Luxury spec home in Paradise Valley, Arizona at golden hour
Paradise Valley  ·  Arizona

Residences of Enduring Distinction

Luxury real estate development.

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Kyrios Development

Κύριος  ·  kýrios  ·  “KEE-ree-os”

Kyrios derives from the ancient Greek Κύριος, the word for “Lord”. Kyrios reflects our governing philosophy: that every parcel of land, every residence, and every dollar of capital entrusted to us deserves the vigilance of a true steward and the standards of a master builder.

18+

Years in Real Estate

10+

Years Construction Mgmt.

$75M+

Luxury Assets Managed

$50M

Fund I Target

Luxury residence interior
Luxury residence exterior with pool courtyard
The Kyrios Method

Off Market Acquisition & Spec Home Build Process

Six stages, from first underwriting to final delivery.

I

Underwrite

We evaluate market analysis, acquisition costs, construction budgets, entitlement risk, projected returns, and exit strategies before committing capital.

II

Acquire

We identify exceptional homesites and redevelopment opportunities in Paradise Valley's most desirable locations.

III

Entitle

We navigate every approval, from zoning and engineering to permits, laying the foundation for a successful project.

IV

Design

Our team crafts architecture that balances timeless elegance, functionality, and enduring value.

V

Build

Meticulous craftsmanship, strict project management, and uncompromising quality guide every stage of construction.

VI

Deliver

Through strategic marketing and trusted industry relationships, we deliver each residence to its next owner while maximizing value.

For the Private Client

Luxury Renovation Process

Five stage process.

I

Assess

We begin with a comprehensive evaluation of the residence, understanding its architecture, existing conditions, opportunities, and the homeowner’s vision before defining the scope.

II

Design

We collaborate with architects, designers, and specialized consultants to develop a cohesive vision that respects the home while elevating its functionality, character, and long-term value.

III

Plan

We define the project scope, budget, schedule, procurement strategy, and permitting requirements, ensuring every detail is thoughtfully coordinated before construction begins.

IV

Build

Our team manages every detail of construction with meticulous oversight, exceptional craftsmanship, and an uncompromising standard of quality from start to finish.

V

Deliver

We oversee final detailing, inspections, commissioning, and turnover to ensure every element of the residence is complete, refined, and ready to be enjoyed.

Twilight over a luxury Paradise Valley estate
Begin the Conversation

Your Estate Awaits

Whether acquiring, building, or reimagining a residence in Paradise Valley, we welcome a private conversation.

Contact Kyrios Development
About Kyrios

Mastery by Design

Our name defines our standard.

Kyrios Development is a private real estate development company strategically structured under Regulation D, Rule 506(c). Our platform pursues distinctive residential projects that harmonize architectural heritage with modern market dynamics.

Beyond the homes we develop, we believe meaningful development carries a responsibility to the communities it touches. As Kyrios grows nationally, charitable stewardship will remain central to our purpose, building a legacy defined not only by the places we create, but by the communities we strengthen.

“For every house is built by someone, but the builder of all things is God.”

Hebrews 3:4

The Principal

A Career Built on Both Sides of the Ledger

Joseph Marinis is the Founder & CEO and sole principal of Kyrios Development LLC, founded in 2025 in Paradise Valley, Arizona. He brings 18 years of real estate brokerage experience, with a background at Keller Williams. As a licensed Realtor, Joseph is able to perform brokerage duties and retain transaction fees in-house, enhancing operational efficiency and investor returns.

Joseph holds real estate licenses in Illinois, Arizona, and California, and brings over 10 years of construction project management experience from a prominent Chicago-based masonry company, including two years of direct field labor to earn his position managing large-scale construction projects. His deep understanding of both the physical and financial aspects of development provides a unique operational edge.

He has overseen more than $5 million in a multi-single-family home portfolio under El General Property Management and, from Q3 2024 through Q4 2025, has managed over $75 million in luxury assets in Paradise Valley, Arizona for Zacher Brothers Investments, LLC.

Mr. Marinis began his academic journey in 2008 at the College of Lake County, pursuing an Associate Degree in Accounting while managing construction projects for Brown Masonry. After relocating to Arizona, he earned his bachelor’s degree in Accounting with a minor in Business Management from Grand Canyon University. He has since completed the NAIOP Certificate of Advanced Study in Real Estate Finance and the Certificate of Advanced Study in Commercial Real Estate Development, covering advanced finance, development underwriting, and real estate capital markets.

The Team

An Alliance of Masters

Kyrios is fortified by a hand-selected circle of partners, each a leader in their industry.

Partner · General Contractor · Architecture

Rich Brock & Matt Brock

BedBrock Developers

Real Estate Broker

Frank DiMaggio

Owner, The Agency

Realtor

Ryan Puddy

RETSY

Real Estate Attorney

Luke J. Keller

Luke J Keller Law

Civil Engineer

Peter Hemingway

Ardurra

Mortgage Broker

Kevin Brumit

Homeowners Financial Group

Projects

The Portfolio

Residences of enduring distinction, in Paradise Valley’s most coveted enclaves.

Coming Soon

Mummy View Estates

Our inaugural offering: an exceptional estate setting at the base of Mummy Mountain in Paradise Valley, Arizona. Full details will be unveiled soon.

Aerial view of Mummy View Estates site in Paradise Valley
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Investors

For Our Investors

Transparency, stewardship, and institutional-grade reporting.

Investor Portal & Login

A private portal for Kyrios investors, featuring project performance, capital account statements, distributions, and document access, is currently in development.

Coming Soon

To be notified at launch, or to invest with us, please contact our office.

Market Analysis

Market Intelligence

Data-driven conviction in Paradise Valley and the greater Scottsdale corridor.

Gathering Market Data

Our research desk is assembling a comprehensive market analysis showcase covering luxury sales velocity, price-per-square-foot trends, land values, and new construction absorption across Paradise Valley’s premier corridors.

Coming Soon
Regulation D · Rule 506(c)

The Fund

Institutional rigor. Private-client exclusivity.

Announcing

Kyrios Development Fund I

$50,000,000

A Regulation D 506(c) offering dedicated to Land, development, and luxury residences in Paradise Valley, Arizona.

More Information Coming Soon

For accredited investors only. This page does not constitute an offer to sell or a solicitation of an offer to buy securities. Any such offer will be made solely through official offering documents.

Contact

Begin the Conversation

Private inquiries are welcomed and held in strict confidence.

The Office

Kyrios Development LLC

PrincipalJoseph Marinis, Founder & CEO
Address7150 E Camelback Rd, Suite 444
Scottsdale, AZ 85251
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7150 E Camelback Rd, Suite 444 · Scottsdale, Arizona