Donald was great to work with. He was so informative and walked us through everything we needed to…read moreknow.

Don is incredible. He is highly professional, extremely knowledgeable, and truly the go-to person…read morein Contra Costa County.

A neighbor informed me that based upon a survey he had done for an addition that our mutual fence…read morewas up to 14 feet into their lot. I contacted Bob at Apex to get our own survey. When I called Bob, he informed me that he had just done a survey for a different neighbor, and that it had been complicated by monuments that had been removed over time. He used this other work to look at the survey that had been done for my neighbor and thought the results would be different if his surveyor used the same approach that he had. He volunteered to contact the other surveyor who he knew and respected to share his survey and ask about reconciling the two. The other surveyor got back in touch with him and agreed to his approach, which reduced the fence encroachment significantly. Bob did all of this without charge! I truly appreciate his integrity and knowledge in helping me even though I wasn't yet a client.

My new next door neighbor Pedro gave me only 1.5 days notice before starting digging for a new…read moredriveway to store their gigantic GVWR 14000 LB hauling trailer in between my house and his house. I did not know Pedro was to start digging at 8am on 12/13/2025 (Saturday) until PG&E came to mark the gas line around noon on 12/11/2025! Worse yet, my neighbor Pedro encroached on my property when marking the property line by himself! It was somewhat obvious because a few other neighbors noticed things did not look right, and brought the issue to my attention in time! Yet when I talked to Pedro, he brushed me aside and refused to pay for a survey! In a situation like this, Bob from Apex was an answer to my prayer. He was extremely professional, capable, and kind. He came out right away to check the property line w/o being paid, and advised my neighbor Pedro on where the correct property line should be. It turns out Pedro's marks were about 2 feet into my property ! Bob left my neighbor Pedro to mark the property line and the situation is still unresolved. Yet I'd like to thank Bob for his help. He is amazing and my hero!

Cosmin is very responsive and helped us throughout the process. Will highly recommend.read more

Exceptional Service - Professional, Efficient, and Highly Skilled!…read more I cannot recommend Cosmin enough! From the very beginning, he demonstrated a high level of professionalism and expertise. I needed a land survey done quickly for my Adu addition in San Jose, and Cosmin was incredibly responsive to my request. He listened carefully to my needs, provided clear explanations, and delivered results faster than I expected. What stood out most was his attention to detail and willingness to answer all my questions. Cosmin made the entire process seamless and stress-free. If you're looking for a land surveyor who is not only highly skilled but also acts quickly and values customer feedback, look no further. Five stars without a doubt - I'll definitely be using his services again in the future!

I was really impressed by this company. I was having a ? over a tree and where it lay in relation…read moreto our property lines. Both Eli and Emily were patient, took the time to have a detailed conversation about what a survey might involve and cost, what it might answer and not, and also helped give me ideas on how to progress should I opt not to get a survey. In the end, the solution turned amicable with neighbor and I did not go for the survey at this time, but I feel this is my company should the need arise in future. Their pricing was competitive against two other companies I contacted at the outset, but their professionalism stood out - other reviews also point to a decent company that will treat you fairly. They were also gracious and kind when I told them the survey was no longer a go, despite having filled out paperwork for me to sign. Thank you both, will store your details away for the day it is needed.

These guys were great to work with. I called around to a few places for survey work relating to…read morefence and property lines. I ultimately went with Emily/Eli as they were very professional and took the time to respond to many questions and explain the process, both before and during. They were also very thorough with their work as well as exactly on time on the day of! I'd definitely recommend them!

Emily and crew were great! We wanted to know where our property lines so we could eventually…read morere-build our fence. They helped us understand how the process worked, showed us where the markers went and what they meant. Submitted the record for us and sent a copy! Very happy with everything.

Submitted a request via the website, was asked to provide the info which I did. Then got a rude…read morereply: "we are not pursuing this project". No further explanation. Great way to take care of a potential customer. Follow up: Got a reply with the explanation after the review was left.

* I hired Subtronic Co to search for a leak in my home and they charged me $1005…read more * I was working from home on the day they arrived . The entire house was not checked for leaks. My office was not checked as I was sitting there. * It appears subtronics contractor found one leak in the hallway turned off my radiant heat and left. A few days later I found my bathroom has a leak. We have not turned the radiant heat back on. It is 52 degrees in our home Subtronics Co wants to charge me for another leak detection. The entire home was not checked inside for leaks as they promised. I did not pay for partial leak detection. I am subsequently required to find a second company to come to my home to detect a leak and manage my radiant heat. This company operates in a fraudulent manner.

I would give them zero stars. They are a total rip off. I paid over $2300 for them to see if…read morethere was a leak in our watering system and then to see where the clog in the system was. They didn't fix anything, they send extra bills after the fact and it was a complete and total waste of money. DO NOT USE THESE PEOPLE!

Rod Sherry of Cullen-Sherry is wonderful. He knows his business. Trusted by many in Benicia for…read moretrusted evaluations and reports by many locals. Highly recommended. He has done many reports for locals.

This Land Survey Company is unethical. The survey that Thomas Lee and I paid in full (on 212 Craven…read moreStreet, Vallejo, Ca) was erroneously put in Ron Rohrer's name. Rohrer owned the property at 210 Craven Street. The survey revealed that the Rohrer property enroached on the 212 Craven Street property including the retaining wall, the fences and the entire length of the original house. When notified of their error, a certificate of correction signed by Daniel W.Cullen, P.E. License # 26162 was sent to Sandra & Thomas Lee, dated September 27, 2006. Mr Cullen DID NOT CORRECT THIS WRONG ATTRIBUTION OF WHO ORDERED THE SURVEY! The Certificate of Correction for Record of Surveys Notice states that the above-.referenced survey was made at the request of Sandra & Thomas Lee AND RON ROHRER IN MARCH, 2006. This is a false statement. Ronald Rohrer had no part in the ordering of this survey nor did he pay ANY of the costs. The entire survey was ordered and paid in full by Thomas and Sandra Lee. Under no circumstances do business with this company. They engage in fraudulent actions, acting without integrity.

Person who Answered the phone told me the surveyor is backed up for 8 months asked me if I wanted…read moreto wait said No she hung up. Lol that was a wow

From the owner: Civil engineers, land surveyors, municipal consulting, design services, GIS surveys, elevation…read morecertificates, grading, drainage, parking lot design, lot line adjustments, parcel maps, record of survey, curb, gutter, and drainage.

I needed an elevation certificate for my property, which is in a flood zone in Napa. Brett did the…read morejob for me quickly, thoroughly, and for a fair price. Brett is a nice guy, a good communicator and very conscientious. He knows a lot about construction and the fine points of FEMA requirements. I unreservedly recommend him for your "El Cert".

I highly recommend Brett Eide. He is not only a pleasure to work with but also very knowledgeable,…read morea great communicator, very professional and punctual. He patiently answered all my questions regarding the elevation certificate and helped me through the process with dealing with FEMA.