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Remodeled Triplex with Separate Utilities
For Sale
$699,900

3600 1st Ave S, St Petersburg, FL 33711

Fully updated three-unit layout with separate addresses, utilities, and extensive parking.

Property Size2,328 SF
Price / SF$300.64
Days on Market77

Property Features for 3600 1st Ave S

General Information

Standard status Active
Size 2,328 SF
Property subtype Residential Income

Taxes and HOA fees

Annual Taxes $6,175
Listing Agency: STAR BAY REALTY CORP.
Listed By: Lukas Vanagaitis · License #3443636
Source: Exprealty
Added: May 29 Changed: Aug 4 Last Checked: Aug 12 at 10:26AM

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 STAR BAY REALTY CORP.

Investment Insights

Based on property information with market context.

This 2,328-square-foot triplex was built in 1960 and remodeled in 2026. The property includes a two-bedroom, one-bath unit and a one-bedroom, one-bath accessory suite on the lower level, plus a one-bedroom, one-bath unit upstairs. Renovations include a new roof, full electrical rewiring, new AC systems, hurricane-impact windows, plumbing improvements, new water heaters, and updated interior finishes. The renovation work is permitted.

Located at 3600 1st Ave S. and 109 36th St. S., the property has two separate addresses and separate utilities. It occupies a corner lot with substantial parking and provides quick access to downtown and the beaches. The property is outside a flood zone, has no HOA, and has no reported hurricane damage.

Key Highlights

  • Triplex with 2,328 SF of building area
  • Remodeled in 2026 with permitted renovations
  • Three units: 2‑bedroom, 1‑bath; 1‑bedroom, 1‑bath suite; and 1‑bedroom, 1‑bath

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
$27,173
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
3.88%
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%
$543,460 $543.5K
Cap Rate 7%
$388,186 $388.2K
Cap Rate 9%
$301,922 $301.9K
Market Conditions
NOI Build-Up for 2,328 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
$41.6K $17.88/SF
− Vacancy
−$2.8K −$1.21/SF
EGI
$38.8K $16.67/SF
− OpEx
−$11.6K −$5.00/SF
NOI
$27.2K $11.67/SF
Area
Pinellas County, FL
Vacancy
6.74%
Lease Rate
$17.88 /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%
$543,460
Cap Rate 7%
$388,186
Cap Rate 9%
$301,922

Alternative Uses

Best Use
Multifamily LT 5
$388.2K
$339.7K – $452.9K (±1% cap)
NOI $27,173 @ 7.0% cap · market cap 3.88%
Second Best
Apartment 5plus
$305.9K
$267.6K – $356.9K (±1% cap)
NOI $21,411 @ 7.0% cap · market cap 3.06%
Theoretical Best
Office A
$605.5K
$529.8K – $706.5K (±1% cap)
NOI $42,387 @ 7.0% cap · market cap 6.06%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Jessica Burgan Physician David B. Preston ... Alternative Medicine Practice Dr. Phillip Coleman Alternative Medicine Practice Dr. Brittany Lewis Alternative Medicine Practice Dr. Kenneth Jenkins Alternative Medicine Practice

Suggested Use

Top Pick Tech Support Center (Bike/Boat/Book/etc) Store Florist Computer & Electronic Repair Butcher Electrical Service

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

Location Intelligence

Trade Area within ½ mile

1,936
Businesses Nearby

Demographics for 33711, FL

20,121
Population
9,522
Households
2.1
Avg Household Size
41
Median Age
32%
College-Educated
96%
High-School Grad
4.7 sq mi
ZIP Area
4,281
Density / Sq Mi
$68,295
Median Household Income
$27,156
Median Earnings
$1,819
Median Rent
$253,100
Median Home Value

Market

Vacancy Rate% for Multifamily in South region

8.5% 2022
10.2% 2023
11.4% 2024
11.3% 2025
Rey
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Frequently Asked Questions

What type of property is this?
Triplex - Fully updated three-unit layout with separate addresses, utilities, and extensive parking.
Where is this triplex located?
The property is located at 3600 1st Ave S St Petersburg, FL.
What is the asking price?
The asking price for this property is $699,900.
What are key features of this property?
This property features: Triplex with 2,328 SF of building area; Remodeled in 2026 with permitted renovations; Three units: 2‑bedroom, 1‑bath; 1‑bedroom, 1‑bath suite; and 1‑bedroom, 1‑bath
More about this property
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