NM Commercial Staff

Todd Hetherington

Todd Hetherington, CEO, NM Management

Todd Hetherington is the Chief Executive Officer of NM Management, Inc., the parent company of all of NM's real estate service companies including CENTURY 21 New Millennium, 1st County Mortgage, Bay County Title and Escrow, Proactive Property Management, and NM Insurance.

Hetherington began his real estate career in 1988 as an agent and earned the NVAR Life Member, Top Producer and NVAR Life Member, Million Dollar Sales Club awards and has owned his own real estate company since 1991. In 1998, he merged his company with another local CENTURY 21 broker forming CENTURY 21 New Millennium.

Hetherington earned his Bachelor of Science degree from the United States Military Academy, West Point, NY and his Master of Engineering Administration from The George Washington University, Washington, DC. Hetherington resides in Fairfax County, VA where he and his wife keep busy juggling their three children's busy school, scouts, and sports schedules.

Mary Lynn Stone

Mary Lynn Stone, President, NM Management

Mary Lynn Stone is the President of NM Management, Inc., the parent company of all of NM's real estate service companies including CENTURY 21 New Millennium, 1st County Mortgage, Bay County Title and Escrow, Proactive Property Management, and NM Insurance. Stone has direct responsibility for overseeing the operation of twelve CENTURY 21 New Millennium real estate offices throughout VA and MD. A 30 year veteran of the real estate industry, Stone owned and operated her own real estate company in Maryland from 1992 to 1999, when she merged her company with CENTURY 21 New Millennium. Stone serves as a Member at Large with the Tri-County Council of Southern Maryland. She has also been a member of the Economic Planning Growth and Protection Committee for the State of Maryland. Stone holds a Bachelor of Science degree in Business Management and Marketing from the University of Maryland. Stone resides in St. Mary's County, MD with her husband, Joe, and their two children.



Art Carson

Art Carson, Director, NM Commercial - Maryland

Art Carson is Director of NM Commercial Real Estate where he oversees the daily business and marketing activity of the company, with all commercial affiliations reporting directly to him.

Known as a “people person,” Art began his exceptional career in 1968, as a Professional Golfer in the Southern Maryland area, and in 1970, he was unanimously elected Vice President of the Northern Chapter of the Middle Atlantic Professional Golfers Association.

In 1982, Art entered management as Director of Sweetwater Country Club in Houston, Texas, where he also served as liaison for the LPGA of America, whose home base remains at Sweetwater.

In 1987, Art joined First Annapolis Savings Bank as Vice President of Commercial Lending for Southern Maryland, a position that allowed him to develop a vast network of commercial business connections in the area. Then, in 1992, Art began his commercial real estate career, working with national brokers and franchise representatives while continuing to maintain strong relationships with Middle Atlantic region brokers. Through this position, Art has serviced large corporations for site location and small business owners for lease negotiation and site identification.

Currently, Art is a member of the Solomons Business Association and the International Council of Shopping Centers. He also maintains a life membership with the Professional Golfers Association. On a personal level, Art enjoys traveling with his wife, Anne, on global humanitarian missions, their latest venture of which was to Cuba.

E-mail Art

Cell phone : 410-610-2676

Office phone: 301-737-5151


Usman Amir

Usman Amir, Commercial Designee - Maryland

For more then 20 years, Usman Amir has been consummate leader with in-great knowledge of all aspects of commercial, Industrial properties, business brokerage and residential real estate, including commercial tenant representation, buyer/seller representation. Mr. Amir has represented, Buyers, sellers, investors, business owners and residential developer throughout his real estate tenure.

Usman Amir began his real estate career as an agent selling residential real and commercial estate in 2003. Mr. Amir has successfully built, owned and managed multiple condominium office projects, Mobile Home Park, Gas Stations, Sub Shops, Shopping Center and hospitality and restaurants. He also handles the leasing of strip shopping centers and warehouse condominiums.

Usman Amir holds a Bachelor in Hotels and Restaurant Business management from the University of Maryland. Mr. Amir also speaks Spanish, Farsi, Dari, Pashtu, and Urdu

Mr. Amir, resides in Ellicott City Maryland

E-mail Usman

Cell phone : 443-864-7484

Office phone: 410-730-8888


Ray Curtis

Ray Curtis, Commercial Designee - Maryland

Ray has been working in Commercial Real Estate for over ten years. He is a full time REALTOR specializing in the Tri-County area as well as Southern Prince George’s County.

Ray’s main focus is in the sale and leasing of Flex warehouses and office spaces in addition to land sales. He proves extensive knowledge and expertise in sales and customer service, as before coming into real estate, Ray managed his family business, Curtis Propeller, for over 30 years.

Honesty and Integrity are the pillars to his success. Ray has been a consistent Multi-Million Dollar Producer throughout his real estate career and is the recipient of a multitude of awards and accreditations from the Industry. His clients range from Medical Professionals to Manufacturing Facilitators.

“I am thrilled to be a part of NM Commercial,” said Curtis, “Backed by their advanced tools, systems, and support, I can continue to provide superior service and market knowledge to those needing commercial real estate services.” Since becoming affiliated with NM Commercial, Ray has begun the process of also obtaining his Virginia real estate license to expand his coverage area to be able to better serve his clients and customers.

E-mail Ray

Cell phone :301-807-3185

Office phone: 301-609-9550


Anne Cullins DavisAnne Cullins Davis, Commercial Designee - Maryland

To be successful in real estate, you must always put your clients first, Anne believes. For nearly a decade as a professional realtor, she has continually demonstrated this philosophy, and as a result, has earned a stellar track record and loyal following.

A lifelong resident of Southern Maryland, Anne assists small and large business clients in the sale, lease, or acquisition of commercial real estate across Southern Maryland, fulfilling all their retail, office, industrial and investment needs. She is highly dedicated to her work, attentive to their needs, and knowledgeable of the market. She's great at exposing people to the "inside scoop" on living and operating a business here, while educating them on the exact process of buying or selling so they are fully prepared and confident.

Knowing every square inch of her hometown territory makes Anne an invaluable resource whether you're new to or established in the area. "I love living in Southern Maryland and want all my commercial customers to feel that this is their 'home' also," she says. "I am very responsive and committed, and when you become my client, I always work with your best interests top of mind."

Anne's seasoned sales skills, keen eye for detail and strong sense of marketing and negotiating were honed in her previous positions in the service industry and in business development. Real estate was a natural transition and passionate pursuit for her, one which has been extremely rewarding. Personally, Anne loves living on the water, spending time with her family, golfing, and staying fit with CrossFit, running and triathlons.

E-mail Anne

Cell phone : 240-925-4477

Office phone: 301-737-5111


Mira NealeMyra Neale, Commercial Designee - Maryland

COMPETENT - a much desired ability, knowledge or skill that a client seeks in a Broker---'being competent' is the quality service Myra provides to her clients. Myra excels in the outstanding customer service she provides her customers and clients. 

Myra is a longtime resident of Southern Prince George's County Maryland. Myra began her real estate career as a Residential Realtor. She is certified through the National Association of Realtors as a Military Relocation Professional. Myra is a Certified Commercial Investment Member (CCIM) Candidate. She is a Residential Realtor and Commercial Broker licensed in Maryland and the District of Columbia.

Myra retired from the District of Columbia Government after 34 years of stellar service. She is a native of Southern Prince George's County Maryland. Myra is actively involved in community activities in Maryland and the District of Columbia. She is an Army Mom who is actively involved in military related activities. 

E-mail Myra

Cell phone : 240-416-6832

Office phone: 301-609-9550

Ken HenningsKen Hennings, Commercial Designee - Maryland

Ken Hennings has retired after over thirty-eight years with the Department of Agriculture, working in the credit/finance/appraisal fields of agriculture, residential, and commercial sectors. He has strong experience in commercial real estate which includes working with buyers and sellers from initial contact to settlement. His last position was supervision of the National USDA, resolving loan and grant programs for rural businesses at the D. C. national office.

Ken has lived in Huntington the last twenty-five years and thus, has a solid understanding of the commercial real estate market in Calvert and the surrounding counties.

Ken is an affiliated commercial broker actively representing NM Commercial Real Estate, and his office is located in Prince Frederick. Ken is presently planning an aggressive canvasing program in Southern Maryland which will concentrate on the trade areas of Prince Frederick, Huntingtown, Dunkirk, Chesapeake Beach, and North Beach.

E-mail Ken

Cell phone : 410-610-3083

Office phone: 443-968-9581

Diana HavennerDiana Havenner, Commercial Designee - Maryland

Diana L. Havenner is a licensed Commercial Real Estate Designee in Maryland. With the power of NM Commercial’s depth of resources and properties, she provides her clients with the information and services to achieve optimum results in their property buying and selling initiatives.

Diana was born in Washington DC, and beyond making this region and its communities her home for over 50 years, she successfully built a reputation in the construction industry which has spanned over 30 years. This includes home building, land development, property management, commercial construction, and the success of her own business in the concrete industry. She has managed many operations and often complicated transactions through the years and knows how and what it takes to get a deal done on time and on budget. She strives not only to meet her client’s expectations, but to exceed them. Additionally, Diana has the benefit of having worked as a licensed mortgage loan officer just prior to obtaining her real estate license, adding this critical knowledge to the benefit of her clients as they maneuver the complex path to the best financial considerations. When it comes to evaluating the properties and options to fit her client’s needs, she calls upon this extensive hands-on background in business contracts, finance and property management to find and negotiate the best alternatives to meet her client’s objectives.

Diana has built her reputation by being truly vested in her clients and her work, and with the resources of one of the most prestigious commercial brokerage firms in Maryland, she looks forward to working with you on all your future commercial endeavors.

E-mail Diana

Cell phone : 443-684-4312

Office phone: 301-609-9550

Boyd CampbellBoyd Campbell, Commercial Designee - Maryland

As I celebrate my 42nd year as a full-time REALTOR® and lifetime Maryland resident, I am as excited and dedicated to the industry today as if it was my first day. That dedication is only exceeded by my devotion to my clients and their commercial real estate needs. I passionately subscribe to the adage “treat others as you would like to be treated.”

I pride myself on my listening skills, honesty, work ethic and integrity, all to the benefit of my client. Investing time in building and supporting relationships with clients, real estate practitioners, community leaders and other industry stakeholders has continually benefited my client. As a former owner-operator of a Century 21 Franchise for 33 years, I believe I have a distinct advantage when serving the business client and their explicit and varied real estate needs. My specific experience in assisting clients in selling, leasing and facilitating the purchase of commercial real property is broad. I currently hold broker’s licenses in Maryland, Virginia and sales associate license in the District of Columbia. I am perpetually anchored to my industry and currently serve as president of the Maryland Realtors as well as numerous industry committees at the local, state and national level. I have literally invested hundreds of hours in continuing education and other industry specific course work so as to better serve my clients. I invite you to go to my LinkedIn page to learn more about my credentials to better serve your needs.

E-mail Boyd

Cell phone : 301-980-6233

Office phone: 301-609-9000

Deanna HavennerDeanna Havenner, Commercial Designee - Maryland

Deanna Havenner is a licensed Maryland REALTOR® and primarily serves St. Mary’s, Calvert, Charles, Prince George’s and Anne Arundel Counties.

As a lifelong resident of Maryland, with the past 28 years in Southern Maryland, Deanna has a passion for people. Her hours are flexible, and she is always only a phone call away. She enjoys meeting new people and assisting them with their needs. Her goals include taking the extra step to assure customer satisfaction with each client she serves. Great clients deserve a dedicated, hardworking and knowledgeable agent; to which Deanna is truly committed.

Prior to her career in real estate, Deanna owned and operated a family-run auto body/mechanical repair shop for more than 35 years in Clinton, Maryland. The many customers met and serviced while running her own business is one of the reasons why Deanna is so successful with commercial real estate. Not only does she have the business expertise and perspective, she also has a network of friends and business owners in which she can market to a broad audience. This, backed by a strong Brokerage and affiliate services, allows Deanna to excel in her field. Deanna resides with her husband, Mike, in White Plains. They have three grown children. When not spending time with family and friends, you will find Deanna on the beach. Her favorite place to be when not selling real estate!

E-mail Deanna

Cell phone : 240-375-5578

Office phone: 301-609-9550

Sandi DennySandi Denny, Commercial Designee - Maryland

After 15 years of sales and management experience, running her own successful business, Sandi began her Real Estate career in January 1989. She quickly became one of the top agents in the company, achieving numerous awards for sales, production and service - most recently the President’s Award for Centurion Producer with Pinnacle Quality Service.

She has 30 years of residential experience and at the request of several of her clients has now entered the commercial arena as well. During her three-decade career in real estate, Sandi has been a Relocation Director, managed a Century 21 Office and worked with a local custom home builder in Southern Maryland for 8 years, thus increasing her knowledge of land acquisition and development. She assisted her clients through the various stages of designing/building a home from start to finish. Additionally, she has attended many specialized marketing classes over the years to help achieve results for her sellers and buyers.

Sandi has always been a firm believer of giving excellent service to her clients and focusing on their needs and has built her reputation as such. Whether it is a simple transaction or one that takes some creativity, she has a keen ear for understanding clients’ needs and works diligently to help them to achieve their goals. Sandi has lived in Southern Maryland since 1964. She and her husband Bob have been residents of Charles County since 1978 and have 3 grown children and 6 grandchildren. Sandi is licensed in MD and VA.

E-mail Sandi

Cell phone : 301-752-0028

Office phone: 301-893-6220

Debra SettleDebra Settle, Commercial Designee - Maryland

Debra Settle epitomizes integrity, energy, hard work and top notch service in every detail of your commercial real estate transaction.

Debra is a life-long resident of Maryland and prior to beginning a full time career in real estate in 1996 she worked in various positions of Personal and Mortgage Banking. She has worked every aspect of the Real Estate industry representing sellers, buyers, investors in both the commercial and residential market. I believe strongly that it is my duty to represent my clients to the best of my ability from start to finish of the transaction.

Debra has two grown children that live out state. When not visiting with family and friends she likes to work out, listen to music and relax anywhere near the water.

E-mail Debra

Cell phone : 301-751-2170

Office phone: 301-609-9550


James White, Commercial Agent, NM Commercial - Maryland

James A. White is an experienced Commercial Agent having worked on the assemblage, development, lease up, construction, and management of over 1.8 MM SF of Retail, Industrial, and Office, involving the acquisitions of over 500 acres of raw land. Additionally, he has worked on the subdivision of over 2,000 housing lots sold to regional and national builders. I enjoy working with Independent Local business owners to help bring their vision to fruition. My specialties include retail, industrial, and office sales and leasing for both Tenants and Owners/Landlords. I am knowledgeable of all retail trade areas, main arteries, shopping centers, and industrial parks in The Baltimore/Washington Corridor including Prince Georges, Anne Arundel, Howard, Baltimore, Harford, Cecil, Carroll, and Frederick Counties. I am also highly skilled and experienced at expediting permits and managing properties.

I enjoy racing sailboats, riding my bike, volunteering for poverty alleviation and crime prevention, and I support independent local businesses, artists, and musicians which enrich our lives and the community.

E-mail Jim

Cell phone : 240-375-6308

Office phone: 410-941-9275


The services provided by NM Commercial are not provided by,

affiliated with or related to Century 21 Real Estate Corporation (or its affiliates) or the CENTURY 21® System.