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3712 Porter Cir #35
B Composite 70.85
Why this score? — see what drove the B grade

The composite is a weighted blend of 9 inputs, each scored 0–100. Each bar is that input's sub-score; the figure is the points it added to the 100-point composite (weight × sub-score).

  • Cash flow +30.0/30.0
  • 1% rule +10.0/10.0
  • DSCR +10.0/10.0
  • Appreciation +10.0/10.0
  • Schools +3.4/10.0
  • Rent growth +2.5/5.0
  • Livability +2.5/5.0
  • Condition / age +2.5/5.0
  • ARV discount +0.0/15.0

$195,000

3712 Porter Cir #35 · Bethel Island, CA 94511
3 bd · 2.0 ba · 960 sqft · Manufactured · 130 Days on market
Built 1979 Est $142k · 37% over ↓ 2% since listing

🖨 Deal sheet (PDF) 📄 Offer letter ✓ Due diligence

Listing remarks MLS

Great opportunity to own a home in the Heart of the Delta, close to Restaurants, Water Sports, Fishing, and Boating with over 1000 miles of waterways to explore! Home has been very well maintained with recently installed new carpets throughout, stainless steel appliances, laundry hookups, quaint porch to relax in the evenings. Come take a look it will not last long.

Key facts

  • Private outdoor area
  • Move in ready
  • Multiple marinas

Tags

MOVE IN READYPRIVATE OUTDOOR AREANEWLY INSTALLED HVAC SYSTEMEASY ACCESS TO LOCAL AMENITIESMULTIPLE MARINASWATERFRONT RESTAURANTS

Property features AI

Finance

  • HOA & community: Pets allowed (cats and dogs); Community clubhouse; Community pool; Community laundry; Located in THE WILLOWS park

Exterior

  • Parking: Carport (2+ spaces)
  • Utilities: Public water; Public sewer
  • Home design: Manufactured in park (mobile home); Double wide; Skyline model
  • Construction: Wood siding
  • Exterior features: Covered patio/porch; Back yard; Front yard; Side yard; Fenced; Rectangular lot

Interior

  • Kitchen: Stone counters; Dishwasher; Electric range / cooktop; Disposal; Refrigerator
  • Bedrooms: 3 bedrooms
  • Flooring: Laminate; Carpet
  • Bathrooms: 2 bathrooms (2 full)
  • Heating & cooling: Forced air heating; Central air conditioning
  • Interior features: Utility room; Main entry
  • Laundry & utility: Washer/dryer hookups (hookups only)

Neighborhood map

Property Rental comp Retail Transit Schools Stadiums Fortune 500 · Circle radius: 3.0 mi
Loading POIs…

What this means for you Summary

Snapshot

  • This is a 3-bed/2.0-bath manufactured listed at $195k.

Deal economics

  • At list price, monthly cash flow is $718 ($9k/yr) — positive.
  • The deal already cash-flows at list — no discount required.
  • Meets the 1% rule at list price ($3k rent vs $195k).
  • Recommended offer: $172k (12.0% below list) — sets the bar for market timing.
  • Cap rate 13.3% vs local median 2.7% in Bethel Island — 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.

Location & tenants

  • Location reads 49/100 on livability (#1,166 in CA) — a working-class tenant base; expect higher turnover. Strengths: crime A-; Watch: employment C-, schools F, amenities F.
  • Oakley Union Elementary (suburban): math 26% / reading 40% proficiency, ranked #837 of 1,400 in CA (top 60%) — families likely to look elsewhere, expect single-tenant / working-renter base with shorter leases.
  • Market conditions: 78 active listings in the ZIP; 2,169 units permitted in Contra Costa County in 2024 (896 in 5+ unit buildings).

Forward outlook

  • In year one you build about $21k of equity ($1k loan paydown + $20k appreciation (10.0% local appreciation)).
  • Contra Costa County population projected at +26% by 2050 — long-run rental-demand tailwind backs the buy-and-hold thesis.
  • At projected returns (10.0% appreciation + 3.0% rent growth), your $55k cash investment doubles in ~2 years — after that, you're playing with house money.
  • By year 2, paydown + projected appreciation supports a ~$34k cash-out refi (75% LTV) — recoverable capital for the next deal without selling this one.

Negotiation context

  • It's been on market 130 days — a 12% lower offer ($172k) is reasonable based on typical stale-listing flexibility.
  • 3 sale attempts since 4y ago; this cycle's ask has dropped $15k (7%) from the opening price — seller is motivated, your offer sets the floor, not the list.
  • Current owner paid $145k; 34% above their basis — modest negotiation headroom, anchor on the comps not their cost.

Risks & watch-outs

  • Watch-outs: flood insurance adds $427/mo.
  • Climate carrying-cost: in FEMA flood zone AE (mandatory federal flood insurance); extreme-heat days projected 7→14/yr by 2055 (HVAC capex compounding) — expect insurance premiums to compound above CPI over the hold.
Recommended offer $171,600 (12.0% below list)

Questions for the listing agent

  1. It's been on market 130 days. Have you received any prior offers? Is the seller open to a 12% concession, seller financing, or rate buy-down credit?
  2. Built in 1979 — when were the roof, HVAC, electrical panel, plumbing, and water heater last replaced?
  3. What's the actual annual flood-insurance premium (NFIP or private), and is the property in a SFHA with mandatory coverage?
  4. Why hasn't it sold? Are there any deal-killer items the seller is aware of (foundation, flood, title, zoning, code violations)?
  5. Is there a deadline driving the sale (1031 exchange, divorce, estate, relocation)? That informs how much negotiation room exists.
  6. 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?
  7. 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.
  8. 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.
  9. 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.

Investment metrics

1% rule
1.62%
Cap rate
13.34%
Cash-on-cash
25.15%
DSCR
2.12
GRM
5.2

CMA / ARV

ARV (on-the-fly)
$142,080
Comps found
6
Show comp detail 6 sales within ~0.75 mi
Address Dist Beds/Ba Sqft Sold Price $/sf Match
343 Alcott Ct 0.09mi 2/2.0 (-1) 1,040 (+8%) 4mo $178,000 $171 74
343 Alcott Ct #175 0.09mi 2/2.0 (-1) 1,040 (+8%) 10mo $35,000 $34 69
312 Alcott Ct 0.02mi 2/2.0 (-1) 1,040 (+8%) 21mo $145,000 $139 62
312 Alcott Ct #166 0.02mi 2/2.0 (-1) 1,040 (+8%) 21mo $145,000 $139 62
3605 Hawthorne Dr #114 0.11mi 2/2.0 (-1) 1,100 (+15%) 8mo $162,500 $148 59
3609 Hawthorne Dr #113 0.15mi 2/1.0 (-1) 840 (-12%) 23mo $150,000 $179 44

Match score weights: distance 35% · size 25% · config 20% · recency 20%. Top-matched comps best support the ARV.

Projected returns pro-forma

10.0% appreciation · 3.0% rent growth · sell at horizon

5-year hold
IRR
36.0%
Equity multiple
3.79×
Total profit
$152,231
Equity at exit
$175,671
10-year hold
IRR
31.0%
Equity multiple
8.56×
Total profit
$412,957
Equity at exit
$378,842

Cash invested: $54,600 (down + closing). Projections, not guarantees.

Landlord ↔ Tenant lean methodology

Overall (STATE)
18 Strongly Tenant-Friendly
State California
18 Strongly Tenant-Friendly · D+13
County
— inherits STATE
City
— inherits STATE
AB1482 statewide rent cap (10% + CPI). Cities (SF/LA/Berkeley) layer stricter rules. Just-cause statewide.

ZIP-level market 94511

Home prices YoY
4.6%
Active inventory
78
Price-to-rent
5.2×

Monthly cashflow live

Estimated rent
$3,154 medium interval (Pro) →
Mortgage (P&I)
$1,023
Tax est. 1.5%
$244 /mo · $2,925/yr
Insurance
$81
Flood insurance flood zone
−$427 /mo · $5,118/yr
HOA
$0
Vacancy / Maint / Mgmt
$662
Net cashflow
$718

Break-even live

Break-even rent $2,246
Max offer price $195,000
Occupancy floor 72%

Sensitivity live

Price -10% $853 -5% $785 +0% $718 +5% $650 +10% $583
Rent -10% $469 -5% $593 +0% $718 +5% $842 +10% $967
Rate -1.0pp $816 -0.5pp $767 base $718 +0.5pp $667 +1.0pp $616

UW: 25.0% down · 7.5% · 30yr · 1.5% tax · 5.0% vac · 8.0% maint · 8.0% mgmt

Financing live

Cash to close

Down payment
$48,750
Closing costs
$5,850
Reserves months
Total cash needed

Loan-product check · same deal, 3 products live

Conventional

25% down · 7.5% · 30yr

Down + closing
Monthly P&I
Monthly cashflow
DSCR
Eligible?

Personal DTI + credit; lowest rate.

DSCR

20% down · 8.5% · 30yr

Down + closing
Monthly P&I
Monthly cashflow
DSCR
Eligible?

No personal income docs; deal must DSCR.

Hard money

10% down · 12.0% · 12mo

Down + closing
Monthly P&I
Monthly cashflow
DSCR
Eligible?

Short-term bridge; refi at stabilization.

Listing history 25 events

  1. 2026-06-18
    days on market $195,000 Active 130 DOM
  2. 2026-06-17
    days on market $195,000 Active 129 DOM
  3. 2026-06-16
    days on market $195,000 Active 128 DOM
  4. 2026-06-15
    days on market $195,000 Active 127 DOM
  5. 2026-06-13
    days on market $195,000 Active 125 DOM
  6. 2026-06-13
    days on market $195,000 Active 124 DOM
  7. 2026-06-09
    days on market $195,000 Active 121 DOM
  8. 2026-06-08
    days on market $195,000 Active 120 DOM
  9. 2026-06-07
    days on market $195,000 Active 119 DOM
  10. 2026-06-04
    days on market $195,000 Active 116 DOM
  11. 2026-06-03
    days on market $195,000 Active 115 DOM
  12. 2026-06-02
    days on market $195,000 Active 114 DOM
  13. 2026-06-01
    days on market $195,000 Active 113 DOM
  14. 2026-05-31
    days on market $195,000 Active 112 DOM
  15. 2026-05-07
    price $195,000
  16. 2026-02-27
    price $199,000
  17. 2026-02-08
    listed $210,000 Active
  18. 2022-12-28
    soldstatus $145,000 Sold 369-char remark
    Show marketing remark (369 chars)

    Great opportunity to own a home in the Heart of the Delta, close to Restaurants, Water Sports, Fishing, and Boating with over 1000 miles of waterways to explore! Home has been very well maintained with recently installed new carpets throughout, stainless steel appliances, laundry hookups, quaint porch to relax in the evenings. Come take a look it will not last long.

  19. 2022-11-27
    status Pending 369-char remark
    Show marketing remark (369 chars)

    Great opportunity to own a home in the Heart of the Delta, close to Restaurants, Water Sports, Fishing, and Boating with over 1000 miles of waterways to explore! Home has been very well maintained with recently installed new carpets throughout, stainless steel appliances, laundry hookups, quaint porch to relax in the evenings. Come take a look it will not last long.

  20. 2022-11-15
    status Back On Market 369-char remark
    Show marketing remark (369 chars)

    Great opportunity to own a home in the Heart of the Delta, close to Restaurants, Water Sports, Fishing, and Boating with over 1000 miles of waterways to explore! Home has been very well maintained with recently installed new carpets throughout, stainless steel appliances, laundry hookups, quaint porch to relax in the evenings. Come take a look it will not last long.

  21. 2022-11-11
    status Pending - Show for Backups 369-char remark
    Show marketing remark (369 chars)

    Great opportunity to own a home in the Heart of the Delta, close to Restaurants, Water Sports, Fishing, and Boating with over 1000 miles of waterways to explore! Home has been very well maintained with recently installed new carpets throughout, stainless steel appliances, laundry hookups, quaint porch to relax in the evenings. Come take a look it will not last long.

  22. 2022-10-11
    price $169,000 369-char remark
    Show marketing remark (369 chars)

    Great opportunity to own a home in the Heart of the Delta, close to Restaurants, Water Sports, Fishing, and Boating with over 1000 miles of waterways to explore! Home has been very well maintained with recently installed new carpets throughout, stainless steel appliances, laundry hookups, quaint porch to relax in the evenings. Come take a look it will not last long.

  23. 2022-09-17
    price $179,000 369-char remark
    Show marketing remark (369 chars)

    Great opportunity to own a home in the Heart of the Delta, close to Restaurants, Water Sports, Fishing, and Boating with over 1000 miles of waterways to explore! Home has been very well maintained with recently installed new carpets throughout, stainless steel appliances, laundry hookups, quaint porch to relax in the evenings. Come take a look it will not last long.

  24. 2022-09-09
    price $195,000 369-char remark
    Show marketing remark (369 chars)

    Great opportunity to own a home in the Heart of the Delta, close to Restaurants, Water Sports, Fishing, and Boating with over 1000 miles of waterways to explore! Home has been very well maintained with recently installed new carpets throughout, stainless steel appliances, laundry hookups, quaint porch to relax in the evenings. Come take a look it will not last long.

  25. 2022-08-11
    listed $199,000 New 369-char remark
    Show marketing remark (369 chars)

    Great opportunity to own a home in the Heart of the Delta, close to Restaurants, Water Sports, Fishing, and Boating with over 1000 miles of waterways to explore! Home has been very well maintained with recently installed new carpets throughout, stainless steel appliances, laundry hookups, quaint porch to relax in the evenings. Come take a look it will not last long.

ⓘ Source: listings_history table (triggers on properties + properties_extension) + one-shot backfill from property_details.listing_events for pre-trigger history.

Climate risk First Street

  • 🌊 Flood 1/10 Low FEMA zone AE · 0% chance over 30 yrs
  • 🔥 Wildfire 4/10 Moderate
  • 🌡 Heat 6/10 Major 7 d/yr ≥101°F today · 14 d/yr by 30 yrs out
  • 💨 Wind 1/10 Low
  • 🫁 Air quality 10/10 Extreme 21 unhealthy d/yr today · 23 by 30 yrs out

Nearby sold comps map

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Walkable amenities ~0.75 mi

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Taxation est. · year 1

Rental income
$37,853
− Mortgage interest
−$10,923
− Property taxes
−$2,925
− Insurance
−$6,094
− Repairs & maintenance
−$3,028
− Management
−$3,028
− Depreciation
−$5,673
Taxable income
$6,182
combined federal + state — saved on this device
Est. tax owed @ 24.0%
−$1,484
After-tax cash flow
$7,130/yr

For passive investors: Depreciation is non-cash, so a rental often shows a tax loss while cash-flowing — sheltering income. Rental losses are passive: they offset passive income freely, and up to $25,000/yr can offset ordinary (W-2) income if you actively participate and your MAGI is under $100k (phasing out to $0 by $150k); unused losses carry forward. On sale, claimed depreciation is recaptured at up to 25%, and gains may owe capital-gains tax (a 1031 exchange can defer both). Figures are a year-1 estimate at your 24.0% rate — not tax advice; consult a CPA.

Schools (NCES district)

District
Oakley Union Elementary
NCES district ID
0628080
Math proficiency
26% ▬ 0.00%
Reading proficiency
40% ▲ 1.00%
Median HH income
$77,903
Composite
34.04/100
National rank
#10301
State rank
#837 of 1400 in CA

Livability — Bethel Island

Score
49/100
State rank
#1166
US rank
#25883

Category grades

Amenities F Commute F Cost of living F Crime A- Employment C- Housing C Health & safety F User ratings A

Schools grade is shown separately in the Schools card above.

Census & demographics

Census place
Bethel Island, CA
City population
2,144
Population (ZIP)
2,144

Population outlook (Contra Costa County) Hauer SSP2

Today (2025)
1,287,720 people
By 2030
1,364,937 · +6.0%
By 2040
1,506,209 · +17.0%
By 2050
1,624,373 · +26.1%
By 2075
1,853,193 · +43.9%
By 2100
1,901,231 · +47.6%

Race, ethnicity, and origin ACS 2023

Neighborhood character
Predominantly White (67%)
Race & ethnicity
White 67% Hispanic / Latino 25% Asian 6% Two or more races 3% Pacific Islander 2%
Hispanic origin (detail)
Mexican 25%
Common ancestry
Slovak 5% Serbian 2% Portuguese 2%
Foreign-born
27% · Canada, South Korea, China
Languages at home
77% English-only · Spanish 20% Other Asian/Pacific 2% Chinese 1%

Political lean MEDSL · Contra Costa

2024 margin
Solid D (+38.0) · D 67.3% · R 29.4% · Other 3.3%
2008→2024 swing
+0.2pp no change · 2008: 37.8pp · 2024: 38.0pp
All cycles
2024: D+38.0 2020: D+45.3 2016: D+43.5 2012: D+33.7 2008: D+37.8

Not yet ingested

Civics

Market trends

HPI YoY
▲ 13.77%
Current HPI
312.0698
Rent YoY
Metro
State GDP YoY
▲ 3.21%
F500 in state
116

Industry mix (Fortune 500 HQ in CA)

Industry F500 HQs Revenue

Price history

-2.0% since first listed
11 events — show timeline
  • 2026-05-07 Price Changed $195,000 bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2026-02-27 Price Changed $199,000 bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2026-02-08 Listed $210,000 bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2022-12-28 Sold (MLS) $145,000 bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2022-11-27 Pending bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2022-11-15 Relisted bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2022-11-11 Pending bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2022-10-11 Price Changed $169,000 bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2022-09-17 Price Changed $179,000 bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2022-09-09 Price Changed $195,000 bridgeMLS, Bay East AOR, or Contra Costa AOR
  • 2022-08-11 Listed $199,000 bridgeMLS, Bay East AOR, or Contra Costa AOR

Property tax history

+6.3%/yr

Latest (2025): $281 · +1.8% YoY. Source: county tax records.

Cash-flow waterfall

monthly

Sold comps — $/sqft

last 12 mo · ≤1 mi

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