About Us

Our team

America-One Realty is Arizona’s most reliable source for full-service property management and brokerage services. With many choices throughout Scottsdale and the East Valley for full-service property management, we take pride in our commitment to personal service, responsiveness, direct communication, and our experience and expertise in real estate. Each of our employees are seasoned real estate professionals who have a vested interest in your success. Our 40+ years of experience in the real estate industry benefits you by providing extremely high quality service and attention to detail. America-One Realty is a state-licensed brokerage so you can be assured you are getting trustworthy property management and brokerage services. We provide services for homeowners, investors, and lenders. Regardless of if you own a single property or dozens of properties, we can handle all of your property management and brokerage needs. Our services are available for Scottsdale, Phoenix, Fountain Hills, Cave Cree, Carefree, Paradise Valley, Tempe, Mesa, Chandler, and Gilbert.

Managing Partner

Joseph Pierce

Managing Partner

Mr. Pierce began his career at a large Phoenix based law firm specializing in complex business litigation, including securities litigation and accounting malpractice. He subsequently joined a private equity firm as Managing Director and General Counsel. In 2009, Mr Pierce began investing and managing in real estate in the Phoenix, Scottsdale, and the East Valley markets. His experience as a real estate owner, investor, property manager, and legal background bring a wealth of expertise to our company. He received his degree from Brigham Young University and his Juris Doctorate degree from Arizona State University. He is also fluent in Spanish.

Steven Nielsen

Managing Partner

Prior to joining America-One, Mr. Nielsen served at Managing Director and Chief Financial Officer for a private equity firm managing over $170 million in portfolio assets, including commercial, retail, and residential development. Mr. Nielsen has experience in financial modeling, budgeting, return analysis, due diligence, and acquisition and development risk analysis and financing. Mr. Nielsen is a licensed real estate agent and belongs to the National Association of Realtors. Mr. Nielsen is also an experienced as a real estate owner, investor, and property manager. Mr. Nielsen earned a B.S. in Accounting from the University of Utah.

Patrick Niederdrenk

REALTOR® + Managing partner

Patrick is a licensed Real Estate Agent and Managing Partner at America One Luxury Real Estate. Known for his hard and reliable work, Patrick is on his way to becoming one of the Top Producing Agents in the East Valley. Recently published, he was named one of Scottsdale/Phoenix rising stars. Rising Stars – Phoenix Voyage Magazine. Specializing in Luxury Real Estate and Investment Properties, for Buyers and Sellers alike, Patrick is knowledgeable and has an amazing team behind him including lawyers and accountants to make sure all your Real Estate needs and wishes are well-taken care off. Leading the America One Luxury Real Estate Group, Patrick and his Team are one of your best options in the East Valley.

Maximilian de Melo

Managing partner

Prior to joining America-One, Mr. de Melo was the Managing Director of a leading international industrial service provider. Mr. de Melo has experience in International Management and Sales working in Europe, South America and the United States. Mr. de Melo is responsible for the communication with Home Owners, Tenants, Home Owners Associations, and Sales. He is a Real Estate Investor himself and belongs to the founder and management team of MXP Real Estate Investment. Mr. de Melo earned a B.S. in International Business from the University of Cologne.

Designated Broker

Steven Nielsen Sr.

Is currently a licensed real estate broker in Arizona and Utah, as well as the designated broker for America One Luxury Real Estate in Arizona.  He began his real estate career in 1974 in Arizona before moving to Utah in 1975. In 1979, he earned his Utah broker’s license and in 2011 his Arizona Brokers license.  He has been actively involved in residential and commercial real estate, including shopping center development and management.

He is a member of the National Association of Realtors, Scottsdale Association of Realtors, Arizona Regional Multiple Listing Service, the Salt Lake Board of Realtors and the Wasatch Front Multiple Listing Service.

He earned his BS in Finance from Brigham Young University.


Steven Nielsen


Prior to joining America-One, Mr. Nielsen served as Managing Director and Chief Financial Officer for a private equity firm managing over $170 million in portfolio assets, including commercial, retail, and residential development. Mr. Nielsen has experience in financial modeling, budgeting, return analysis, due diligence, and acquisition and development risk analysis and financing. Mr. Nielsen is a licensed real estate agent and belongs to the National Association of Realtors. Mr. Nielsen is also an experienced as a real estate owner, investor, and property manager. Mr. Nielsen earned a B.S. in Accounting from the University of Utah.

Isaac Pena


Isaac Pena is an Arizona local from Prescot, Arizona. His experience managing a local construction concrete company and marketing expertise has allowed him to build a strong network within the East Valley Real Estate Community. He is a licensed realtor with AmericaOne Realty specialized in Due Diligence and Contract Negotiation in Residential Home market.

Ryan Neihar


Mr. Neihart is originally from Tucson with a fundamental background in the health and fitness world as a personal trainer for 5 years. Upon refocusing his passion for creating strong relationships with people he began to build professional partnerships as a Real Estate agent with his clients instead. After his first successful year of Real Estate in Tucson as a member of one of the largest teams, he made the life-changing decision to join America One Luxury Real Estate here in Scottsdale, AZ. Mr. Neihart specializes in residential homes, multifamily investment properties, fix-n-flips. He and his elite team, The East Valley Luxury Group share the common focus of providing the highest quality real estate service in all the east valley of Phoenix; helping clients make one of the most important investments of their lives in finding a home.


Here is what some of our clients had to say about our services:

“I have had the pleasure of knowing Mel Comstock of America One for over six years. During that time Mel has been key to my success investing in Phoenix area Real Estate. Mel has been my agent as a buyer and seller as well as our property manager. He has consistently exceeded my expectations with the level of service he has provided to me as a client no matter what my needs. Mel is a very honest man with a great wealth of knowledge in real estate and has always given me informed, direct, and unbiased guidance that has allowed me to make confident real estate decisions. I strongly recommend his services and counsel to anyone interested in Phoenix area real estate.” - Scott Smith, Mountain View, CA
“There are many other Real Estate and property management companies that exist, but not all of them are the same and not all of them are professionally managed, the difference can be night and day, especially if you are an out of state owner such as myself. This is the reason I have been working with America-One for the past three years. They managed three of my properties in Arizona, with America-One responsibility for the day in day out activities, it gives me the peace of mind that not only will problems be resolved quickly, but in a cost effective manner. In this economy it is very difficult being a property owner, but with a company like America-One by your side it gives you a competitive edge”. - Joe Hekimian, Mission Viejo, CA
“I have been both a client and later a friend of Mel Comstock for several years. As an investor in Real Estate for over two decades, I originally met Mel when I was in the middle of a devastating real estate experience. My managerial problems at that time included, collections, tenant communications, accounting issues, building maintenance, legal concerns, and cash flow problems. Not only did Mel successfully assist me in solving all of these issues, he did it with a sense of professionalism, combining an expertise in Real Estate Brokerage and management fields and an unwavering sense of ethics. I could not give a higher recommendation for him both as a broker or property manager and as a role model of professionalism”. - Mark Diamond, PHD, Temecula, CA
``My girlfriend and I moved to Fountain Hills from New Jersey over the Christmas/New Years holiday and needed to find a place for us to live on a short trip to the area in early December. The stress of packing our lives and driving across the county was weighing on us both and just when we thought we would be shacking up at an extended stay upon our arrival in Phoenix I stumbled upon the perfect rental house for us. The only thing luckier than the house was that it was managed by America One. From the moment I submitted my application and began corresponding with Steve Nielsen I knew we had kicked a goal. Steve made the entire process so easy and stress free I was calling the 2 bedroom house in a quiet corner of Fountain Hills home before we had moved a single box out of our apartment in New Jersey. Before I returned to NJ he had worked out every arrangement necessary so we would be able to pull right into our driveway on Jan. 1 and start our new lives in AZ. Throw in the amazing user friendly tenant portal on their website for managing the rent and maintenance and I can honestly say America-One is hands down the best property manager I have ever had the pleasure of dealing with.``- John McAuliffe, Fountain Hills, AZ
“America-One and Mel Comstock were recommended to us as a Property Management Company for our rental homes. We were not satisfied with our other management company and were not planning to renew our contract with them. Mr. Comstock met with us and we made the decision to employ his management services. He is very professional in how he handles his business and has many years experience. We appreciate that, since there is much of that lacking in many businesses today. We had a tenant that was not complying with his lease agreement and Mr. Comstock stepped in, contacted the tenant, and resolved the situation in a manner we approved and would want it handled if we were doing it ourselves”. - Dave Carder, Phoenix, AZ
“Living 1800 miles away it is important for us to know that the tenants are receiving the best of care and that our property will be well maintained. We had several management companies to evaluate and picked America- One because of several reasons. First, your contract is straight forward and easily understandable. Others want their commission and percentage of the proposed rent up front beginning the day you sign with their company, rather than from the day the rent begins. I am sure this is an incentive to you as your listing practices are most aggressive in obtaining a renter for the property. From the very first conversation with you I felt at ease. You continue to respond quickly to my questions, and being new at this, I have had many to ask. Your answers show your immense background and professional attitude. But the best reason to sign with America One is your integrity. The way you handle every situation said a lot to me. I am totally comfortable with you and your staff managing the property for us. When I handed you the keys, I knew both the renter and my property were in very good hands. You gave me the peace of mind to think about purchasing other properties knowing that you would be there to take care of everything. The whole experience for us continues to be proficient and fulfilling.”<br /> - Sal & Beth Lema, Palos Heights, Illinois