Dover · 5 locations

Storage unit prices in Dover, NH

The cheapest 10x10 in Dover is $43, on New Zealand in Seabrook, against a market median of $62; the dearest branch, Knox Marsh, starts at $114.

The market also holds Brentwood, Seabrook and Somersworth.

Only 5 locations feed this page, so a single branch moves every figure on it further than it would in a bigger market.
Public Storage publishes a review score for each branch. Across Dover they run from 1.5 on Sumner to 4.8 on NH-125 in Brentwood.
That $43 rests on one address. The next cheapest branch, NH-125 in Brentwood, wants $57, so a unit gone from the first is a 33% jump rather than a short walk.
Rates here land 35% under the US median, so what moves them is the region rather than any one address.

20 km $43 cheapest · $114 dearest

Size	Sq ft	Locations	Cheapest	Typical	Dearest	Typical spread
5x10	50	5	$23	$51	$102	274%
10x10	100	5	$43	$62	$114	79%
10x15	150	5	$69	$85	$137	55%

All markets · National prices by size

Dover is the cheapest market near it

Market	Distance	Median 10×10	vs Dover
Nashua, NH	67 km	$69	+11%
Boston, MA	71 km	$121	+95%
Randolph, MA	112 km	$138	+123%

Where these numbers come from. 15 advertised prices read from Public Storage's own published listings across 5 locations, last checked 2026-08-12.

Online rate vs regular rate. Every listing publishes two figures. Measured across thousands of observations, the regular rate is 1.5× the online rate at the median, with 88% inside 1% of that and none outside 1.40–1.60×. That is a pricing rule, not a second quote. The online rate is the promotional price for booking on the web; the regular rate is what the unit reverts to. Budget on the regular rate. Comparisons here hold the basis constant, so the gap between locations is real either way.

These are advertised rates for new rentals, not quotes — Public Storage states prices are not guaranteed and they move with availability. Insurance, admin fees and limited-time offers are not included.