Loudoun County

Loudoun County's gross rent-to-price ratio sits at 3.91%, which tells you most of what you need to know before running a single spreadsheet. At a $805,711 median purchase price against $2,626 in monthly rent, the math produces a 2.54% cap rate and, once you layer in a $4,224 monthly mortgage at 6.85%, estimated expenses of $919, and the $705 monthly tax-and-insurance carry, you arrive at negative $2,517 in monthly cash flow on a 20% down payment. That is a cash-on-cash return of -16.3%, not a rounding error or a bad assumption, just the arithmetic of a high-cost market where prices have historically been bid up well beyond what rents can support. Year-over-year home price growth of 0.08% suggests the appreciation engine that justified those valuations has largely stalled, at least for now, leaving investors in an uncomfortable middle ground: neither meaningful cash flow nor near-term price gains to paper over the carry cost.

This market does not suit a cash-flow buyer at current pricing. A score of 29 out of 100 on cash flow and a national percentile rank of 17th place that bluntly. The appreciation score of 51 is middling, not the kind of number that justifies absorbing a $2,500-per-month deficit in exchange for long-run price appreciation. Who does have a plausible use case here? An investor with substantial equity from another position looking for a low-leverage, long-duration hold in a high-income market, or a value-add operator who can identify a distressed asset well below the $805,711 median and bring rents materially above the $2,626 median through renovation. The median household income of $170,463, one of the highest county-level figures in the country, does signal that the renter pool has real paying power, but translating that into actual rent growth requires finding the right asset class and submarket, not buying at the county median and hoping.

Because no economic anchors were provided in the underlying data, specific employer commentary is not included here. What the income and stability numbers do suggest is a county tied to the broader Northern Virginia technology and federal contracting corridor, which tends to produce a professional renter cohort with low default risk. The stability score of 50 reflects neither unusual resilience nor unusual fragility, a market that moves with the broader D.C.-area economy rather than one with idiosyncratic risks from a single employer or sector.

On carry costs, the combined monthly tax and insurance figure of $705 is worth reviewing in the context of Virginia's state-average effective property tax rate of 0.82%, which the data flags as normal. That rate is not punitive, but at an $805,711 purchase price, the absolute dollar amounts are large simply because the asset value is large: $6,607 annually in estimated property tax alone. The 0.82% figure is a state-average estimate and, as the underlying data notes, actual county and township rates will differ, so confirm the Loudoun-specific rate before finalizing any underwrite. At these price levels, a variance of even 0.10 percentage points in the effective rate moves annual tax cost by roughly $800.

The principal risk here is valuation. Loudoun is not a distressed or demographically shrinking market, but a 3.91% gross yield on an $800,000-plus asset leaves almost no margin for vacancy, capex surprises, or any normalization of interest rates that suppresses refinance optionality. Affordability scores of 59 suggest that even a high-income renter base finds homeownership stretched, which can sustain rental demand, but it also caps the universe of buyers if you need to exit, since an affordability index below 60 signals that a large portion of potential buyers cannot qualify at current prices and rates.

Compared to its neighbors, Loudoun and Fairfax County are nearly identical from a yield perspective: Fairfax County's rent-to-price ratio is 3.92% against Loudoun's 3.91%, and both carry an overall score in the mid-40s. Fairfax City comes in at 3.89% with a slightly lower median price of $755,224. None of these differences are material enough to make one Northern Virginia market clearly preferable to another on the fundamentals alone. Buchanan County at $74,741 median and Brunswick County at $130,410 exist in an entirely different market segment where entry costs are dramatically lower, though the absence of rent data for those counties prevents a clean yield comparison. An investor should choose Loudoun over its neighbors only if the specific thesis is long-duration wealth preservation in a high-income, low-vacancy corridor and the negative carry can be funded from other income. If the goal is any near-term return on invested capital, the data does not support Loudoun at current prices.