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Our History

Serving the residents of Long Island, NY for more than four decades

Founded in 1975, CENTURY 21 AA Realty is known throughout the Long Island area for their commitment to treating homebuyers and sellers with honesty and integrity. With offices in Nassau and Suffolk, they deliver superior real estate services to Long Island and Queens. Their world-class agents, outstanding sales and administrative team, and extensive corporate support, have fueled their growth and solidified their reputation as the area’s premier real estate company.

Strong leadership and a keen focus on teamwork and communication have merited CENTURY 21 AA Realty national recognition for excellence. CENTURY 21 AA Realty has consistently scored an overall 99% approval rating for customer satisfaction, performance and recommendations. Their high rating is supported by the tremendous amount of repeat business and referrals from satisfied buyers and sellers. CENTURY 21 AA Realty has been awarded the coveted Art Bartlett 2100 Cup, presented to only one of more than 3,000 CENTURY 21® franchises each year for attaining the highest level of leadership, customer service, and professionalism. Centruy 21 AA is also one of only 34 offices nationwide to be inducted into the CENTURY 21® International Hall of Fame.

CENTURY 21 AA Realty offices are populated with sales agents who share a common commitment to customer service and satisfaction. They are a diverse group of individuals unified by a consistent concern for customers, a sense of professionalism, and a desire to be involved in work that is meaningful and satisfying. We seek like-minded professionals to join our team.

About Vincent and Frank Dell’Accio

Owners and brothers, Vincent and Frank Dell’Accio understand that their agent's success means company success. Their commitment to excellence means that CENTURY 21 AA Realty agents receive the comprehensive business and technical support necessary to open, grow, and manage their careers. Backed by a dedicated office staff trained in processing, mortgage and technology, agents are equipped with the business tools and support necessary for success.

The commitment to the highest standards sets the tone for the entire company. The owners inspire the company with a caring and understanding approach, helping each agent achieve his or her goals. They do not compete with their agents for listings or sales, but instead spend their time developing innovations to keep the company in the forefront of the real estate services profession.


Both Nassau and Suffolk County CENTURY 21 AA Realty offices have earned and retained CENTURION® status since 1986. The company also has earned top designation on a national scale with Double CENTURION®, The President’s Award, the Ambassador's Award, Inductee into the CENTURY 21® International Hall of Fame and most important, The Quality Service Award for 26 consecutive years.

Art Bartlett 2100 Cup Award is the most coveted company award in the CENTURY 21® System. This award is presented annually to only one company that demonstrates the highest level of leadership, customer service and professionalism. A company that achieves this level of recognition represents the best the system has to offer.

CENTURION® - Winners of the CENTURION® Award represent the top two percent of the more than 3,000 real estate offices and 55,000 agents throughout the CENTURY 21® International network of independently owned and operated offices.

Double CENTURION® honors fewer than the top 1% of all companies in the worldwide CENTURY 21® organization.

The President’s Award is bestowed annually upon those CENTURY 21® System offices that earn the CENTURY 21® CENTURION® Award and the Pinnacle Quality Service Award for two consecutive years.

The Quality Service Award is awarded to CENTURY 21® offices that achieve a 95% satisfaction rate.

CENTURY 21 AA Realty Core Values:

  • Integrity and the highest ethical standards
  • Mutual respect and trust in our working relationship
  • Innovation and encouragement to change the status quo
  • Communication that is open and consistent
  • Teamwork and meeting our commitment to one another
  • Performance with recognition for results

Standards of Performance

Our Code of Ethics and Business Conduct is more than an expression of our commitment to integrity, stability and compatibility. It represents the guiding values of our organization, and helps to instill ethically sound behavior and accountability among all CENTURY 21 AA Realty agents. We diligently educate our agents about our standards and provide opportunities to ask questions or report concerns. Every agent, including owners Frank and Vincent Dell’Accio, certifies compliance with our standards annually. We hold one another accountable because we understand that our reputation is fundamental to our success and that success is built upon the notion of treating people the way you want to be treated.

CENTURY 21 AA Realty subscribes to the NATIONAL ASSOCIATION OF REALTORS® Code of Ethics and Standards of Practice.

Agent Testimonials

Christina Roach | Seaford Office

"The successes I have achieved after only a few months in the real estate business can be attributed to my training at CENTURY 21 AA Realty. The guidance, leadership and tools given to me through their training and mentorship program have made – and continues to make – all the difference."

Bob Meade | Lindenhurst Office

The # 1 reason I have had the great fortune of having an incredibly enjoyable and profitable career in real estate is solely because of the friendship, support and unending encouragement from both Frank and Vincent Dell'Accio. They genuinely care about each and every one of their team members. Whether they are providing me with the latest tools of the trade, an extensive training program to learn and sharpen my skills or making themselves accessible, as what seems to be 24 hours a day, they are always there for me. Their knowledge, experience, honesty and commitment to being the very best in the real estate Industry is second to none. I consider myself extremely fortunate to be a part of something that goes way beyond simply selling and listing houses.

Liz Gugliemo | Lindenhurst Office

"I have been a part of the CENTURY 21 AA Realty team for many years. I have been able to build a successful career and also be an active part of my children's lives. I have the flexibility to work from home and arrange my schedule to attend various school activities and sporting events. CENTURY 21 AA Realty offers excellent training on a flexible schedule and offers wonderful career opportunities."

Bonnie Miranda | Lindenhurst Office

"I have been working for CENTURY 21 AA Realty since 1986, and you don’t stay somewhere that long if you’re not happy. Reputable and well respected in the industry, AA has been a number-one company for many years. We are all like family. They run a great company and strive to make everyone the best they can be."

Barry Levane | Lindenhurst Office

As an agent with CENTURY 21 AA Realty, I’ve been provided with many extraordinary tools and unique advantages that most other agencies do not or cannot offer. One of these outstanding features is our relocation department. Being able to help people relocate nationally and globally is a valuable service. The very capable relocation staff takes care of all of the paperwork and follow-ups allowing me to concentrate on servicing the Client. This department also handles incoming referrals, an invaluable source of leads.

Tom Miller | Seaford Office

“Without the help and assistance from our support staff, I would not have the time or ability to service my clients and customers as effectively as I have, and it would most assuredly affect the growth of my business and my income. We are fortunate to have these dedicated professionals working with us.”

Laurie Hoschke | Lindenhurst Office

"One of the reasons that I began my real estate career at CENTURY 21 AA Realty was the support that I received from the staff. I was immediately welcomed and made to feel part of the team. Their experience, attitude and training has greatly increased my ability to build a successful career in real estate. The environment and professionalism has allowed me to have a fantastic work lifestyle and assisted me in realizing my career goals and ambitions."