Sixteen years ago, we set out to prove that facility maintenance could be done differently — with accountability, transparency, and the kind of follow-through that actually takes the burden off our clients. Diamond Certified has helped us hold ourselves to that standard every single year since. And we don’t plan on stopping.
Earning Diamond Certified isn’t a one-time achievement. It’s an ongoing commitment that we re-earn year after year through the work we do for every client, in every facility, across every county we serve. This post is about what that commitment looks like in practice, and why it matters to us and the businesses we partner with.
Key Takeaways
- Cappstone has held Diamond Certified status uninterrupted since January 2011 — 16 consecutive years.
- Our 4.4-star rating comes from 313 independent, verified customer phone surveys — not self-reported reviews.
- Diamond Certified requires annual credential verification: insurance, workers’ comp, license, and complaint history.
- We’re a certified Bay Area Green Business, using Green Seal-certified products as our standard practice.
- Every client is assigned a dedicated account manager focused on long-term partnership and facility-specific needs.
What Diamond Certified Actually Is
Diamond Certified isn’t a self-reported badge or a directory listing you pay to appear in. It’s earned through independent phone surveys of real, verified customers conducted by the American Ratings Corporation and continuously re-evaluated. To maintain it, companies must also pass annual credential checks covering liability insurance, workers’ compensation, license verification, business practices, and complaint history.
We’ve held Diamond Certified status uninterrupted since January 2011. That’s 16 consecutive years. Across 313 verified customer surveys, we carry a 4.4-star rating. That number matters to us because it comes directly from the clients we serve, not from us.
Our Clients Say It Better Than We Can
We’re proud of our rating, but the words behind it tell the real story. Here’s what verified customers have shared in their Diamond Certified surveys:
I would recommend them. I’m very satisfied with the work they’ve done. As far as I’m concerned, they’re an 11 out of 10. – Verified Diamond Certified Customer Survey
They’re very reliable and they do what they say they’re going to do. They follow through and make my life easy. They have a good team of detail-oriented employees.— Verified Diamond Certified Customer Survey
That second quote says everything. “They make my life easy.” That’s exactly what we’re here to do. Managing a commercial facility is demanding — we want our clients to hand that weight to us and trust it’s handled.
Partnership Is the Word We Keep Coming Back To
Our owner and Principal Nick Mettler has guided Cappstone with one consistent belief: the client relationship has to be a true partnership — not vendor and customer, not contract and compliance. A real, working partnership built on shared goals and honest communication.
We take away our customers’ headaches when it comes to managing their facilities. We look at each client relationship as a true partnership, and that has been the key to our success. We have a system that has worked for 30-plus years.— Nick Mettler, Owner & Principal, Cappstone, Inc.
Every client we work with is assigned a dedicated account manager — someone who learns your facility, anticipates your needs, and stays reachable. Not a call center. A person who knows your name and your building.
Green Cleaning Is Our Standard, Not an Upgrade
We’re a certified Bay Area Green Business. That means environmentally responsible cleaning methods and products — including those certified by Green Seal — are built into how we operate by default. For clients with sustainability goals, occupant health priorities, or LEED-sensitive environments, we’re already there. No special request needed.
What We Do
We provide managed facility maintenance for all types of commercial facilities throughout the Bay Area, including:
- Janitorial Services
- Green Cleaning
- Office Cleaning
- Bathroom Cleaning
- Kitchen Cleaning
- Window Cleaning
- Building Maintenance
- Trash Removal
- Electrostatic Disinfecting
- Carpet Cleaning
Our Team Is Growing — and Getting Stronger
We recently promoted Rudy Aguilar, Paloma Martinez, and Salvador Menjivar to Vice Presidents — a reflection of the depth we’ve built internally over the years. Our executive team collectively brings more than 50 years of combined experience, with CEO Cori Chipman, COO Michael Henriques, and President Charles Gough steering both day-to-day operations and long-term strategy.
We also recently unveiled a fresh brand identity — a new logo and a slogan that captures where we’re headed: “Unlimited potential. Endless possibilities.” In November 2024, we attended the ISSA North America Trade Show in Las Vegas, staying current on the latest innovations in cleaning and facility maintenance. We’re not standing still.
Sixteen Years Is a Number We’re Proud Of — and Motivated By
Diamond Certified isn’t something we earned once and put on a shelf. It’s a commitment we renew every year, through every job, with every client. It keeps us accountable to the standard we set for ourselves in 2011, and to the standard our clients deserve.
If you’re looking for a facility maintenance partner in the Bay Area, we’d love to connect. Read what our clients have said, explore our full capabilities, and reach out. We’re ready when you are.
