Investing in Potomac, MD — Market Analysis
Potomac sits at the luxury end of the Maryland investment market, with a median home price around $1,250,000. Potomac is a suburban growth market, which typically means single-family stock, longer average tenancies, school-district-driven demand, and lower turnover cost than urban infill. Suburban DSCR deals tend to underwrite cleanly because the rent comps are homogeneous.
Buying a rental property in Potomac on a DSCR loan means putting a minimum of $250,000 down (20% of purchase price), leaving a loan amount of $1,000,000 at 80% LTV. At current DSCR investor pricing near 7.50%, principal and interest on that loan runs about $6,992 per month. Add Montgomery County property taxes of roughly $1,104/month and landlord insurance of about $500/month, and your all-in PITIA lands near $8,596/month. That PITIA figure — not the P&I — is what the lender divides your rent into.
A long-term lease in Potomac should generate roughly $5,025/month in gross rent. Against a PITIA of $8,596, that produces an estimated DSCR ratio of 0.58x. That is well below the 1.0 threshold on a long-term lease, which is typical for a market at this price point. Financing here generally works one of three ways — a larger down payment, a no-ratio DSCR product, or qualifying on short-term rental revenue instead of long-term rent.
Two Maryland-specific items to build into your model: Maryland reassesses every parcel on a rolling three-year cycle and charges both state and county transfer and recordation taxes at closing; Baltimore City and several counties require rental licensing and lead certification before a unit can be legally leased. In Potomac specifically, effective property tax on investment property runs around 1.06% of value annually — about $13,250 a year at the median price — and landlord insurance near $6,000 a year.
On return metrics, Potomac pencils to an estimated cap rate of 2.99% using a 62% NOI margin, and a gross rent multiplier of 20.7. Monthly cash flow on a long-term lease at 20% down is estimated at $3,571 negative. Negative cash flow at 20% down is common in appreciation-led markets; investors here typically increase the down payment, buy below median, add a unit, or run the property short-term to close the gap.

