Real Estate Investing in Stony Brook, New York (11790)

Everything the listing leaves out — vacancy, rent trend, cap rate, landlord climate. All free.

Suffolk County • Population: 19,934 • Data updated: September 2026

☆ Watch this market Free account

Should you buy in 11790 (Stony Brook, NY)? Our answer, based on the numbers below.

🏠 For Homebuyers
MIXED
Grade C (62/100)

Mixed — home prices are stretched relative to local incomes. Run the math on your specific situation.

📈 For Investors
MIXED
3.0 / 5 (52/100)

A middle-of-the-road market. Workable, but the best opportunities may be nearby ZIPs rather than this one.

⚠️ Risks to Know
2 flags
  • Elevated vacancy: 8.1% vacancy may signal weakening demand.
  • Tenant-protective state: Landlord rating 1.0/5 — slower evictions, more regulations.

What’s happening in Stony Brook, NY (11790)?

Click any question — our AI will research it live from the web and show you sources.

✨ Live AI + Web Search
Want to ask your own questions? Upgrade to Pro for unlimited custom queries.
3.0/ 5

Investability

Overall investment appeal

3.0/ 5

Appreciation

Long-term value growth

4.0/ 5

Cashflow ROI

Rental yield potential

Avg Home Value $797,463
Avg Monthly Rent $4,621
1% Rule ✗ Does Not Meet
Median Income $145,545
% Renters 10.8%

Market Analysis: 11790 Stony Brook

ZIP 11790 inside Suffolk County looks affordable on the surface — median value of $797K — but the discount exists for reasons that a careful buyer should understand before committing.

For an experienced owner, 11790 can be a a strong candidate for hunting ground — but the discount at $797K reflects genuine risk that outside investors often underestimate.

Regionally, 11790 sits on the difficult end of the NY spectrum. The worth a close look for read — for disciplined operators — is that pricing reflects the difficulty.

The 11790 ZIP's population of 19,934 has faced economic pressure over the last decade. That pressure shows up in rent delinquency patterns that reports the need for careful underwriting.

appears to the ZIP is not uninvestable, but it is unforgiving. Section 8 landlords, local operators, and specialized value-add funds are the investor types that tend to succeed.

Explore the Data — Click a Tab Below
🏦 Current 30-yr Fixed Mortgage Rate: 6.76% as of Sep 10 Source: Freddie Mac PMMS

Here's what matters if you're considering buying a home in Stony Brook:

C+ Average
Buy Confidence Score: 66/100
Affordability
10/25
Appreciation
22/25
Stability
11/20
Timing
8/15
Rental backup
15/15
Affordability
Expensive
Homes cost 5.5× the median income
Value Trend
Rising (+9.1%)
How home values changed in the past year
Rental Backup
Strong
Could rent for $4,621/mo if you need to move
Market Conditions
BALANCED
Even conditions for buyers and sellers
Bottom Line: Mixed signals in this market. Research specific properties carefully and be prepared to negotiate.
🏠

Property Strategy for 11790

Which property type performs best in this market?

Best for Cash Flow
2BR
4.9% cap rate
Best for Appreciation
3BR
+8.3% 5yr CAGR
Best Overall Value
5BR
$168,348/bedroom
📊 Compare All Property Types →
Type Median Value Est. Rent Cap Rate 5yr CAGR $/Bedroom
2BR $503,691 $3,410 4.9% +6.7% $251,845
3BR $718,551 $4,420 4.4% +8.3% $239,517
4BR $783,762 $4,680 4.3% +7.9% $195,940
5BR $841,738 +7.3% $168,348

Market Trends

Home Value History (with trend line)

$828K$740K$652K$564K$476K$388KJul 2006Jul 2016Jul 2026

Rent History (with trend line)

$5,012$4,928$4,844$4,760$4,676$4,592Mar 2026May 2026Jun 2026

📊 How Does 11790 Compare?

Metric 11790 Stony Brook New York
Home Value $797,463 $398,732 $505,608
5-Year CAGR 5.9% 5.9% 6.6%
Avg Rent $4,621 $4,621 -
Cap Rate 4.5% 4.5% -
💡 Why Invest in 11790? Click to expand

With a 3/5 investability rating, this ZIP shows solid fundamentals for buy-and-hold investors.

📊 See where this ZIP ranks in our Best-of lists →
A great house in the wrong ZIP is still a bad deal — screen every market by cash flow & cap rate.
Open the Market Finder →
Free to search · investor plans from $19/mo

Landlord Ground Truth

Real numbers from people who own or manage rentals in ZIP 11790 (Stony Brook, NY). Anonymous, moderated, never written by AI.

Do you own or manage rentals in ZIP 11790 (Stony Brook, NY)?

~25 seconds · no account needed · your report is anonymous

Property managers serving Suffolk County

Manage rentals here? List your business →

CXA Management provides property management services. summary from their website

Unclaimed — is this your business? Claim it free

Eminent Properties Ltd is a property management company. summary from their website

Unclaimed — is this your business? Claim it free
Unclaimed — is this your business? Claim it free

Listings are shown for convenience — Repit doesn’t endorse or vet these companies. Ratings shown come only from email-verified visitors.

Investability
Good
Cap Rate
4.5%
Fair
5yr Growth
+5.9%
Moderate

📊 Market Snapshot

Home Value $797,463
Monthly Rent $4,621
Price-to-Rent 14.4:1
1% Rule ✗ Fails

💰 Return Metrics

Gross Yield 7.0%
Cap Rate 4.5%
5-Year IRR 10.4%

📈 Home Appreciation

1-Year +9.1% ▲
3-Year CAGR +5.5% ▲
5-Year CAGR +5.9% ▲
10-Year CAGR +5.7% ▲

🏠 Rent Trends

1-Year N/A
3-Year CAGR N/A
5-Year CAGR N/A
Negative Leverage — IRR / Tax Play Cap Rate: 4.5%  |  30yr Rate: 6.8%
Leverage reduces cash returns at current rates.

The current 30-yr mortgage rate (6.8%) exceeds the estimated cap rate (4.5%). Financing reduces your cash-on-cash return below the cap rate. Markets like this may still make sense as IRR plays — factoring in appreciation, depreciation, and a future refinance when rates drop.

Run an IRR Analysis →

⚠️ Risk Signals

Composite view of factors that can impact a ZIP's stability and your downside risk.

Vacancy
8.1%
Moderate risk
Landlord Climate
1.0/5
Protective
Value Trend (5yr)
+5.9%
Stable
Eviction process: Slow Rent control: Unfavorable

Demographics in 11790

Population: 19,934

💰 Median Household Income
$145,545
This area
$145,545
State
$86,376
USA
$74,580
🏠 Renter Occupied
10.8%
This area
10.8%
State
26.4%
USA
34.0%
💼 Unemployment Rate
3.1%
This area
3.1%
State
-24.2%
USA
3.7%
🎓 College Educated
67.3%
This area
67.3%
State
4.2%
USA
33.7%
👤 Median Age
23.3 years
This area
23.3 years
State
7.4 years
USA
38.9 years
🏚️ Vacancy Rate
8.1%
This area
8.1%
State
19.4%
USA
10.5%
👥 Population by Ethnicity
White 65.3%
Asian 24.2%
Other/Mixed 5.4%
Black/African American 5.0%
Hispanic/Latino 4.2%
👶 Under 18
14.0%
This area
14.0%
USA
22.0%
👴 65 and Over
14.2%
This area
14.2%
USA
17.3%
📊 Poverty Rate
0.7%
This area
0.7%
USA
11.5%

Crime & Safety

🚧

Crime & Safety Data Coming Soon

We're integrating comprehensive crime statistics including violent crime rates, property crime, and safety scores to help you make informed investment decisions.

Expected: Q1 2025

🎓 Schools in 11790

A+ Avg School Grade
2 Schools
11.8:1 Avg Class Size
$37,856 Avg Per Pupil

Schools in This ZIP Code

A+ Excellent

ROBERT CUSHMAN MURPHY JUNIOR HIGH SCHOOL

📚 07 – 09 High School
👥
672 Students
👨‍🏫
10.0:1 Class Size
💰
$37,856 Per Student
A+ Excellent

WILLIAM SIDNEY MOUNT ELEMENTARY SCHOOL

📚 Pre-K – 06 School
👥
514 Students
👨‍🏫
13.6:1 Class Size
💰
$37,856 Per Student

Nearby Schools (5 more)

Schools in adjacent ZIP codes that may serve this area

A+ Excellent

ARROWHEAD ELEMENTARY SCHOOL

📚 Pre-K – 06 School
📍 62 ARROWHEAD LN, EAST SETAUKET
👥
565 Students
👨‍🏫
11.0:1 Class Size
💰
$37,856 Per Student
A+ Excellent

MILLS POND ELEMENTARY SCHOOL

📚 K – 05 Elementary
📍 246 MORICHES RD, ST JAMES
👥
357 Students
👨‍🏫
11.4:1 Class Size
💰
$32,130 Per Student
A+ Excellent

NESAQUAKE MIDDLE SCHOOL

📚 06 – 08 Middle
📍 479 EDGEWOOD AVE, SAINT JAMES
👥
454 Students
👨‍🏫
9.2:1 Class Size
💰
$32,130 Per Student
A+ Excellent

PAUL J GELINAS JUNIOR HIGH SCHOOL

📚 07 – 09 High School
📍 25 MUD RD, SETAUKET
👥
651 Students
👨‍🏫
10.6:1 Class Size
💰
$37,856 Per Student
A+ Excellent

SAINT JAMES ELEMENTARY SCHOOL

📚 K – 05 Elementary
📍 580 LAKE AVE, SAINT JAMES
👥
464 Students
👨‍🏫
11.5:1 Class Size
💰
$32,130 Per Student
About Repit School Scores

Traditional school ratings rely heavily on standardized test scores, which often reflect family income more than school quality. Repit takes a different approach.

We evaluate schools based on factors that research shows actually impact educational outcomes:

  • Class Size — Smaller classes mean more individual attention
  • School Funding — Resources available for programs, staff, and facilities
  • Community Factors — Neighborhood characteristics that influence student success
  • School Environment — Size, type, and structure

Scores are updated annually using federal education data.

🎓 Nearby Colleges & Universities

8 Nearby 2,927 Off-Campus Students
B+
Stony Brook University
25,865 students · 0.6 mi
C
Suffolk County Community College
20,053 students · 5.5 mi
C+
Long Island Beauty School-Hauppauge
119 students · 6.6 mi
C
Access Careers-Islandia
314 students · 7.8 mi
C
New York Institute of Beauty
241 students · 7.9 mi
C+
Eastern Suffolk BOCES
31 students · 11.2 mi
C+
Western Suffolk BOCES
274 students · 11.5 mi
C
Eastern Suffolk BOCES
275 students · 11.8 mi

Investor Insight: With 2,927 students living off-campus nearby, this area has strong rental demand from the college population.

Frequently Asked Questions

What do rentals go for in Stony Brook, NY?

Rent in Stony Brook, NY is around $4,621/mo. The resulting rent-to-value relationship with $797K pricing is reasonable for most investor models.

What is the best play in Stony Brook, NY?

A careful cash-flow rentals with hands-on management strategy Stony Brook, NY best. The market produces measured results for that approach at the $797K price point.

Is Stony Brook, NY a smart market for rental property?

Investors tracking Stony Brook, NY will find a 3.0/5 rating supported by $797K median home values and $4,621/mo rents. That profile suits long-term holders targeting steady returns.

Is Stony Brook, NY suited for a house hack?

Stony Brook, NY is a a challenging market for house hackers. FHA or conventional owner-occupant buyers find the $797K price point reasonable to enter.

How tight is the rental market in Stony Brook, NY?

Stony Brook, NY vacancy trends elevated. Investors running standard buy-and-hold plays see reasonable downtime between tenants.

You know 11790 now. You don’t know where it ranks.

This page stays free — all of it. What one page can’t tell you is how 11790 compares to every other market. Investor ($19/mo) screens every U.S. ZIP by cap rate, the 1% rule, vacancy and landlord climate, and exports your shortlist.

Compare Plans

How 11790 ranks in New York-Newark-Jersey City, NY-NJ-PA

Every ZIP in this metro, ranked. Free.

Cash Flow → Appreciation → Affordable →
🤖

AI Market Advisor

Ask questions about investing in 11790 (Stony Brook)

Loading...

Community Ratings

What people who’ve spent time here actually say. Not paid reviews.

Be the first to rate 11790 (Stony Brook, NY).

It takes 30 seconds. No signup. Your rating helps everyone who comes here after you.