Custom Builder in Phoenix, AZ
ADUs, additions, guest houses, and more — designed, permitted, and built by one trusted team.
Serving Phoenix
Your Trusted Custom Builder in Phoenix
As Arizona's capital and largest city, Phoenix offers diverse neighborhoods — from historic districts near downtown to sprawling desert lots in North Phoenix. Whether you're adding an ADU in Arcadia or building a guest house in Desert Ridge, our team navigates Phoenix's zoning codes and HOA requirements to deliver your project on time and on budget.
With over 17+ years of experience and AZ ROC License #318269, Kelso Custom Builders brings design-build expertise to every project. We handle everything — from initial design and 3D renderings to permitting and final construction — so you get one team, one vision, and no surprises.
- State capital — largest metro in AZ
- Diverse zoning districts
- Strong ADU & addition demand
What We Build in Phoenix
Our Services
Every service includes full design, permitting, and construction — handled by one team from start to finish.
Why Local Expertise Matters in Phoenix
Every municipality in the Phoenix metro has its own zoning codes, setback requirements, and permitting processes. Building in Phoenix requires a contractor who understands the local landscape — from Maricopa County regulations to neighborhood-specific HOA guidelines.
At Kelso Custom Builders, we've built projects across Phoenix and the surrounding area for over 17+ years. Our familiarity with local building departments means faster approvals, fewer revisions, and a smoother experience from start to finish.
Every design we offer is guaranteed to be buildable. We don't waste your time or money on plans that won't pass inspection.
How It Works
Our Process
Free Consultation
We visit your Phoenix property, discuss your vision, and assess feasibility.
Custom Design
Our team creates detailed plans and 3D renderings tailored to your property and goals.
Permitting
We handle all Maricopa County permits and approvals — no paperwork headaches for you.
Construction
Mark oversees every phase on-site. Clear communication and no hidden costs until final walkthrough.
Client Testimonials
What Our Clients Say
"Great communication, great guy, gets job done in very very timely fashion."
"Very responsive and thorough. Patiently educates homeowner. Creative suggestions."
"Great guy, very easy to work with and understands what you are trying to accomplish."
Also Serving Nearby Communities
Get Your Free Estimate in Phoenix
Ready to start your project? Tell us what you're envisioning and we'll provide a detailed, no-obligation estimate.