| HOUSING | Portsmouth | Bolton | United States |
| Median Home Age | 37.9 | 29.7 | 35.1 |
| Median Home Cost | $281,800 | $407,700 | $153,800 |
| Home Appreciation | -2.61% | -0.72% | 1.62% |
| Homes Owned | 62.59% | 88.72% | 57.69% |
| Housing Vacant | 15.75% | 3.91% | 11.38% |
| Homes Rented | 21.67% | 7.36% | 30.93% |
| Property Tax Rate | $16.75 | $13.23 | $11.20 |
| OWNER-OCCUPIED HOUSING UNITS BY VALUE | | | |
| Less Than $20,000 | 0.00% | 0.00% | 2.72% |
| $20,000 to $39,999 | 1.98% | 0.00% | 4.03% |
| $40,000 to $59,999 | 1.90% | 0.00% | 5.58% |
| $60,000 to $79,999 | 0.54% | 0.00% | 7.09% |
| $80,000 to $99,999 | 0.65% | 0.00% | 8.80% |
| $100,000 to $149,999 | 2.52% | 0.45% | 21.26% |
| $150,000 to $199,999 | 13.66% | 1.21% | 14.87% |
| $200,000 to $299,999 | 39.61% | 10.50% | 16.82% |
| $300,000 to $399,999 | 18.01% | 18.96% | 7.83% |
| $400,000 to $499,999 | 9.45% | 23.28% | 4.04% |
| $500,000 to $749,999 | 8.46% | 29.52% | 4.05% |
| $750,000 to $999,999 | 1.19% | 10.11% | 1.26% |
| $1,000,000 or more | 2.02% | 5.98% | 1.64% |
| HOUSING UNITS BY YEAR STRUCTURE BUILT | | | |
| 1999 to 2005 | 9.81% | 11.96% | 13.71% |
| 1995 to 1998 | 10.95% | 23.12% | 14.31% |
| 1990 to 1994 | 10.95% | 23.12% | 14.31% |
| 1980 to 1989 | 15.43% | 14.58% | 13.87% |
| 1970 to 1979 | 18.06% | 16.66% | 16.17% |
| 1960 to 1969 | 15.35% | 11.53% | 11.70% |
| 1950 to 1959 | 10.83% | 3.66% | 11.08% |
| 1940 to 1949 | 5.24% | 1.89% | 6.02% |
| 1939 or Earlier | 14.34% | 16.60% | 13.15% |
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