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1334 Oak Beach Dr

Duplex · 2 units: 3 bed / 2.5 bath ×2 unit split estimated · 3,862 sq ft

Fairmont, MN · View the listing ↗

Far off

Photos, via Realtor.com.

Asking price
$399,000
2 units · $200K per unit
Monthly cash flow
−$932
at 20% down, 7%
Estimated rent
$2,800/mo
medium confidence
Break-even price
$223,810
where cash flow hits $0

Adjust the numbers See the full breakdown

First look

This is a lakefront left-right duplex in Fairmont, and the price is driven by the water, not by rent. Our rent estimate is about $1,400 per side, or roughly $2,800 a month, and at $399K that gives a 3.6% cap rate and about -$932 a month at 20% down. Break-even is near $224K, so the ask is far too high for an investment buyer. It has sat 435 days, so the seller may be flexible, but the numbers only work if you plan to live in one side or get a deep cut. Check the boiler and its install, the rental license, and what each side really rents for before you spend time on a showing.

Things to consider

  1. Rents don't support the price At the default scenario the property loses about $932 a month and the cap rate is 3.6%. Break-even is roughly $175K below ask, so an investor needs a very different price.
  2. Long time on market gives leverage At 435 days the seller has had plenty of time to test the market. A low offer backed by the numbers is reasonable.
  3. Income is unverified The listing gives no current rents or lease status. Our $1,400-per-side estimate is only a guess until you see leases.Listing says: “Live in one, rent the other - or make the most of both!”
  4. Bedroom count may be overstated The den and basement office are not legal bedrooms without egress. Rents depend on true bedroom counts.Listing says: “which could easily become a bedroom with the addition of an egress window”
  5. Dated finishes and staged photos Kitchens and baths look older, and some photos are virtually staged. Budget for updates before you can push rents.From photo 7
  6. Lakefront carries extra risk and cost Slope, retaining walls, dock and boathouse add upkeep and can raise insurance. Get a shoreline and flood zone check.From photo 1

From the photos

Listing photo 1
1 of 8Check

Steep wooded slope with stairs, retaining walls and a dock to the lake. Stairs and walls appear weathered; shoreline upkeep may be costly.

Listing photo 1
2 of 8Check

Boathouse is a small shed-style building, and the stairs to it appear worn. Check its condition and whether it adds real value.

Listing photo 7
3 of 8Concern

Kitchen has dated knotty-pine paneling, laminate counters and older cabinets. Appliances appear newer, but the finishes are cosmetic and original-era.

Listing photo 8
4 of 8Concern

Bathroom has a corner jetted tub, glass-block-style shower and dated brass fixtures. It appears 1990s and works, but a refresh would be needed to raise rent.

Listing photo 3
5 of 8Check

Baseboard hot-water heat is visible along the walls, consistent with a boiler system. Pipes and the boiler itself aren't shown.

Listing photo 10
6 of 8Check

Exterior has vinyl or aluminum-looking siding, an asphalt shingle roof and an attached garage. The roof appears in fair shape, but age is unknown.

Listing photo 3
7 of 8Check

Several interior photos look staged and carry-over styling is heavy. No photos of the boiler, electrical panel, basement or the north unit.

Listing photo 10
8 of 8Concern

Large trees stand close to the house, with a limb or debris on the ground. Check for roof and gutter wear and tree damage.

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

Condition and repairs

  • doneNew energy-efficient boiler systemListing says: Brand new, energy-efficient boiler system
  • doneNew basement flooring in south unitListing says: The finished basement adds even more living space with brand-new flooring
  • neededEgress window needed to make basement office a legal bedroomListing says: which could easily become a bedroom with the addition of an egress window

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
$399,000
Cash to close
$91,770
Price per unit
$199,500
GRM
11.9

Each month

Cash flow
−$932/mo
Cash-on-cash
−12.2%
Cap rate
3.6%
DSCR
0.56×

Break-even

Price that breaks even
$223,810
Rent that breaks even
$3,995/mo

Long run

Year 30: property vs stocks
$926K vs $1.36M
Cash flow turns positive
year 25

Monthly

Monthly breakdown

Rent$2,800
Vacancy (6%)−$168
Collected$2,632
Property tax Listing−$532
Insurance Estimate−$230
Water, sewer, trash Estimate−$170
Lawn care ($120 × 6 mo ÷ 12)−$60
Repairs (8% of rent)−$224
Capital reserve (8% of rent)−$224
Net operating income$1,191
Mortgage (principal + interest)−$2,124
Cash flow−$932
Principal paid down (equity, not cash)$270

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$925,543
Your equity when you sell
$910,369

Sells for $968,478 (value up 3% a year), minus 6% selling cost ($58,109). Rent paid down $319,200 of loan.

Rental profits, invested at 7%
$15,174

$13,525 of cash flow over 30 years, plus what it earned invested.

Same money in stocks$1,359,469
Cash to close, invested at 7%
$698,577

$91,770 put into an index fund instead of the down payment and closing costs.

Monthly shortfalls, invested
$660,892

$146,188 you'd have paid in while the building lost money, invested instead.

Stocks come out $433,926 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 $926K, stocks $1.36M. Stocks win.

Comparable rentals

Nearby rentals RentCast matched to each unit type, as of 2026-10-06. The estimate above is RentCast's, weighted toward the closest matches.

3 bed / 2.5 bath estimate $1,400/mo · range $1,300–$1,525

AddressRentBd / BaSq ftDistanceListedMatch
1205 Victoria St, Apt 320, Fairmont 56031 off market $1,025 3 / 1 975 1.1 mi 2025-05-15 73%
900 Hengen St, Apt 202, Fairmont 56031 off market $1,000 3 / 1 850 1.2 mi 2026-04-17 73%
910 Hengen St, Apt 402, Fairmont 56031 off market $1,000 3 / 1 850 1.2 mi 2026-04-17 72%
910 Hengen St, Apt 302, Fairmont 56031 off market $1,000 3 / 1 850 1.2 mi 2026-04-17 72%
603 Albion Ave, Apt 1, Fairmont 56031 off market $1,300 3 / 1 — 0.7 mi 2026-03-30 72%
813 S Prairie Ave, Fairmont 56031 off market $1,050 3 / 1 — 0.7 mi 2022-07-25 72%
717 Willow St, Fairmont 56031 off market $1,025 3 / 1 — 0.9 mi 2024-01-29 71%
907 Albion Ave, Fairmont 56031 off market $1,225 3 / 1.5 1,330 0.5 mi 2024-02-20 65%
619 Burton Ln, Fairmont 56031 off market $1,200 3 / 2 1,100 1.2 mi 2022-02-07 64%
401 N Dewey St, Fairmont 56031 off market $950 2 / 1 1,100 1.4 mi 2026-08-13 64%

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

  • highPriced for lakefront, not for rent. Rents can't carry the ask. Based on: data: underwriting.cash_flow_monthly · AI review
  • mediumAsking is $175,190 above the price where cash flow breaks even ($223,810) at the default scenario. Based on: Derived: price $399,000 vs. break-even $223,810
  • mediumSome listing photos are virtually staged, so the true condition of those rooms is unclear. Listing says: Some of these pictures in this listing is virtually staged. · AI review
  • mediumOne brand-new boiler is mentioned, but it's unclear whether it serves both units or whether heat is shared and who pays. Listing says: Brand new, energy-efficient boiler system · AI review
  • mediumLakefront with a steep slope and retaining walls down to the water. Check erosion, shoreline and flood insurance costs. Based on: photo 1 · AI review
  • mediumDescription doesn't say the units are rented, give rents, or state lease terms. Listing says: Live in one, rent the other - or make the most of both! · AI review

Opportunities

  • Long time on market: room to negotiate. Based on: Listing data: 435 days on market
  • 435 days on market suggests the seller may accept a large cut. Based on: data: listing.days_on_market · AI review
  • House-hack option: live in one side, rent the other, to offset lake-view living costs. Listing says: Live in one, rent the other - or make the most of both! · AI review
  • Each unit has its own garage, which helps with tenant appeal. Listing says: This unit also comes with its own single-car garage. · AI review
  • No rent cap in Fairmont, so rents can rise freely if the market allows. Based on: data: underwriting.rent_rule · AI review

Questions for the agent

  • Are both units rented now? Get the rent roll, lease terms and 12 months of expenses.
  • Does the new boiler serve both units, and who pays heat, water and electric?
  • Which photos are virtually staged, and can I see real photos of those rooms?
  • Is the property rental licensed, and do the basement office and den count as legal bedrooms?
  • What are the seller's reasons for 435 days on market, and have there been price cuts or offers?
  • What are the annual taxes, and does the shoreline or boathouse need work or flood insurance?

Bottom line

Nice lake setting, but at $399K the rents lose about $930 a month, so it only works as a house-hack at a much lower price. AI-assisted summary

What the records say

Where each number comes from

Property tax / yr Listinglisting, tax year 2024. 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.$6,388
Insurance / yr Estimateestimate. from units, square feet and age; get a quote$2,766
Water, sewer, trash / mo Estimateestimate. $85/unit/mo, owner-paid$170
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. base rate8% / 8%

Price history Realtor.com

On the market since 2025-07-29 (434 days); down $130,900 (24.7%) from the first ask of $529,900; last sold for $465,000 on 2022-10-13.

DateEventPrice
Price changed$399,000
Relisted$420,000
Removed—
Price changed$468,500
Price changed$479,975
Price changed$500,000
Listed$529,900
Sold$465,000
Listed$469,000

From the listing Listing

Listed asduplex side x side
Property tax, 2024$6,388
CountyMartin
Parcel number231880370

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 Fairmont on rental licensing before you buy.