84 Riviera Dr

Mastic, NY 11950

$399,999C

4 bd · 1.0 ba · 1,270 sqft · Built 1940 · SingleFamily · Active · 12 DOM

Cashflow @ list (25.0% down · 7.5%)

• Estimated rent: $3,679/mo
• Mortgage (P&I): −$2,098
• Tax + insurance: −$760
• HOA: −$0
• Vac / Maint / Mgmt: −$773
• Net cashflow: $49/mo
• Annual: $585/yr
• Cap rate: 7.82%
• Cash-on-cash: 5.46%
• DSCR: 1.24
• 1% rule: 0.92%
• Cash to close: $112,000

Investor read

• This is a 4-bed/1.0-bath single-family listed at $400k.
• At list price, monthly cash flow is $49 ($585/yr) — positive.
• The deal already cash-flows at list — no discount required.
• To meet the 1% rule (rent ≥ 1% of price), the offer needs to be $368k (8.0% below list).
• Only 12 days on market — expect competitive offers; lowballing is unlikely to land.
• Recommended offer: $368k (8.0% below list) — sets the bar for 1% rule.
• Local home prices are declining (-3.0%/yr); year-one equity from $3k of loan paydown is wiped out by about $12k of value loss. Plan a longer hold.
• Location reads 63/100 on livability (#816 in NY) — a middle-class / working-renter tenant base. Strengths: employment A+, housing A+, health & safety B; Watch: crime D, amenities F, commute F.
• William Floyd Union Free School District (suburban): math 48% / reading 57% proficiency, ranked #309 of 590 in NY (top 52%) — acceptable for families but not a draw, mixed tenant base, ~2y average lease.
• Zoned schools: Moriches Elementary School (math 52% / reading 57%, grade C, #908 of 2,108 statewide, top 46%, 822 students, 57% FRL); William Floyd Middle School (math 36% / reading 47%, grade F, #394 of 729 statewide, top 55%, 1,053 students, 54% FRL); William Floyd High School (math 65% / reading 87%, grade A-, #616 of 1,100 statewide, top 57%, 3,013 students, 54% FRL).
• Watch-outs: flood insurance adds $460/mo; built in 1940 — expect roof / HVAC / electrical / plumbing capex.
• Market conditions: 102 active listings in the ZIP; 4 comparable units currently listed for rent nearby; rentals at typical pace (median 27d on market — plan ~3-4 weeks tenant-placement turnaround); 1,366 units permitted in Suffolk County in 2024 (216 in 5+ unit buildings).
• Suffolk County population projected to shrink 5% by 2050 — rents likely to lag national; underwrite the cash flow, not the appreciation.
• 2 sale attempts with the ask held roughly flat each time — persistent listings suggest the price (not the market) is what's stuck; bring a comps-based counter.
• Current owner paid $102k; list at $400k implies a 290% gain — meaningful room to come down on a strong offer.
• Climate carrying-cost: in FEMA flood zone AE (mandatory federal flood insurance); severe wind risk, 80% chance of damaging wind over 30y — expect insurance premiums to compound above CPI over the hold.
• Cap rate 7.8% vs local median 4.7% in Mastic — top-decile yield for the area; either an underpriced asset or a hidden risk that comps aren't pricing in. Stress-test before assuming the spread holds.

Questions for listing agent

• Built in 1940 — when were the roof, HVAC, electrical panel, plumbing, and water heater last replaced?
• What's the actual annual flood-insurance premium (NFIP or private), and is the property in a SFHA with mandatory coverage?
• Is there a deadline driving the sale (1031 exchange, divorce, estate, relocation)? That informs how much negotiation room exists.
• Schools are F-rated, which usually means shorter tenancies and higher turnover. Who's the typical renter profile here, and what's been the actual vacancy rate?
• Crime grade is D in this area — have there been break-ins, vandalism, or insurance claims at this property in the last 3 years? What carrier currently insures it and at what premium?
• What's the average days-on-market for RENTAL listings here right now (not sales)? A rising rental-DOM trend means longer vacancies and softer asking-rent achievability than the comps imply.
• What's the recent tenant-quality profile in this submarket — average credit score on applications, eviction rate, late-payment / NSF rate, and stable-employment percentage? A property-management company in the area should have these aggregated.
• How much new for-sale + rental construction is in the pipeline within 1–3 miles? Heavy new supply typically softens prices + rents 12–24 months out; constrained supply supports both.