Best ZIP Codes for Cash Flow in Portland-South Portland, ME (2026)

Ranked by cap rate — the annual return on the purchase price before financing. ZIPs that also clear the 1% rule are marked.

# ZIP City Home value Rent Cap rate 5-yr growth
1 04092 Westbrook, ME $464,926 $2,405 4.03% 5.7%
2 04083 Springvale, ME $367,608 $1,895 4.02% 6.3%
3 04084 Standish, ME $477,994 $2,400 3.92% 5.7%
4 04103 Portland, ME $538,851 $2,694 3.90% 5.9%
5 04106 South Portland, ME $533,882 $2,611 3.82% 5.9%
6 04073 Sanford, ME $378,187 $1,768 3.65% 6.6%
7 04062 Windham, ME $502,062 $2,321 3.61% 6.2%
8 04085 Standish, ME $433,955 $1,998 3.59% 5.9%
9 03901 Berwick, ME $484,345 $2,200 3.54% 6.6%
10 04055 Naples, ME $443,195 $2,007 3.53% 5.9%
11 04530 Bath, ME $420,959 $1,870 3.46% 7.2%
12 04102 Portland, ME $551,235 $2,415 3.42% 5.5%
13 04047 Parsonsfield, ME $363,164 $1,566 3.36% 3.8%
14 04009 Bridgton, ME $418,408 $1,795 3.35% 5.5%
15 04011 Brunswick, ME $506,510 $2,156 3.32% 6.3%
16 04579 Woolwich, ME $431,529 $1,818 3.29% 5.6%
17 03908 South Berwick, ME $533,043 $2,200 3.22% 5.9%
18 04027 Lebanon, ME $416,828 $1,710 3.20% 5.3%
19 04076 Shapleigh, ME $417,404 $1,683 3.15% 3.5%
20 04043 Kennebunk, ME $628,844 $2,525 3.13% 5.7%
21 04357 Richmond, ME $341,681 $1,368 3.12% 5.8%
22 04061 Waterboro, ME $392,633 $1,557 3.09% 6.0%
23 04038 Gorham, ME $553,325 $2,175 3.07% 6.4%
24 04005 Biddeford, ME $511,537 $2,003 3.05% 6.5%
25 04029 Sebago, ME $414,747 $1,620 3.05% 4.4%

Ranked from Repit’s own ZIP-level data — Zillow home values and rents, HUD fair-market rents where Zillow has no coverage, and U.S. Census vacancy. Cap rate is gross: annual rent over purchase price, before financing and expenses. Every ZIP above links to its full free page. How we calculate this →

Same metro, different strategy

Appreciation in Portland-South Portland, ME  ·  Affordable in Portland-South Portland, ME

Or see the full Portland-South Portland, ME metro profile.