Building Details

Building Size 3,593 SF

Year Built 1928

Buildings 2

Listing Agency: Lynx Realty Inc

Listed By: Minoo Pajounia Show Phone

Source: Luxuryhomeny

Added: Sep 15 Changed: Sep 17 Last Checked: Sep 17 at 2:19AM

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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 Lynx Realty Inc

Investment Insights

Based on property information with market context.

This duplex property combines a renovated five-bedroom residence with a detached two-bedroom cottage. The main home features a first-floor primary bedroom with a renovated bathroom and walk-in closet, plus an open living area centered around a stone fireplace and a chef’s kitchen with upgraded appliances. Four additional bedrooms and two bathrooms are located upstairs, while the attic offers flexible space and built-in storage. A finished basement includes a professional gym with direct access to the landscaped garden.

The detached cottage provides a separate living arrangement with a bright kitchen, skylight, two bedrooms, one and a half bathrooms, and its own garden setting. Built in 1928, the property offers two distinct residential spaces and is described as fully rentable.

Key Highlights

• Renovated five‑bedroom main residence
• Detached cottage with two bedrooms and 1.5 bathrooms
• Main home includes a first‑floor primary suite

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

$68,451

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

3.04%

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%

$1,369,020 $1.4M

Cap Rate 7%

$977,871 $977.9K

Cap Rate 9%

$760,567 $760.6K

Market Conditions

NOI Build-Up for 3,593 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

$103.5K $28.80/SF

− Vacancy

−$5.7K −$1.58/SF

EGI

$97.8K $27.22/SF

− OpEx

−$29.3K −$8.16/SF

NOI

$68.5K $19.05/SF

Area

Nassau County, NY

Vacancy

5.50%

Lease Rate

$28.80 /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%

$1,369,020

Cap Rate 7%

$977,871

Cap Rate 9%

$760,567

Alternative Uses

Best Use

Multifamily LT 5

$977.9K

$855.6K – $1.14M (±1% cap)

NOI $68,451 @ 7.0% cap · market cap 3.04%

Second Best

Apartment 5plus

$915.6K

$801.1K – $1.07M (±1% cap)

NOI $64,090 @ 7.0% cap · market cap 2.85%

Theoretical Best

Specialty Retail

$2.38M

$2.08M – $2.77M (±1% cap)

NOI $166,293 @ 7.0% cap · market cap 7.39%

Zoning and permitted uses should be independently verified with authorities.

Property Analytics

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Current Use

Diamond Chimney/DryerVent Cleaning ... General Contractor

Suggested Use

Top Pick Real Estate Agency (Bike/Boat/Book/etc) Store Garden Center Plumbing Service Florist Storage Facility

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

1,136

Businesses Nearby

Explore this area Business Placement

Demographics for 11577, NY

12,695

Population

4,453

Households

2.9

Avg Household Size

44

Median Age

68%

College-Educated

96%

High-School Grad

3.0 sq mi

ZIP Area

4,232

Density / Sq Mi

$183,233

Median Household Income

$91,292

Median Earnings

$2,037

Median Rent

$945,000

Median Home Value

Market

Vacancy Rate% for Multifamily in Northeast region

4% 2022

4.6% 2023

5.3% 2024

5.6% 2025

Questions? Ask Rey

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What type of property is this? Where is this duplexes located? What is the asking price? Find similar properties What are key features of this property?

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Renovated Duplex With Detached Cottage

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Frequently Asked Questions

What type of property is this?

Duplex - Includes a renovated primary residence and a separate cottage with private outdoor space.

Where is this duplex located?

The property is located at 77 Jefferson Avenue Roslyn Heights, NY.

What is the asking price?

The asking price for this property is $2,249,000.

What are key features of this property?

This property features: Renovated five‑bedroom main residence; Detached cottage with two bedrooms and 1.5 bathrooms; Main home includes a first‑floor primary suite