We can make the difference

About Us


RealtySpan.com, Inc dba Data Derivation

Data Derivation is a DBA of RealtySpan.com, Inc. created to interact with the developers, vendors, and data suppliers for the solutions we offer. Our skill set started within the Real Estate space and extended to small businesses. However, the services we offer applies to most small businesses, and our design and implementation give you a professional site and an enterprise platform.

Data Derivation is a family-owned and Veteran small business. We understand the challenges of operating a small business and keeping your sanity. Our focus is to help owners like us with their technology needs.


What we do

Data Derivation is a technology resource for small businesses. Many companies offer software solutions to small businesses, but very few are there to help you with the day-to-day support after the sale. In many circumstances, a small shop is a company of one or an owner with a few helpers or employees. Most technology companies do not consider your business profitable for them because of your size. We believe this causes many small businesses not to embrace some standard technologies available today. The learning curve, time to implement, input data can overwhelm someone who would rather be doing the activity they know. We are here to fill that gap for those services and help you learn the software which will help you grow. We set up only the services you need, create your online presence, implement these services on your desktop, tablet, and mobile devices then walk you through the use of all the benefits.

We are all in for Small Business

From websites to email, we are here to help.

Managed by Us

From time to time better services are offered from different vendors we will make the changes without interrupting your services.

Maintained by Us

Most software are update as the technology develop. We maintain all update within our services.

Secured by Us

Today a device without security is vulnerable to every malicious virus, malware and ransomware. We maintain security and backups.

Supported by Us

Sometime the simple questions are the lease answered. We are here to support all services we manage.


Patrick Naraine


Direct: 845-688-4725

Mobile: 914-325-4714

After serving four years in the United States Air Force and honorably discharged in the fall of 1982. I immediately started in the real estate business with my dad, who owned and operated a small office in the Castle Hill section of the Bronx with about four agents. I quickly learned the trade and was quite successful over the years. I started in the technology business by necessity in 1984. We purchased a few fax machines for the company, which was considered cutting edge for small business at the time. I then inquired about computers from the same salesman who was happy to sell me all the computers I want even if I have no idea what to do with them. Fortunate for me, I had a burning desire to learn to program and apply this fantastic technology. The development of applications for our business back then gave us a tremendous advantage over our competitors, which we fully utilized. Being self-taught in this line of work has its advantages, but also has its setbacks. Learning, developing, maintaining, supporting, and keeping up with the advancement in technology is almost impossible for an expert. This situation is the dilemma I consistently found myself in while I was also financing my insanity. I eventually was able to hire some help and got some work done. Over the past year, we have been designing a solution that utilizes current technologies and adaptive to the changes coming. We can now apply this solution to your business and give you the ability to scale as you grow.

Lori Naraine


Direct: 931-771-8855

Mobile: 505-328-0240

I started in the real estate field as a data entry clerk for a New York State broker specializing in REO’s. I worked for five years, entering and learning the valuation process of residential properties. I subsequently decided to go to school for Medical billing and coding. Fifteen months later, I realize this is not for me. I did some minor work with my father-in-law Patrick Naraine, who was working on a Real Estate application. After a few months, he asks me to get more involved. Developing this program became my primary focus for the next three years. During the development process, I acquired my Real estate licenses to understand the practical side of the Real Estate business better. Actively selling and renting properties for about the same time as working on this application helped me in both areas, the development and identifying the tasks which can be addressed by technology. I have no formal training in software development, but I am a quick study. The practice of real estate helps me offer sound suggestions to the developers for the Tennessee market. Having worked on this application from the inception, I think I am uniquely qualified to help you with any of your support questions.

Serita Naraine


Direct: 845-688-4726

In 1997 I started work as a secretary in a real estate office in Bronx, NY. About a year later I was hired by Patrick, who in 1999 became my husband. For the year before being married to Patrick, I worked as his assistant in buying, selling, and processing mortgages for properties. As an assistant and then wife, I learned the financial aspect of running a multi-facets business, which changed as the technology advanced. We worked for years on his dream of completing the Real Estate application he started in the mid-eighties. Today, twenty years later and many years of experience, we are offering our services to small business owners just like us.

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