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Rockridge Builders

Contractor - Remodeling & Additions
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Alameda  Contra Costa  Solano Counties
Diamond Certified Company Report
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Rockridge Builders
75 SURVEYS
  • star image
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  • Rating
23 CONSECUTIVE YEARS
SINCE SEPTEMBER 2002
CERT 166

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75

Verified Customers

Surveyed

Customer Loyalty

Customer Satisfaction

Helpful Expertise

READ ALL 75 SURVEY RESPONSES

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Diamond Certified Researched Articles on Rockridge Builders

researched article

An exterior patio project by Rockridge Builders

Rockridge Builders offers a wide range of design, engineering and construction services to residential, commercial and industrial clients throughout the East Bay. The scope of its projects runs from small kitchen and bathroom remodels to new custom homes and businesses. Competitive pricing and a fierce dedication to quality work and service have earned the company a growing base of satisfied customers who are quick to refer others, says owner Bill Hinkamp.

Mr. Hinkamp is a lifelong design/build enthusiast and a graduate of UC Berkeley’s College of Environmental Design. He founded Rockridge Builders in 1976 and says he has since built a highly regarded reputation among local homeowners, architects, and engineers. “We’ve completed more than 1,000 projects over the years, ranging from commercial tilt-ups to Victorian restorations to custom homes.”

“We believe there are three elements that go into a successful project. First, the project must be built to the highest possible standards. Second, the job must be successful as a value project for us and the client. Third, customers must refer us to their friends and associates in years to come. This won’t happen unless we make it our mission to achieve complete customer satisfaction on each job. We do this by providing superior communication, workmanship and attention to detail.”

Design-build is here to stay.
Over the last few decades, design-build has become an even bigger part of the construction industry. The reason, explains Bill Hinkamp of Rockridge Builders in Oakland, is that construction drawings no longer contain the detail they once did. As a result, every construction project must, by necessity, have an element of design to it—to bridge the gap between drawings and construction.

You might be well served, says Mr. Hinkamp, by a construction firm that specializes in design build. “Often, contractors will get design drawings for a project that amount to little more than a floor plan and an elevation. It may be devoid of any other details, including locations of electrical outlets, selection of electrical lighting, and mechanical plumbing. Even foundation details are often absent.”

Today, it’s almost expected that a contractor bear these responsibilities, says Mr. Hinkamp. Once, homeowners would have contacted a design professional at the outset of a project, but today, it’s often contractors who get the first phone call, he says.

Also, warns Mr. Hinkamp, the industry is far less regulated than it once was. The California Board of Contractors has little manpower or policing powers. “There are a lot of people who are operating around both the law and good practice,” he says.

For example, a contractor can’t accept a down payment that exceeds $1,000 or 10 percent of the total cost of the project, whichever is less. If a contractor tries to collect more, Mr. Hinkamp advises customers to stop the process immediately and switch contractors.

Rockridge Builders is happy to provide this further information on how to select a contractor:

I. SELECTION CONSIDERATIONS
A. WHAT CONTRACTOR OR SPECIALTY DOES THE JOB REQUIRE?
1. New Construction
2. Structural repair/ foundation work
3. Addition/ remodeling
4. Design and Building experience
5. Job scope below $10,000
6. Repair work/handyman job

B. HOW DOES ONE FIND A COMPETENT CONTRACTOR
1. Referral from trustworthy friends and acquaintances
2. Recommendations from your architect/ engineer/ designer
3. Trade Association referrals

C. SHOULD I ASK FOR PRELIMINARY ESTIMATES?
1. Is quality or cost your primary consideration? If cost only, skip to D-1.
2. Preliminary cost projections can be very useful in defining the scope of your work within your budget. Estimates are a labor intensive service often performed without cost to you. A good contractor will be candid in helping you close the gap between perception and reality in costing and budgeting your job. An experienced professional contractor is not bidding your project at this stage. He or she is helping you to define your building costs to work within your budget. Do not discount any contractor on the basis of preliminary estimates. If preliminary estimates are too expensive, either scale back your project or go back to C-1. Be honest with yourself.

D. HOW MANY CONTRACTORS SHOULD BE INTERVIEWED AND HOW SHOULD THE FINAL SELECTION BE MADE?
1. Is quality or cost your primary consideration? / If cost only, skip the rest of this section, advertise your job at the local builders exchange, and cross your fingers.
2. Ask no more than three contractors to look at your job. If competitive bidding is still important, review #1.
3. More than any other professional experience/ investment in your life, your relationship with your contractor will be the longest, most personal, most impactful than any other that you may have during your lifetime.
4. Your primary consideration should be to select the contractor that you feel will live up to your expectations of quality, responsiveness, communication, and compatibility. Your building investment is an investment not only in dollars, but in the quality of your life ... often the rest of your life.

II. CONTRACTS - WHAT KIND ARE BEST?
Because everyone is different, there are differing levels of contract risk and security. There are three basic kinds of contracts and an infinite number of hybrids. (One hybrid is explained below):

A. FIXED BID
Simple. What you see is what you get - unless of course there are a lot of additions or changes during the course of construction.

Possible drawback:

All risk resides with the contractor. Accordingly, certain allowances must be built into the contract price to allow for the unexpected. If you are a great customer and the unexpected becomes minimal, you may be paying too much in the end.

Largest drawback:
Many contractors today are in the habit of "lowball" fixed bid pricing in order to contract with the anticipation of adding costs to the job with change orders for work that was not estimated properly. They typically oversell the low price issue and use it as a marketing tool. This practice hurts everyone.

In the end, you may pay far more than you would have from a contractor who estimated the job properly.

B. COST PLUS A PERCENTAGE
Cost of doing the work and conducting business is clearly defined in the contract, and records are carefully kept to reflect this cost. Progress billings include costs plus an agreed upon fee which is a percentage of costs being billed. The advantage to this type of contract is that you will only be charged for work that is actually performed and no more. Usually, the contractor is willing to make his fee very reasonable because the owner assumes the overall cost risk.

Possible drawback:
Imperfect communications about the cost impact of changes in the work or unexpected conditions may lead to higher than anticipated overall costs.

C. COST PLUS A FEE

Similar to B, instead of a percentage of costs being charged, the fee is a fixed figure, which is predetermined before the start of work. The risk here is shared. The incentive for the owner is that the profit paid to the contractor will be fairly represented by the preliminary estimates prepared by the contractor. The incentive for the contractor is to complete the work in a timely manner.

D. HYBRID - COST PLUS A PERCENTAGE WITH A MAXIMUM PRICE
Combines A and B.

Guarantees a maximum price for the work (before changes or additions) while only charging for costs incurred. Included is a contract provision for rewarding the contractor with a percentage of any savings realized below a maximum price. This provision creates a unity of purpose between the owner and contractor for keeping costs down. A real win-win for both parties.

According to owner Bill Hinkamp, Rockridge Builders excels at providing solutions to challenging and complex problems. As an architectural graduate from the University of California at Berkeley, Mr. Hinkamp has extensive design-build experience and skills, and he sees his talent for finding creative solutions to clients' building problems as a distinguishing attribute.

Rockridge Builders approaches every project "as though it was built for us," says Mr. Hinkamp. Though home renovation is his business, he understands his customers have deeply personal and possibly lifelong stakes in the outcome of a project. It's an obligation "we take extremely seriously," he says.

Since its founding in 1976, the Oakland-based company has completed more than 1,000 projects, ranging from commercial tilt-ups to Victorian restoration to custom homes. "There's nothing we haven't seen," says Mr. Hinkamp.

Rockridge Builders provides a "complete package," taking total control of each project. Clients always know what to expect, says Mr. Hinkamp, because he walks them through every phase. Communications are marked by openness and honesty.

Diamond Certified Researched Capabilities on Rockridge Builders

Service Area

serving area
the East Bay
Serving the East Bay

Main Services

Contractor - Remodeling & Additions
  • Basement Remodeling
  • Bathroom Remodel
  • Bathroom Renovations
  • Bathtub Replacement
  • Custom Home Remodeling
  • Garage Remodel
  • Home Remodeling
  • House Remodeling
  • Kitchen Remodel
  • Shower Remodel
  • Sunroom Addition
  • Tub To Shower Conversion

Additional Services

Commercial, Industrial, & Residential Design & Construction
Design & Build Services
Foundation Replacement
Remodeling
Additions
Improvements
Retaining Walls
Drainage Systems

Company Info

Hours
Mon
08:00 am - 06:00 pm
Tue
08:00 am - 06:00 pm
Wed
08:00 am - 06:00 pm
Thu
08:00 am - 06:00 pm
Fri
08:00 am - 06:00 pm
Sat
Closed
Sun
Closed
Closed
Mon – Fri: 8am – 6pm
Website
Contact
Rockridge Builders

Capabilities Table

Company Name
Rockridge Builders
DCID Number
DCID5105351682, DCID5103886273
Managers
Bill Hinkamp, Owner
Years in Industry
42 (Manager)
# of Employees
10
License
324919
Memberships
Better Business Bureau, National Association of the Remodeling Industry (NARI)
Insurance
Liability Insurance,
Workers' Compensation
Founded
1976
Customer Type
Commercial, Residential
Warranties & Guarantees
5-Year Warranty on All Work, 1-Year Unconditional Warranty on All Installed Fixtures

Certifications & Awards

diamond certified logo

Key Factors

Rockridge Builders Established in 1976
Established in 1976
Rockridge Builders Diamond Certified Expert Contributor
Diamond Certified Expert Contributor
Rockridge Builders Worksmanship Guaranteed
Worksmanship Guaranteed

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Diamond Certified Expert Contributor Advice & Tips

Bill Hinkamp is owner of Rockridge Builders, a Diamond Certified company since 2002. He can be reached at (510) 761-6917 or by email.

Bill Hinkamp is owner of Rockridge Builders, a Diamond Certified company since 2002. He can be reached at (510) 761-6917 or by email.

Bill Hinkamp: Designing and Building a Career

By James Florence, Diamond Certified Resource Reporter

OAKLAND — Even while studying architecture in college, Bill Hinkamp never lost his love for construction. Later, he would merge his dual interests into a single professional venture. “I’ve always been involved in construction and I continued to be attracted to the industry during my time at UC Berkeley,” he affirms. “Since I was studying architecture, I increasingly began to see construction as a design/bui...

Read Full Article - Bill Hinkamp: Designing and Building a Career

Rockridge Builders Website and External Feeds

FAQs

By Rockridge Builders

Can you assist me with design and product selections?

Who will be running the job?

How long will my project take?

I’m always hearing about projects that spin out of control. Will mine?

What’s it like to live in a house during construction? What’s your policy on clean up?

What can you tell me about your employees?

Rockridge Builders Ratings and Survey Responses

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Rockridge Builders
75 SURVEYS
  • star image
  • star image
  • star image
  • star image
  • star image
  • Rating
23 CONSECUTIVE YEARS
SINCE SEPTEMBER 2002
CERT 166

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

Phone Survey Responsesfrom 75 Verified Customers

Ann B.

They did the job better than I was expecting.

One thing I liked a lot is the fact that they were safe while on the job. I thought they were competent, conscientious, and informative. I felt like they really knew what they were doing and not just winging it.

Verified Customer of Rockridge Builders, 1 of 75

10 Quality
Yes Loyalty
C.S.

Great attention to detail

Attention to detail and thinking of things I didn't think of

Verified Customer of Rockridge Builders, 2 of 75

10 Quality
Yes Loyalty
Agnes R.

They did a good job.

The way that they worked was great. The price wasn't bad.

Verified Customer of Rockridge Builders, 3 of 75

10 Quality
Yes Loyalty
Jonathan P.

They are a small, professional, and a local company. They do great work. They really understood our unique needs and did a great job. They also did a small and larger job for us. They have the right subcontractors, and we would definitely use them again.

I would say the owner, Bill, really stands out. He is a very personable guy and very responsive.

Verified Customer of Rockridge Builders, 4 of 75

10 Quality
Yes Loyalty
Will K.

They were very easy to work with, and they were just wonderful. I cannot say enough about them. The job was very intrusive, and they really went with the flow. They did very high quality work, the subcontractors were great, and the crew was amazing.

I would say just the whole thing, in addition to everything else, they were very neat and tidy. They just did an amazing job. We had life experiences intrude part way through the project, which threw a monkey-wrench into everything. They reacted wonderfully and just got the job done.

Verified Customer of Rockridge Builders, 5 of 75

10 Quality
Yes Loyalty
Charles H.

They were excellent, and Bill took care of all of the permits, which was really helpful. I liked all of the subcontractors that Bill uses. They have been with him for a long time. They are all great, really reliable, and trustworthy.

Bill comes to you with very high standards.

Verified Customer of Rockridge Builders, 6 of 75

10 Quality
Yes Loyalty
Teresa L.

I would highly recommend them to anyone. They have a standard that is so high, and they do not compromise. They are far and above light years better than anyone else. I will only work with them in the future.

Two things come to mind, the supervisor, Jay, always made me feel taken care of. He was always proactive and so responsive. Also, the owner, Bill, doesn't do anything halfway. He has his own very high standards and does not compromise, as I said before.

Verified Customer of Rockridge Builders, 7 of 75

10 Quality
Yes Loyalty
Charlotte D.

I would say they're very efficient. Everything looks better than it did when it was new. The guys are all very nice and courteous. They're a little on the expensive end, but you get what you pay for.

I like that they're on time, neat, and that they always explain what they're doing. If at any point they wanted to tweak something, they would run it by me first, which I appreciated. They finished on time and on budget. They were here for about 4 months doing a fairly large job. I don't think I ever had a bad day with them or ran into any issues.

Verified Customer of Rockridge Builders, 8 of 75

10 Quality
Yes Loyalty
Andy C.

I have used them before, and they just do great work. They provided great craftsmanship with strong attention to detail. They were very thorough and conscientious.

They were very strong working on historic buildings.

Verified Customer of Rockridge Builders, 9 of 75

10 Quality
Yes Loyalty
Chris B.

They were very thorough with the assessment and quote process. Their team was just outstanding, and they did high quality work. They were also very respectful.

I would say the communication was very strong throughout the job and that stood out for me. There were no surprises. He also found the best way to accomplish things without charging a lot. They just really struck a good balance.

Verified Customer of Rockridge Builders, 10 of 75

10 Quality
Yes Loyalty
Laura A.

They have some of the best subcontractors working for them. Everyone I dealt with was very honest and very easy to have around.

I like the quality of their work. They were thorough, and they really listened to what I ultimately wanted to have happen.

Verified Customer of Rockridge Builders, 11 of 75

10 Quality
Yes Loyalty
Bill G.

They're very professional, and they do quality work. They anticipate and identify potential problems before they occur.

Their workmanship is excellent.

Verified Customer of Rockridge Builders, 12 of 75

10 Quality
Yes Loyalty
Jose R.

They're really experienced in the construction field. They know what to do, and they know how to work with people.

I knew they would get the work done by the time I needed them to. They finished everything early, and the price never went up. They really worked for me.

Verified Customer of Rockridge Builders, 13 of 75

10 Quality
Yes Loyalty
Mike M.

I would say they follow through on any commitments. They're accommodating, responsive, reliable, and professional.

They fully stand behind the work that they do. If I was unsure about anything or needed an update during the job, the owner would help me out and answer my questions.

Verified Customer of Rockridge Builders, 14 of 75

10 Quality
Yes Loyalty
Chantal S.

I have recommended them to my friends in the past, and I'd recommend them again.

Diligent, competent, personable, and punctual

Verified Customer of Rockridge Builders, 15 of 75

10 Quality
Yes Loyalty
Jamie L.

They did a really good job. They did it correctly, and it turned out just fine.

Working with Bill was great. He came out, looked everything over, and really noted the scope of the job. It was more than we expected, but we wanted it done right and so did Bill.

Verified Customer of Rockridge Builders, 16 of 75

10 Quality
Yes Loyalty
Raleigh R.

They do quality work. If you hire them, you'll get a good value for your money.

I liked the people I dealt with. I wish I could remember their names, but I can't off the top of my head. They were fast, courteous, and they did quality work.

Verified Customer of Rockridge Builders, 17 of 75

10 Quality
Yes Loyalty
Shirley W.

I wouldn't recommend them if I didn't have a great relationship with them.

They always return my calls.

Verified Customer of Rockridge Builders, 18 of 75

10 Quality
Yes Loyalty
Clark T.

They are honest, reliable, and they do very high quality work.

Bill Hinkamp, the owner, is an exceptional person.

Verified Customer of Rockridge Builders, 19 of 75

10 Quality
Yes Loyalty
Charles F.

They're knowledgeable, trustworthy, and communicative.

I have confidence in their work.

Verified Customer of Rockridge Builders, 20 of 75

10 Quality
Yes Loyalty
Graham P.

I have already referred two friends to them.

Their expertise and reliability stood out for me.

Verified Customer of Rockridge Builders, 21 of 75

10 Quality
Yes Loyalty
Rich S.

I would simply say they'll get the job done.

The owner is honest. You don't encounter many honest contractors. They usually want to make their money and call it a day. Rockridge is the complete opposite. They take their time and make sure the quality is first priority. He's trustworthy and has a high level of integrity.

Verified Customer of Rockridge Builders, 22 of 75

10 Quality
Yes Loyalty
Steve U.

They're easy to work with.

They have very good input. They add value when it comes to making decisions. They're experts.

Verified Customer of Rockridge Builders, 23 of 75

10 Quality
Yes Loyalty
Don S.

They were great.

Nothing in particular

Verified Customer of Rockridge Builders, 24 of 75

10 Quality
Yes Loyalty
Tim R.

To use them

They know what they're doing. I thought they were informative and detailed.

Verified Customer of Rockridge Builders, 25 of 75

10 Quality
Yes Loyalty
Cathy B.

I liked the fact that they kept me informed and kept me posted on everything. They were consistently diligent about cleaning up. They hit all of their deadlines. We had another contractor about five years back and my experience with Rockridge was much better. I have nothing but good things to say about them.

Verified Customer of Rockridge Builders, 26 of 75

10 Quality
Yes Loyalty
Barry E.

We were very satisfied. They were professional, on time, and clean. I found their work to be very high quality.

Verified Customer of Rockridge Builders, 27 of 75

10 Quality
Yes Loyalty
Jennifer K.

Their professionalism, scheduling, and the quality of their work

Verified Customer of Rockridge Builders, 28 of 75

10 Quality
Yes Loyalty
Rhonda H.

We liked the quality of their work and how responsive and accommodating they were to our schedule. They were dependable too.

Verified Customer of Rockridge Builders, 29 of 75

10 Quality
Yes Loyalty
Shirley W.

I think what I like best is that they are easy to talk to.

Verified Customer of Rockridge Builders, 30 of 75

10 Quality
Yes Loyalty
Kate W.

The people, the staff, and the owner are all great. They are professional and they do high quality work. We have been using them for fifteen years.

Verified Customer of Rockridge Builders, 31 of 75

10 Quality
Yes Loyalty
Katinka W.

I thought they had very qualified people doing the work, no dummies. They understood what they were supposed to be doing. They were inventive and creative. They knew how to deal with problems.

Verified Customer of Rockridge Builders, 32 of 75

10 Quality
Yes Loyalty
Brian K.

I trust them. They are not the cheapest, but because they troubleshoot so well, they actually save me money. I don't have to spend time micromanaging them.

Verified Customer of Rockridge Builders, 33 of 75

10 Quality
Yes Loyalty
Mike M.

They were responsive and easy to work with.

Verified Customer of Rockridge Builders, 34 of 75

10 Quality
Yes Loyalty
Frankie R.

The quality of work done on time and workers

Verified Customer of Rockridge Builders, 35 of 75

10 Quality
Yes Loyalty
Adam C.

They finished the job before the deadline within budget.

Verified Customer of Rockridge Builders, 36 of 75

10 Quality
Yes Loyalty
Jack M.

I would say that I liked their attention to details and their understanding of the job at hand.

Verified Customer of Rockridge Builders, 37 of 75

10 Quality
Yes Loyalty
Barry E.

They have very high quality standards, and they are very nice to work with. I have been using them continuously for the last three years.

Verified Customer of Rockridge Builders, 38 of 75

10 Quality
Yes Loyalty
Tony G.

Friendly, professional, clean and did a great job

Verified Customer of Rockridge Builders, 39 of 75

10 Quality
Yes Loyalty
Carolyn D.

They were just very efficient, very knowledgeable, never had to worry about the quality of the work,

Verified Customer of Rockridge Builders, 40 of 75

10 Quality
Yes Loyalty
Albert D.

Personable, available, patient, fair and honest, I would definitely hire them again

Verified Customer of Rockridge Builders, 41 of 75

10 Quality
Yes Loyalty
Laurie R.

They seemed to be quite honest and didn't hesitate to answer any questions

Verified Customer of Rockridge Builders, 42 of 75

10 Quality
Yes Loyalty
Mary T.

The personal service and great attitudes

Verified Customer of Rockridge Builders, 43 of 75

10 Quality
Yes Loyalty
Kris M.

Level of professionalism was exemplary, I appreciated the rapid return of phone calls, communication was very open and unique between us, Bill and his crew went over and above the call of duty to make sure care and respect was exercised while tearing up my house

Verified Customer of Rockridge Builders, 44 of 75

10 Quality
Yes Loyalty
Bob H.

The professionalism and genuine sincerity in doing a good job

Verified Customer of Rockridge Builders, 45 of 75

10 Quality
Yes Loyalty
C.O.

I guess I would say that he makes me feel confident that he can get the job done. I feel like he's very trustworthy, very upfront, and he tries to see potential problems before they happen.

They're reliable. They were upfront about the price, they delivered on time, and delivered at the price he said. He has a high quality manner and the package was adhered to.

Verified Customer of Rockridge Builders, 46 of 75

9 Quality
Yes Loyalty
Carolyn S.

I've already recommended them to plenty of friends. I had a great experience working with them, and I thought they did a top-notch job.

Their price came in a lot lower than other companies I was originally looking at. They met all of my needs, they were responsive, and they were very cooperative throughout the entire thing.

Verified Customer of Rockridge Builders, 47 of 75

9 Quality
Yes Loyalty
Brad S.

They were very professional, super easy to work with, reliable, and they cleaned up every day.

Nothing in particular, they were always on time and responsive to us and our architects. They were the best contractor that we've ever worked with.

Verified Customer of Rockridge Builders, 48 of 75

9 Quality
Yes Loyalty
Jessica W.

I would have no problem recommending Rockridge Builders to one of my friends.

I like that the job was finished ahead of schedule, which is usually rare. They were efficient, punctual, and personable.

Verified Customer of Rockridge Builders, 49 of 75

9 Quality
Yes Loyalty
Rick S.

They are professional and very interactive when it comes to solving problems.

They took the time to work through a bunch of issues, which didn't seem to faze them. They gave me various alternatives, which I thought was wonderful. They really worked with me to find all of the answers.

Verified Customer of Rockridge Builders, 50 of 75

9 Quality
Yes Loyalty