Best of Best

Excellent work, I provided parts, job was done very quickly, and it didnt destroy my wallet in the process. Would definitely recommend to friends. will be coming back for more work on my subie.

Excellent customer service and professionalism. Will keep coming back for sure!

Great service, great work.

Great shop