01Plan
Site visit, measurements, drawings and a scope in plain English. You approve the plan before anything gets ordered.
Scope signed offOwner-operated · Peoria, AZ
The builder you can actually reach
Kelso Custom Builders is a family-run general contractor in Peoria, Arizona. Mark Kelso runs every job himself, from the first walkthrough to the day you get your keys back.
ROC #318269 ROC #243160 Financing available Free consultation
Built for ArizonaLicensed AZ ROC #318269 / #243160Local, family-run in PeoriaFinancing availableFree in-person consultation
Finished work, not promises
Who we are
Small company. Serious work.
A lot of contractors grow until the owner becomes a stranger to the job site. We went the other way on purpose. Kelso Custom Builders stays small enough that Mark personally prices, plans and runs every project, and picky enough that the work holds up under Arizona sun, monsoon rain and real family life.
That means fewer jobs at a time, straight answers when something changes, and a clean site every evening. It also means when you call, the builder answers. Not a call center.
- One owner, one point of contact, zero runaround
- Licensed, bonded and insured in Arizona
- Remodels, additions, ADUs and custom homes
- Free in-person consultations, straight pricing talk
How we work
Walk our workbench
Tap the pins. Five habits that follow us onto every job site.
1Planning first
Every job starts on paper. Measurements, drawings and a scope you can read, so the price means something.
2The right tools
We bring trade-grade tools and the people who know how to use them. No learning on your dime.
3Measure twice
Layout gets checked before anything is cut, poured or nailed. Fixing it on paper is free. Fixing it in drywall is not.
4Clean site, every day
Tools go back on the rack and the site gets swept. A tidy job is usually a careful one.
5Built to be inspected
We build like the inspector is coming tomorrow, because in Arizona, they are.
Our process
Plan. Frame. Finish.
Three phases, each with its own checkpoint. You always know where the job stands.
01
02Frame
Demo, structure, rough trades. The unglamorous work that decides whether the finish lasts. Inspected at every required stage.
Passes inspection
03Finish
Surfaces, fixtures, paint and punch list. We walk the job with you and we are not done until the list is.
Punch list cleared
Licensed, bonded, insuredCheck us out
Verify our licenses in under a minute
Anyone can say they are licensed. We would rather you check. Copy either number and look it up on the Arizona Registrar of Contractors search. While you are there, check any other contractor you are talking to.
AZ ROC #318269Arizona Registrar of Contractors
AZ ROC #243160Arizona Registrar of Contractors
Licensed, bonded and insured. Financing available through our financing partner, and every project starts with a free in-person consultation.
Built for monsoon season, not just the brochure photo
Arizona homes live through 110 degree summers, dust storms and sideways rain. We detail roofs, flashing and drainage for the desert we actually live in.
Where we build
Proudly based in Peoria
Headquartered on the west side, building across the Valley and up north.
Contact
Talk to the owner, today
No gatekeepers. Call, text or email and you are talking to the person who will build your project.
Shop & office7613 W Surrey Ave, Peoria, AZ 85381
Call or text Mark(602) 361-2310
Email[email protected]
HoursMon to Sat, 7am to 6pm
Peoria, ArizonaFAQ
About us, in plain answers
Who will actually run my project?＋
Mark Kelso. Kelso Custom Builders is owner-operated, so the person who walks your consultation is the person who manages your job. You get one point of contact from the first visit to the final walkthrough.
Are you licensed and insured?＋
Yes. Kelso Custom Builders, Inc. holds Arizona ROC licenses #318269 and #243160, and the company is licensed, bonded and insured. You can verify both numbers on the Arizona Registrar of Contractors site in about a minute.
What kinds of projects do you take on?＋
Four things, done well: major remodels, home additions, ADUs and guest homes, and ground-up custom homes. If your project does not fit one of those, we will say so and point you to someone who fits better.
Where do you work?＋
We are based in Peoria and build across the Valley: Glendale, Phoenix, Paradise Valley, Scottsdale and Fountain Hills, plus select projects in Northern Arizona.
Do you offer financing?＋
Yes, financing is available. Ask about it during your consultation and we will walk you through the options.
What does the free consultation include?＋
Mark comes to your home, walks the space with you, talks through what you want, flags any structural or permit realities, and gives you a straight read on scope and budget. No pressure and no obligation.
Ready to talk about your project?
Book a free in-person consultation. Mark walks the space with you, talks through options, and gives you a straight answer on scope and budget.