Drive in through any of the three white brick entrance walls that mark Potomac Falls and you're inside a neighborhood that has been describing itself the same way since before most of its current owners were born. The Potomac Falls Homeowners Association's own materials call membership voluntary, plainly and more than once. Founded in the spring of 1968, the association still runs on annual dues paid by neighbors who choose to join, overseen by an eleven-person elected board. It funds a private security patrol that covers the neighborhood at variable hours, and a landscaping contractor responsible for the entrance plantings, irrigation, lighting, and stonework along the three gateways.

That word, voluntary, is accurate. It is also doing less work than most buyers assume it does, and the gap between what it covers and what it doesn't is exactly where a Potomac Falls closing can slow down.

The Part That's Actually Optional

Maryland law draws a real line between two kinds of homeowners associations. In a voluntary HOA, iPropertyManagement describes membership as a choice, and a homeowner can walk away from it at any time by simply stopping payment.

Potomac Falls sits on the voluntary side of that line, and the association's own site uses the term to describe itself. What that buys a member is access to the services the dues fund directly: the security patrol, the entrance landscaping and irrigation cycles, the seasonal upkeep of the three brick gateways, and a seat in the association's long-running social calendar. Opt out, and you opt out of those specific things. Nobody can force you to write the check.

The Part That Isn't

Here is where the word stops covering the whole picture. In Maryland, People's Law Library of Maryland explains that the declaration and bylaws recorded with the county land records office are treated as binding contracts on current and future property owners.

Practically, this means the terms of the recorded declaration for a specific Potomac Falls lot matter. Maryland's Contract Lien Act, as described by Grihak, gives associations a mechanism to place a lien on a property for breach of a recorded covenant and to foreclose that lien in the same way a mortgage lender would. Whether a particular covenant in a particular Potomac Falls declaration survives a decision to skip membership is a drafting question, not a general rule, which is exactly why it belongs in a title search rather than in an assumption.

There's a second layer worth knowing about here too. As of October 1, 2025, Maryland's Attorney General Consumer Protection Division gained expanded authority over homeowner association disputes, because lot owners are now formally recognized as consumers under state law. For a community with a sixty-year-old declaration and a voluntary dues structure, that's a meaningful change in where a covenant dispute could end up if one surfaces, and it's recent enough that older explanations of how these disagreements get resolved may already be out of date.

The Same Two-Acre Lots Carry a Second Obligation

Potomac Falls' identity rests partly on its lot sizes. Homes sit on a minimum of two acres, a pattern that gives the neighborhood its tree-lined, low-density feel and its proximity to the C&O Canal National Historical Park. That same lot pattern puts it squarely inside a category Montgomery County's Department of Environmental Protection describes directly: in the county's lower-density suburban and rural areas, where public water and sewer mains generally aren't available, private wells and septic systems provide the service instead.

That's not a defect. It's simply a different sanitary arrangement than a WSSC-connected townhouse in downtown Bethesda, and it comes with its own maintenance obligations. The county runs an Onsite Systems Management Program to help owners track it.

The detail that catches people off guard is what happens if public service is later extended to a street that's been running on private systems. Montgomery County's policy is specific here: properties operating under interim permits for a well or septic system are required to connect to public water or sewer within one year of that service becoming available nearby. It's not a hypothetical footnote. It can turn a routine sale into a project with a deadline if nobody caught it during due diligence.

What to Check Before You Sign Anything

None of this is a reason to hesitate on a house in Potomac Falls. It's a reason to ask a short list of specific questions before an offer goes in or a listing goes live.

For buyers, that means confirming whether the HOA's voluntary status extends to the specific covenants attached to the lot, not assuming the two travel together. It means asking whether the home is on a private well and septic system or connected to public water and sewer, and if it's on private systems, whether they've been recently inspected or certified. It also means checking the property's assigned water and sewer service category with the county, since that category determines whether a future connection requirement could apply at all.

For sellers, it means making sure the resale packet distinguishes clearly between association membership status and the recorded declaration, so a buyer's title company doesn't have to reconstruct that distinction under time pressure during a contract period. It also means having documentation ready on well and septic maintenance history, since a well-documented system reads very differently to a buyer's inspector than one with no paper trail at all.

Frequently Asked Questions

If I don't join the Potomac Falls HOA, do the architectural rules still apply to my house? That depends on how the specific declaration recorded against your lot is written, which is a title question rather than a general answer. A title search or an attorney familiar with the specific declaration is the way to get a definitive answer for a given address.

Are all the homes in Potomac Falls on well and septic? The neighborhood's two-acre minimum lots fall into the lower-density category Montgomery County describes as typically served by private systems rather than public mains, but that's a description of the pattern, not a guarantee for every individual lot. Confirming water and sewer service directly for a specific property is part of standard due diligence here.

What happens if WSSC extends public water or sewer to a Potomac Falls street? Under county policy, properties operating on interim well or septic permits are required to connect to the public system within one year of it becoming available. That timeline is worth knowing well before it becomes relevant, since it affects both the cost of ownership and the timing of any future sale.

If you're weighing an offer in Potomac Falls, or getting a two-acre lot ready to list, the covenant language and the septic history are worth a real conversation before either document goes out the door. Kari Wilner has spent three decades working through exactly this kind of paperwork in Bethesda and Potomac's older subdivisions and can help you sort out what's actually required before it turns into a deadline.

This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.