Why is the county spread so wide?
Proximity to Boston. The southern tier absorbs demand from people priced out of the Massachusetts market, and that pressure runs down as you move north.
Rockingham County sits directly on the Massachusetts line and covers much of the Seacoast, and it tops the state on both rents and home prices. Hillsborough County, covering Manchester, Nashua, Bedford, and Merrimack, sits close behind. Coös County at the northern end has neither the commuter demand nor the employment density, and its rents reflect that.
For an investor the implication is direct: a building in Coös at half the price of one in Rockingham isn't half the investment, because the rents are also lower and the tenant pool is thinner. The cheaper entry doesn't automatically produce better yield.
How fast are rents actually rising?
Faster than incomes, and for long enough that it's structural rather than cyclical.
New Hampshire Housing's Residential Rental Cost Survey found statewide median two-bedroom gross rent up 36% across five years to 2024, with a 3.9% increase in the final year of that stretch. Manchester–Nashua multifamily showed rent growth of 4.1% year over year in 2026.
That growth is a function of supply. New Hampshire's rental vacancy ran about 3.9% in early 2025, below the roughly 5% New Hampshire Housing treats as balanced, and at the tightest recent point the statewide two-bedroom vacancy rate was measured at 0.6% in early 2023.
What should I use for underwriting?
Something other than the Fair Market Rent figure on its own. FMR is a HUD administrative number used for housing assistance programs, and it's calculated to represent a particular percentile of the local market rather than what a specific renovated unit will command.
Use it as a floor and a sanity check. Then adjust for:
Unit size and mix. A two-bedroom median tells you little about a studio or a four-bedroom. Unit mix is one of the largest drivers of a building's actual gross.
Condition. A renovated unit and a dated one in the same building rent differently, sometimes by several hundred dollars.
Utilities. Whether heat and hot water are included changes the effective rent substantially, and in New Hampshire's climate, heat is not a small line. Gross rent with heat included isn't comparable to gross rent without it.
Submarket. Manchester spans a wide range within one city, and Hillsborough County alone covers Nashua, Merrimack, Milford, Amherst, Hudson, Litchfield, Goffstown, and Bedford. A county-level figure flattens all of it.
Want real comparable rents for a specific building rather than a county median? Send me the address and I'll pull them. Two business days, no obligation.
Does rent growth make up for compressed cap rates?
Partly, and it's the honest case for buying into this market at current pricing.
New Hampshire cap rates are tight. Manchester multifamily traded around 5.25% to 5.75% in 2026. If you buy at market with rents already at market, current yield is modest.
Rent growth is what changes that over time. A property bought at a 5.5% cap with rents rising in the 4% range each year produces a materially different return in year five than in year one, provided expenses don't rise at the same pace. Property taxes are the risk to that assumption, since they're the largest expense line most investors can't control.
This is why New Hampshire reads as an appreciation and rent-growth market rather than a current-cash-flow market. The returns are real. They arrive later than a first-time investor usually expects.
What about short-term rental income?
A different question with a different answer, and worth separating.
Short-term rental revenue in New Hampshire's resort markets can far exceed long-term rent on the same property, and it comes with severe seasonality, higher operating costs, active management, and town-by-town legality questions. A Conway property averaging $42,842 a year in short-term revenue sits in a different category from a Manchester triple-decker unit at $1,855 a month, and neither number tells you anything about the other market.
If you're weighing the two strategies, the zoning question comes first. Most New Hampshire towns decide short-term rental legality through their own ordinances, and the answer changes at the town line.
