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820 S Minnesota Ave

Fourplex · 4 units: 2 bed / 1 bath ×3 and 1 bed / 1 bath unit split estimated · 2,533 sq ft

Saint Peter, MN · View the listing ↗

Cash flows

Photos, via Realtor.com.

Asking price
$395,000
4 units · $99K per unit
Monthly cash flow
$723
at 20% down, 7%
Estimated rent
$5,300/mo
medium confidence
Break-even price
$530,812
where cash flow hits $0

Adjust the numbers See the full breakdown

First look

A 4-plex of 7 beds and 4 baths in Saint Peter at $395K, with gross rent 'just under $4000/month' per the listing. Our estimates total about $5,300 at mid, so the stated rent runs well below market, which is room to grow but also means current tenants may be on cheap or informal terms. Our underwriting at asking shows about $723/month cash flow and an 8.6% cap, but taxes are unverified because we couldn't match a county parcel. Photos show dated kitchens, ceiling stains in a bathroom and a tenant-heavy interior, so 'turn key' looks generous. Get the rent roll, leases, tax bill and rental license first, then decide if it's worth a showing.

Things to consider

  1. Rent is a lump sum, not per unit Without a rent roll you can't confirm income, and cash flow depends on it. Underwriting uses our estimates.Listing says: “the gross rent is just under $4000/month”
  2. Unverified taxes and unit count We couldn't match a parcel, so taxes could be higher than assumed and the legal unit count needs confirming.
  3. Interior condition is below 'turn key' Dated kitchens, stained ceilings and worn carpet mean you should budget for repairs and turnover before raising rents.From photo 4
  4. Possible rent upside, with price well below break-even Our rents are above the stated figure, and break-even is $531K, so the margin at $395K is comfortable.
  5. Shared heating and 1880 building age A single boiler and old wiring or plumbing can mean costly systems and owner-paid heat.

From the photos

Listing photo 1
1 of 8Plus

Stucco exterior looks freshly painted and in decent shape, with window air conditioners in several units, which suggests no central cooling.

Listing photo 3
2 of 8Concern

Kitchen has oak cabinets, white appliances, a drop ceiling and worn vinyl flooring; it looks dated, not remodeled.

Listing photo 4
3 of 8Concern

Drop-ceiling tiles near the light fixture are discolored, which may indicate past leaks.

Listing photo 5
4 of 8Check

Baseboard hot-water heat appears along the walls, which suggests a central boiler; the owner may pay for heat.

Listing photo 7
5 of 8Concern

Carpet is worn and stained, and living-room carpeting looks old; the 'some flooring' update appears limited.

Listing photo 8
6 of 8Concern

Bathroom has stained walls and flooring, and the walls show dirt or moisture marks near the base.

Listing photo 10
7 of 8Concern

Bathroom ceiling shows water stains on the tiles, which points to a possible leak above.

Listing photo 1
8 of 8Check

No photos of the boiler, electrical panels, basement, roof or the garage, so the major systems are unseen.

Based on 10 of the listing photos. Photos can hide as much as they show; an inspection is the real answer.

Condition and repairs

  • doneExterior stucco repair and paintListing says: new exterior stucco repair and paint and some flooring
  • doneSome flooring replacedListing says: new exterior stucco repair and paint and some flooring

AI-assisted first read of the listing description and photos (Claude), checked against public records. Every rent and repair above quotes the listing; verify with the agent, leases and an inspection.

The numbers

Down payment %
Offer $
Management
Interest rate %
Edit rents, costs and assumptions

Default: 20% down (no PMI), offer at asking, self-managed, 7.00% for 30 years, buyer pays closing costs (3%).

The deal

Price
$395,000
Cash to close
$90,850
Price per unit
$98,750
GRM
6.2

Each month

Cash flow
$723/mo
Cash-on-cash
9.5%
Cap rate
8.6%
DSCR
1.34×

Break-even

Price that breaks even
$530,812
Rent that breaks even
$4,361/mo

Long run

Year 30: property vs stocks
$2.80M vs $692K
Cash flow turns positive
year 1

Monthly

Monthly breakdown

Rent$5,300
Vacancy (6%)−$318
Collected$4,982
Property tax Listing−$468
Insurance Estimate−$388
Water, sewer, trash Estimate−$340
Lawn care ($120 × 6 mo ÷ 12)−$60
Repairs (8% of rent)−$424
Capital reserve (9% of rent)−$477
Net operating income$2,825
Mortgage (principal + interest)−$2,102
Cash flow$723
Principal paid down (equity, not cash)$267

Cash flow each year

Rents +3%/yr, costs +3.5%/yr. Red bars are months you'd cover out of pocket.

30 years

How those totals add up

If you buy this building$2,797,111
Your equity when you sell
$901,243

Sells for $958,769 (value up 3% a year), minus 6% selling cost ($57,526). Rent paid down $316,000 of loan.

Rental profits, invested at 7%
$1,895,868

$795,083 of cash flow over 30 years, plus what it earned invested.

Same money in stocks$691,573
Cash to close, invested at 7%
$691,573

$90,850 put into an index fund instead of the down payment and closing costs.

The building comes out $2,105,538 ahead after 30 years.

Future dollars. At 3% inflation, divide year-30 figures by about 2.4 for today's buying power. Rental profits are assumed invested, not spent.

30 years: this property vs. the same money in stocks

This propertyStocks at 7%

Year 30 (loan paid off): property $2.80M, stocks $692K. The property wins.

Comparable rentals

Nearby rentals RentCast matched to each unit type, as of 2026-10-05. The estimate above is RentCast's, weighted toward the closest matches.

2 bed / 1 bath estimate $1,300/mo · range $1,200–$1,400

AddressRentBd / BaSq ftDistanceListedMatch
219 Park Row, Unit B, Saint Peter 56082 $1,200 2 / 1 — 0.5 mi 2023-01-06 93%
1701 Riggs Rd, Apt 1, Saint Peter 56082 off market $995 2 / 1 — 1.7 mi 2026-05-12 91%
1701 Riggs Rd, Apt 3, Saint Peter 56082 off market $995 2 / 1 — 1.7 mi 2025-04-14 91%
1707 Riggs Rd, Apt 2, Saint Peter 56082 off market $1,045 2 / 1 — 1.8 mi 2026-04-16 91%
314 S 3rd St, Unit 3C, Saint Peter 56082 $1,350 2 / 1 1,160 0.4 mi 2026-10-01 87%
301 S Washington Ave, Saint Peter 56082 $1,260 2 / 1 1,157 0.4 mi 2026-01-14 86%
208-212 S Minnesota Ave, Saint Peter 56082 $1,100 2 / 1 950 0.4 mi 2024-05-22 84%
117 S Minnesota Ave, Saint Peter 56082 off market $1,100 1 / 1 — 0.5 mi 2026-07-17 84%
121 W Lind St, Apt 2, Mankato 56001 off market $1,145 2 / 1 — 9.5 mi 2025-04-28 80%
131 W Lind St, Apt 5, Mankato 56001 off market $1,145 2 / 1 — 9.5 mi 2025-04-28 80%

1 bed / 1 bath estimate $1,400/mo · range $1,275–$1,500

AddressRentBd / BaSq ftDistanceListedMatch
117 S Minnesota Ave, Saint Peter 56082 off market $1,100 1 / 1 — 0.5 mi 2026-07-17 93%
219 Park Row, Unit B, Saint Peter 56082 $1,200 2 / 1 — 0.5 mi 2023-01-06 84%
215-217 S Minnesota Ave, Saint Peter 56082 off market $850 1 / 1 700 0.4 mi 2026-03-17 82%
1701 Riggs Rd, Apt 3, Saint Peter 56082 off market $995 2 / 1 — 1.7 mi 2025-04-14 82%
1701 Riggs Rd, Apt 1, Saint Peter 56082 off market $995 2 / 1 — 1.7 mi 2026-05-12 82%
1707 Riggs Rd, Apt 2, Saint Peter 56082 off market $1,045 2 / 1 — 1.8 mi 2026-04-16 82%
1573 Aspen Dr, Saint Peter 56082 $1,255 1 / 1 704 0.7 mi 2025-04-12 82%
605 Swift St, Saint Peter 56082 off market $974 1 / 1 500 1.0 mi 2026-03-05 79%
1403 N Washington Ave, Saint Peter 56082 off market $975 1 / 1 550 1.5 mi 2026-05-15 79%
301 N Riverfront Dr, Apt 305, Mankato 56001 off market $995 1 / 1 — 10.6 mi 2026-01-21 78%

On the maps, this property and comparable rentals. Comparable rentals and rent estimate: RentCast. Rents are asking rents from listings; check them against the actual leases.

Red flags and opportunities

Watch for

  • mediumCouldn't match this address to a county parcel record, so taxes and unit count are unverified. Public record: County parcels: no match for 820 MINNESOTA AVE S
  • mediumOnly total gross rent is given, with no per-unit rents or lease terms to verify it. Listing says: the gross rent is just under $4000/month · AI review
  • medium'Turn key' claim conflicts with the dated interiors and ceiling stains seen in photos. Listing says: This turn key property is definitely one to look at. · AI review
  • mediumWater, sewer, trash and heat responsibility is not stated; only electricity is assigned to tenants. Heat appears to be baseboard hot water, which suggests a shared boiler. Listing says: The tenants are responsible for paying their own electricity. · AI review
  • lowBuilding dates to 1880 and the unit count and taxes are unverified. Based on: data: listing.year_built · AI review

Opportunities

  • Stated gross rent is below our mid estimate of about $4,750, so there may be upside as leases turn. Listing says: the gross rent is just under $4000/month · AI review
  • Plenty of parking, with a gravel lot and a 3-stall garage that could carry extra income. Listing says: ample off-street parking on the large gravel parking lot and the 3-stall garage · AI review

Questions for the agent

  • Can you provide the rent roll with per-unit rents, lease end dates and deposits?
  • Which utilities does the owner pay: water, sewer, trash, heat? Is there one boiler or several?
  • What is the current tax bill, and is the rental license for four units?
  • How old are the roof, boiler, water heaters and electrical panels?
  • What caused the ceiling stain in the bathroom, and has it been repaired?
  • How were the 'continuous' rental history and the remodeling documented?

Bottom line

Numbers look workable at $395K, but with only a lump-sum rent figure, unverified taxes and tired interiors, treat 'turn key' as unproven until you see the rent roll and an inspection. AI-assisted summary

What the records say

Where each number comes from

Property tax / yr Listinglisting, tax year 2026. The tax the listing states. If the seller lives there it may be at the lower homestead rate; an investor owner pays the non-homestead rate, often 20–40% more on the owner's unit.$5,613
Insurance / yr Estimateestimate. from units, square feet and age; get a quote$4,657
Water, sewer, trash / mo Estimateestimate. $85/unit/mo, owner-paid$340
Heat / mo Assumptionassumption. tenants pay heat; confirm with the agent$0
Lawn care / mo Assumptionassumption. $120/mo for 6 months, spread over 12; no snow removal$60
Repairs / capital reserve Rulerule. built 1880: +1 pt capital reserve8% / 9%

Price history Realtor.com

On the market since 2026-08-31 (35 days); last sold for $290,000 on 2023-04-28.

DateEventPrice
Listed$395,000
Listed$395,000
Sold public record$290,000
Removed$199,900
Removed$199,900
Listed$199,900
Sold public record$144,000

From the listing Listing

Listed asfour plex
Property tax, 2026$5,613
CountyNicollet
Parcel number194124550

As the listing states it (NorthstarMLS, via Realtor.com). We don't have county records here yet; check the tax, homestead status and special assessments with the county.

Crime, rental-license and vacant-building records are only available for St. Paul and Minneapolis so far. Check with Saint Peter on rental licensing before you buy.