Monmouth County

Monmouth County sits at a 0.043 gross rent-to-price ratio on a $786,951 median home price with $2,827 in median monthly rent. That ratio alone tells most of the story: this is an appreciation market, not a cash-flow market. The cap rate pencils at 2.8%, and the model underwrite produces negative $2,287 per month in cash flow with a cash-on-cash return of negative 15.16% at a 20% down payment and 6.85% financing. The appreciation score of 93 out of 100 reflects the other side of that trade, with home prices up 7.19% year over year. Monmouth ranks 18th out of 21 New Jersey counties overall, and sits at the 19th percentile nationally out of 1,000 counties. There is no ambiguity about what this market is.

The investor this market suits is one who can carry negative leverage in exchange for price appreciation, which means either a high-net-worth buyer who does not need monthly income from the asset, or someone with a specific equity-capture thesis. A value-add operator buying below median, forcing appreciation through renovation, and refinancing or selling into a market with a 93 appreciation score could make the math work, but the entry price has to be well below $786,951 to change the return profile meaningfully. A conventional cash-flow buyer running standard underwriting will find no path to positive returns at current prices and financing costs without an unusually large down payment that reduces the mortgage drag. The affordability score of 8 out of 100 confirms this is not a market where tenants are easily replaced if a unit sits vacant, and that concentration of demand at the upper end of the rent range introduces its own risk.

Property taxes are the single largest underwriting variable in Monmouth and they deserve their own line before you build any pro forma. The state-average effective rate is 2.49%, flagged here as very high, and at $786,951 in purchase price that produces an estimated $19,595 in annual property taxes alone. Combined with insurance at an estimated $1,653 annually, the monthly tax-and-insurance carry is approximately $1,771 before a single dollar of mortgage, maintenance, management, or vacancy. To be clear, 2.49% is a state-average estimate from Tax Foundation 2024 data, and actual township or county rates in Monmouth may differ, but even directionally this figure is a real constraint. New Jersey's property tax burden is consistently among the highest in the country, and at this price point it is not a rounding error. It is the reason a $2,827 rent barely covers taxes and insurance before touching the $4,125 monthly mortgage payment.

The data does not include economic anchor or employer information for Monmouth, so no conclusions are drawn here about specific demand drivers. What the population figure of 643,064 does confirm is that this is a sizable, established county, not a thin market where a single employer exit would crater rents, but the data does not support claims beyond that.

The risk profile is concentrated in three areas the numbers do support. First, affordability at an index of 8 means tenant demand is narrowly concentrated among higher-income renters, and any softening in that cohort's employment or income has an outsized effect on vacancy and concessions. Second, the combination of very high property taxes and a sub-3% cap rate leaves almost no margin for error in operating assumptions. A 10% increase in insurance costs or a contested property tax assessment meaningfully moves an already-negative cash-flow number further negative. Third, the appreciation thesis that justifies holding this asset is real at 7.19% year over year, but it is also the thesis that makes the asset unaffordable to buy and hard to exit quickly if the appreciation cycle turns.

Against the five neighboring counties, Monmouth carries the highest median home price at $786,951, which is $51,000 more than Bergen County, the next most expensive at $735,505. Hudson County is the clearest contrast: at $617,352 median price and $2,912 median rent, Hudson produces a 0.0566 rent-to-price ratio versus Monmouth's 0.043, which is a materially better cash-flow starting point. Union and Passaic Counties both come in below $615,000 with rent-to-price ratios above 0.047, and both score 51 overall versus Monmouth's 48. Bergen is the closest comp at 0.0453 rent-to-price and a 52 overall score, slightly better on both dimensions at a lower price. An investor should choose Monmouth over these neighbors specifically when the investment thesis is price appreciation in a high-barrier coastal New Jersey submarket, not when the goal is positive monthly cash flow. If income matters, every neighboring county in this dataset outperforms Monmouth on the rent-to-price ratio, and most do so at $150,000 to $200,000 less in entry cost.