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Updated Duplex with Solar Array
For Sale
$375,000

840 Randolph Ave, Saint Paul, MN 55102

Two distinct residences combine original character, modern updates, and flexible rental use in a well-maintained duplex.

Property Size1,688 SF
Price / SF$222.16
Days on Market10

Property Features for 840 Randolph Ave

General Information

Standard status Active
Size 1,688 SF
Property subtype Residential Income

Units

Unit Mix 1 x 3BR/2BA, 1 x 1BR
Multifamily Units 2

Taxes and HOA fees

Annual Taxes $4,535

Amenities

solar array

Building Details

Year Built 1909
Buildings 1
Listing Agency: Edina Realty, Inc.
Listed By: Jessie C. McClary, GRI
Source: Exprealty
Added: Jul 30 Changed: Aug 7 Last Checked: Aug 8 at 9:53AM

Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of Edina Realty, Inc.

Investment Insights

Based on property information with market context.

Located at 840 Randolph Ave in Saint Paul’s West 7th area, this 1909 duplex pairs a spacious three-bedroom main residence with a separate one-bedroom apartment upstairs. The primary unit includes living and dining rooms, two baths, laundry, basement storage, and workspace. Original woodwork and a built-in buffet remain, while flooring, a bathroom, appliances, the roof, and mechanical systems have been updated. Separate furnaces and electrical panels serve the two residences.

A 16-panel solar array helps reduce energy costs, and the garage—built within the last 5 years—includes a 240V outlet. The property is near Mucci’s Italian, A-Side Public House, Bay Street Burger Dive, Palace Park, and the Mississippi River. The upper apartment is suited to traditional, furnished, or short-term rental use as described.

Key Highlights

  • 1909 duplex with a 3‑bedroom main residence and separate 1‑bedroom apartment
  • 16‑panel solar array designed to reduce energy costs
  • Main unit includes 2 baths, laundry, basement storage, and workspace

Financial Insights

Estimated NOI and Cap Rate

NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$24,663
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
6.58%
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$493,260 $493.3K
Cap Rate 7%
$352,329 $352.3K
Cap Rate 9%
$274,033 $274.0K
Market Conditions
NOI Build-Up for 1,688 SF Vacancy — income lost from leasable area expected to sit empty during the year, subtracted from gross rent. EGI (Effective Gross Income) — gross rent minus vacancy losses, the realistic income before paying operating costs. OpEx (Operating Expenses) — recurring costs to operate the property (property tax, insurance, utilities, maintenance, management); excludes financing and capital improvements. NOI (Net Operating Income) — income a property generates after operating costs but before financing and taxes.
Gross rent
$37.5K $22.20/SF
− Vacancy
−$2.2K −$1.33/SF
EGI
$35.2K $20.87/SF
− OpEx
−$10.6K −$6.26/SF
NOI
$24.7K $14.61/SF
Area
Dakota County, MN
Vacancy
5.98%
Lease Rate
$22.20 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$493,260
Cap Rate 7%
$352,329
Cap Rate 9%
$274,033

Alternative Uses

Best Use
Multifamily LT 5
$352.3K
$308.3K – $411.1K (±1% cap)
NOI $24,663 @ 7.0% cap · market cap 6.58%
Second Best
Apartment 5plus
$323.6K
$283.2K – $377.5K (±1% cap)
NOI $22,652 @ 7.0% cap · market cap 6.04%
Theoretical Best
Healthcare Medical
$415.4K
$363.5K – $484.6K (±1% cap)
NOI $29,077 @ 7.0% cap · market cap 7.75%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Duplexes

Suggested Use

Top Pick Parking Lot & Garage HVAC Service Building Supply Accounting Firm Plumbing Service Furniture & Home Goods

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

715
Businesses Nearby

Demographics for 55102, MN

20,355
Population
11,582
Households
1.8
Avg Household Size
39
Median Age
55%
College-Educated
96%
High-School Grad
3.3 sq mi
ZIP Area
6,168
Density / Sq Mi
$74,143
Median Household Income
$54,042
Median Earnings
$1,295
Median Rent
$280,400
Median Home Value

Market

Vacancy Rate% for Multifamily in Midwest region

6.5% 2022
7.5% 2023
7.8% 2024
8% 2025
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Frequently Asked Questions

What type of property is this?
Duplex - Two distinct residences combine original character, modern updates, and flexible rental use in a well-maintained duplex.
Where is this duplex located?
The property is located at 840 Randolph Ave Saint Paul, MN.
What is the asking price?
The asking price for this property is $375,000.
What are key features of this property?
This property features: 1909 duplex with a 3‑bedroom main residence and separate 1‑bedroom apartment; 16‑panel solar array designed to reduce energy costs; Main unit includes 2 baths, laundry, basement storage, and workspace
More about this property
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