Diakonos means “in service to others.” It’s not a slogan - it’s our standard.
Reliable building maintenance & janitorial services in Knoxville, TN
No excuses, no surprises - just spotless facilities and a team you can actually count on.
Locally owned & operated
A true Knoxville company that knows the area and cares about our reputation here.
Direct access, no runaround
Real people answer the phone - issues get fixed fast, not passed around.
Rock-solid reliability
On time, fully staffed, and ready to work - no last-minute cancellations or excuses.
Commercial-grade everything
Professional tools, proven processes, and results that actually last longer.
A letter from Luke Duncan, Founder & CEO
Dear Friends,
Today, I’m thrilled to announce something that has been in the works for several months. Diakonos Building Maintenance is now open and serving the greater Knoxville area by providing commercial cleaning services, specialty floor care, and special projects.
As many of you know, I grew up in the facility maintenance industry, working alongside my dad. I saw firsthand the challenges that churches, schools, and organizations face in keeping their spaces clean and well-maintained. With a team bringing multiple decades of experience, we’re ready to serve this community with excellence.
Our name, Diakonos, means “servant” and servants are exactly what we aim to be. Our team is committed to providing reliable, consistent, and thoughtful cleaning services that make your facility one less thing to worry about.
We are now actively serving businesses and organizations throughout Knoxville and the surrounding areas. If you know someone who could benefit from our services, we would be grateful to you for sharing our name.
We offer free quotes on all services and would love the opportunity to meet you, learn about your facility, and show you what it looks like to partner with our maintenance team.
Thank you for welcoming us into this incredible community. We look forward to serving you - and the amazing businesses, churches, schools, and organizations that make the Knoxville area what it is.
P.S. Even if you don’t currently need our services, I’d still love to connect - whether it’s a quick phone call or grabbing a cup of coffee together. I’d be glad to share more about what we’re doing and how we might be able to help.
Here to serve,
Luke Duncan, Founder & CEO
Diakonos Building Maintenance
You shouldn’t have to think about cleaning (but you do)
Most facility managers in Knoxville are stuck dealing with the same frustrations - day after day.
No-shows when you need them most
Your current crew skips days, cuts corners, or simply doesn’t show up - especially on weekends or before big events.
Radio silence after you report a problem
Issues get reported, then ignored - phone tags, empty promises, and zero follow-through.
“Clean” that doesn’t actually feel clean
The building never truly feels fresh or cared for; it’s just “good enough” until the next complaint rolls in.
Wasting your time managing their team
You’re spending hours every week chasing vendors instead of running your actual business, school, or ministry.
We don’t just clean - we give you a facility you’re proud to walk into every day
Here’s exactly how we deliver the reliability and quality other companies only promise.
We show up every time, no excuses
Your schedule is locked in. Our crew is there, fully staffed and on time - every shift, every week.
Same reliable team you know and trust
No revolving door of strangers. Familiar, background-checked faces who know your building inside and out.
Issues fixed fast - usually same day
One call or text to a real Knoxville number and we’re on it. No tickets, no runaround.
Spotless results you can actually see
Detailed checklists, before-and-after photos when needed, and regular supervisor walk-throughs guarantee nothing gets missed.
Clear communication at every step
Daily logs, direct manager access, and proactive updates so you’re never left wondering.
Commercial-grade tools and products
We invest in the equipment and solutions most companies skip - because better tools mean cleaner, longer-lasting results.
Transparent pricing, zero surprises
Custom plan, upfront costs, no hidden fees or last-minute add-ons.
We treat your facility like it’s ours
Ownership mindset from top to bottom: we protect your investment, respect your people, and earn your trust one day at a time.
Reliable services tailored to your Knoxville facility
Every plan is custom-built around your building, your schedule, and your priorities - no one-size-fits-all packages here.
Who we serve
Tailored building care for every type of Knoxville facility
What people are saying
See our reviews & testimonials
Diakonos cleaned a construction cleanup for my business. The team did an incredibly detailed job that was reflective of the quote and accurate to what they said they could do. Can’t recommend them highly enough and will definitely be calling them again!
Very friendly receptionist!
I’ve known Luke for many years. He is a man of integrity and an exceptional Christian businessman. He will get the job done for you and do it well! Don’t hesitate to have him quote your job. He’s got a great team and is truly gifted in the area of service.
I’ve been a customer of Luke’s for many years, and he has always operated with fairness and integrity. He’s attentive to customer needs and consistently follows up quickly whenever questions or concerns arise. A dependable and trustworthy professional - highly recommend his janitorial services.
Luke Duncan is building an incredible janitorial business here in Knoxville. He's been in the industry for over a decade, he cares about people and treating folks right, and he's as honest as they come. I highly recommend Diakonos for all your janitorial and building maintenance needs.
How it works
A simple, no-stress process that gets you better results - fast
Quick walkthrough & honest proposal
We come to your facility, listen to your challenges, and give you a clear, detailed plan with transparent pricing—no surprises.
Custom plan built just for you
We design the exact scope, schedule, and frequency that fits your building, your budget, and your priorities.
Service starts and stays consistent
Our trained, background-checked team shows up on day one (and every day after) with detailed checklists and direct supervisor oversight.
Ongoing partnership & peace of mind
Regular quality checks, open communication, and fast fixes mean your facility keeps getting better—and you barely have to think about it.
Ready for a facility that always feels clean, safe, and taken care of?
Reliable janitorial and building maintenance from a local Knoxville team you’ll actually enjoy working with. Schedule your free walkthrough and custom quote - takes about 30 minutes, zero pressure.
