Two generations. One building. Roughly 75 people who never moved on to a corporate parent — and 400+ communities and 40,000 homes that have stayed because of it.
Stanley Greenberg founded Tidewater in 1989, working from connections built during his career with the City of Baltimore. The first clients were commercial condos and developer projects — small accounts with real people on the other end of the phone.
His son Marc joined in the late 1990s and brought a different lens: existing communities, homeowner-controlled boards, and the long, patient work of community association management. Marc earned his CMCA, then AMS, then PCAM — the highest individual credential the industry offers.
The company grew. It crossed state lines into DC, Virginia, Pennsylvania, Delaware, and West Virginia. It picked up the AAMC® accreditation — the highest company-level credential CAI awards. It hired a Controller with an MBA and CPA, a Director of HR with SHRM-CP, a Director of QA with a PCAM and a former chapter presidency. It now manages 400+ communities and more than 40,000 homes.
And the Greenberg family is still in the building. Their door is open to every employee and every board chair who wants to talk to ownership, not a regional vice-president three time zones away.
The way we work isn’t a wall poster. It’s the call you get back the same morning, the financial report by the 15th, and the manager who knew your community before you joined the board.
Over the last decade, most of our regional peers have been acquired — by national chains, by private equity, by holding companies you’ve never heard of. We have been approached. The answer has been the same every time.
We answer to two people whose last name is on the door, not a quarterly board in another time zone. That’s the difference. It shows up in every decision — what we charge, who we hire, how we treat a board that’s been with us 22 years.
Independent operation isn’t a bullet point — it’s 35+ years of continuous decisions to stay that way.
Stanley Greenberg starts the company in Owings Mills, Maryland — initially serving commercial condominium associations and developer-phase communities.
Stanley's son joins the firm, expanding focus into homeowner-controlled HOA management. The first multi-county portfolio takes shape.
Operations extend across Maryland, into DC and Northern Virginia, then to the Eastern Shore and Delaware. The company grows past 100 communities under management.
Tidewater's Director of Quality Assurance leads the regional CAI chapter — beginning a sustained pattern of Tidewater leaders shaping the standards of the profession.
Tidewater earns CAI's highest company-level credential — a designation most regional management firms do not hold.
Tidewater expands to the Maryland coast with a new Ocean City office, extending the Delmarva portfolio into Worcester County and the resort community market.
Senior Director of Operations Gail Windisch serves two consecutive terms on the CAI Chesapeake Chapter board — Secretary (2019), President-Elect (2020), President (2021), then re-elected as Secretary (2022), Vice President (2023), and Member at Large (2024) — making Tidewater one of the most embedded firms in regional CAI leadership.
Tidewater acquires a Delaware-based portfolio, adding coastal Delaware communities to its footprint and extending the Delmarva operation into Sussex and Kent counties.
A dedicated QA and Compliance department is established under the leadership of former CAI Chesapeake Chapter President Joe Jordan — tracking insurance, safety inspections, tax filings, and budget cadences across every community in the portfolio.
Manage 400+ associations and 40,000+ homes across six states. AAMC®, A+ BBB. Two CAI Chapter Presidents on staff. Still owned by Stanley and Marc.
Five values, stated plainly, with the proof behind each one. We use them on Mondays, in budget meetings, and at 11pm on a Sunday when a pipe lets go.
"We practice integrity and accountability in all that we do."
When we make a mistake, we own it — including covering association costs out of pocket when we're not contractually obligated to. Ask any board that's been with us a decade.
"We innovate and adapt to client needs, delivering reliable and industry-leading service."
CINC Systems for HOA, AppFolio for rental, Microsoft Copilot at every desk, a proprietary in-house vendor compliance app. We invest in tooling so the work shows up faster.
"We are a resource that provides support, education, and clear expectations."
Board education materials, governance guidance, and communication that skips the jargon. Volunteer board members didn't sign up to read law journals — we translate so you can decide with confidence.
"We emphasize honest, respectful, and timely communication."
Next-business-day response. 20-minute callback after hours. Monthly management reports on the 1st. Every public review answered same or next day. Standards, not slogans.
"We create a culture of trust, teamwork, and growth."
Tidewater pays for every CAI designation upfront — for managers, administrators, and accountants. Monthly BBQs. Open-door ownership. Long tenures. The culture inside is the culture clients meet.
Most management companies make claims. We hold the credentials that back them — some at the company level, some at the individual level, all issued by third parties.
CAI's highest company-level credential. Re-audited on a recurring basis against operational, financial, and governance standards. Most regional management companies do not hold it.
Highest rating issued by the BBB. Reflects 35+ years of accredited operation and continuous response to public concerns.
Joe Jordan (2012, current Director of QA) and Gail Windisch (multiple terms as President, Vice President, and Secretary). The leaders running our compliance department helped write the regional standards.
The President (Marc Greenberg), Senior Director of Operations (Gail Windisch), Director of QA (Joe Jordan), and Delmarva Regional Director (Don Gentry) all hold the PCAM. Several of our Community Association Managers also hold the CMCA designation.
Tidewater pays for every CAI designation upfront — for managers, administrative staff, and accountants. The result is a leadership team whose qualifications are visible, verifiable, and rooted in regional industry leadership.
President — holds all three primary CAI management designations including the industry’s highest individual credential.
Senior Director of Operations · Former CAI Chesapeake Chapter President, Secretary, and VP. 20+ years with Tidewater.
Director of Quality Assurance · Former CAI Chesapeake Chapter President (2012). Leads our compliance oversight team.
Delmarva Regional Director · 20+ years in customer service and real estate. Oversees the Eastern Shore, Ocean City, and Delaware portfolio.
Baltimore Metro Regional Director · Co-leads the developer management program. 15+ years industry experience.
Director of Association Financial Management · 20+ years at Tidewater. Backed by an MBA, CPA Controller.
Director of Human Resources · SHRM-certified. Leads company-wide HR standards, expectations, and staff development.
Controller · MBA and CPA credentials. Focuses on company finance administration and accounting processes.
Director of Rental Management · Licensed real estate broker. Oversees rental management and Realty operations across Maryland, Delaware, and Virginia.
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Tell us a little about your community and the right person will be in touch within one business day. No pressure, ever.
Request Proposal / Contact →Prefer to call? (443) 548-0191 · 24/7 emergency line for current communities
