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335 A St Duplex
D Composite 40.53
Why this score? — see what drove the D 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 +12.0/30.0
  • ARV discount +9.0/15.0
  • Rent growth +4.0/5.0
  • Schools +4.0/10.0
  • DSCR +3.5/10.0
  • Livability +3.2/5.0
  • Condition / age +2.5/5.0
  • 1% rule +2.3/10.0
  • Appreciation +0.0/10.0

$1,299,000

335 A St · South San Francisco, CA 94080
3 bd · 2.0 ba · 1,387 sqft · MultiFamily public records · 53 Days on market
Built 1930 2,500 sqft lot $937/sqft · 44% above area Est $1344k · at est.

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

Multi-family units

County records classify this as Multi-Family (2-4 Unit). Listing-text estimate: 2 units. confirmed

Listing remarks

An investment opportunity awaits at 335-337 A Street, a well-maintained duplex ideally located in the heart of South San Francisco. Perfect for an owner-occupant or savvy investor, this versatile property features 1171sqft upper unit with two bedrooms, two full bathrooms, a spacious living room, kitchen, sunroom, and a private patio with a swing. Plus a 899sqft lower unit which is fully electric and includes one bedroom, a full bathroom, a bonus room/office, a cozy living room, and a kitchen with deck access. Additional highlights include a three-car carport, ample storage, washer and dryer hookups, and separate PG & E and water meters for each unit. A shared backyard with patio space a

Key facts

  • Bonus room
  • Deck access
  • Private patio

Tags

WELL MAINTAINED DUPLEXPRIVATE PATIOBONUS ROOMDECK ACCESSTHREE CAR CARPORTAMPLE STORAGE

Property features AI

Finance

  • HOA & community: No HOA

Exterior

  • Parking: Covered carport parking for 3 vehicles total
  • Utilities: City utilities; Public sewer; Separate meters for water, gas and electricity
  • Home design: Duplex (Residential Income); House(s) subtype; Built in 1930; Updated/remodeled condition
  • Construction: Year built 1930
  • Exterior features: Regular-shaped lot; Other-style roof

Interior

  • Kitchen: Microwave; Free-standing refrigerator; Free-standing gas range; Dishwasher
  • Bedrooms: Unit 1: 1 bedroom; Unit 2: 2 bedrooms
  • Flooring: Wood; Tile; Laminate; Carpet
  • Bathrooms: Unit 1: 1 full bathroom; Unit 2: 2 full bathrooms
  • Heating & cooling: Gas heating
  • Interior features: Updated/remodeled interiors; Dual-pane full windows; Two levels (2-story)
  • Laundry & utility: Washer and dryer owned

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 2 × 3-bed/3.0-bath units multifamily listed at $1.30M.

Deal economics

  • At list price, monthly cash flow is $-315 ($-4k/yr) — negative. Per door: $-157/mo.
  • To cash-flow at today's rent, offer at most $1.24M (4.3% below list).
  • To meet the 1% rule (rent ≥ 1% of price), the offer needs to be $948k (27.0% below list).
  • Recommended offer: $948k (27.0% below list) — sets the bar for 1% rule.
  • Cap rate 6.0% vs local median 2.1% in South San Francisco — 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 65/100 on livability (#372 in CA) — a middle-class / working-renter tenant base. Strengths: commute A+, employment A+; Watch: amenities F, cost of living F, health & safety F.
  • South San Francisco Unified (urban): math 38% / reading 47% proficiency, ranked #176 of 517 in CA (top 34%) — families likely to look elsewhere, expect single-tenant / working-renter base with shorter leases.
  • Zoned schools: Los Cerritos Elementary (math 17% / reading 22%, grade F, #1,270 of 1,571 statewide, top 83%, 306 students, 50% FRL); Alta Loma Middle (math 32% / reading 42%, grade F, #170 of 498 statewide, top 35%, 628 students, 34% FRL); South San Francisco High (math 37% / reading 64%, grade D+, #324 of 1,170 statewide, top 28%, 1,280 students, 41% FRL).
  • Market conditions: Rents rising fast (+6.0%/yr); 76 active listings in the ZIP; 14 comparable units currently listed for rent nearby; rentals leasing fast (median 4d on market — plan ~1-2 weeks tenant-placement turnaround); high-income renter base; 1,019 units permitted in San Mateo County in 2024 (484 in 5+ unit buildings).
  • At $9,479/mo this rent would consume 83% of the median local household income ($137k/yr) (locally 2470% of renters already pay >50% of income on rent) — very limited rent-growth headroom before tenants either downsize or default.

Forward outlook

  • Local home prices are declining (-3.0%/yr); year-one equity from $9k of loan paydown is wiped out by about $39k of value loss. Plan a longer hold.
  • San Mateo County population projected at +24% by 2050 — long-run rental-demand tailwind backs the buy-and-hold thesis.

Negotiation context

  • It's been on market 53 days — a 3% lower offer ($1.26M) is reasonable based on typical stale-listing flexibility.
  • Current owner paid $165k; list at $1.30M implies a 687% gain — meaningful room to come down on a strong offer.

Risks & watch-outs

  • Watch-outs: built in 1930 — expect roof / HVAC / electrical / plumbing capex.
Recommended offer $947,900 (27.0% below list)

Questions for the listing agent

  1. What do current leases actually rent for vs. the listed asking? Can we see a recent rent roll and the last 12 months of T-12 income?
  2. It's been on market 53 days. Have you received any prior offers? Is the seller open to a 27% concession, seller financing, or rate buy-down credit?
  3. Can we see the unit-by-unit rent roll, current vacancy, and any below-market leases? What's the average tenancy length?
  4. What capital expenditures (roof, boiler, parking lot, exteriors) have been made in the last 5 years, and what's planned in the next 2?
  5. Built in 1930 — when were the roof, HVAC, electrical panel, plumbing, and water heater last replaced?
  6. Is there a deadline driving the sale (1031 exchange, divorce, estate, relocation)? That informs how much negotiation room exists.
  7. Schools are D-rated, which usually means shorter tenancies and higher turnover. Who's the typical renter profile here, and what's been the actual vacancy rate?
  8. The area grade is low — what's the realistic commute time and amenity access for the typical tenant pool here? Any planned neighborhood developments (good or bad) we should know about?
  9. 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.
  10. 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.
  11. How much new apartment / multifamily construction is in the pipeline within 1–3 miles? Heavy new supply (>2% of stock underway) typically softens rents 12–24 months out; light construction supports rent growth.

Investment metrics

1% rule
0.73%
Cap rate
6.00%
Cash-on-cash
-1.04%
DSCR
0.95
GRM
11.4

CMA / ARV

ARV (median comp)
$1,343,690
List price
$1,299,000
Delta
-3.33%
Verdict
FAIR
Comps
11 within 1.0 mi
Show comp detail 1 sale within ~0.75 mi
Address Dist Beds/Ba Sqft Sold Price $/sf Match
729 Grand Ave 0.61mi 4/2.0 (+1) 1,310 (-6%) 8mo $1,505,000 $1,149 51

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

Projected returns pro-forma

-3.0% appreciation · 6.02% rent growth · sell at horizon

5-year hold
IRR
-15.2%
Equity multiple
0.45×
Total profit
$-201,449
Equity at exit
$193,685
10-year hold
IRR
-2.7%
Equity multiple
0.80×
Total profit
$-74,027
Equity at exit
$112,314

Cash invested: $363,720 (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 94080

Rents YoY
6.0%
Active inventory
76
Price-to-rent
22.8×

Monthly cashflow live

Estimated rent
$9,479 medium interval (Pro) →
Mortgage (P&I)
$6,812
Tax from tax record
$450 /mo · $5,398/yr
Insurance
$541
HOA
$0
Vacancy / Maint / Mgmt
$1,991
Net cashflow
$-315

Break-even live

Break-even rent $9,877
Max offer price $1,243,389
Occupancy floor 98%

Sensitivity live

Price -10% $421 -5% $53 +0% $-315 +5% $-682 +10% $-1,050
Rent -10% $-1,064 -5% $-689 +0% $-315 +5% $60 +10% $434
Rate -1.0pp $339 -0.5pp $16 base $-315 +0.5pp $-651 +1.0pp $-994

2-unit breakdown (identical units grouped — click to expand)

UnitsBedsBathsEst. rent
Total (2 units) $9,479

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
$324,750
Closing costs
$38,970
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.

Rent comps 14 comps

AddressBedsBaths SqftRent$/sqft DOM Units Dist
739 Circle Ct South San Francisco, CA 2.0 1.0 900 $3,795 $4.22 26d 1 0.43mi
663 1st Ln Unit 663 South San Francisco, CA 3.0 2.0 1100 $5,100 $4.64 0d 1 0.49mi
150 Hazelwood Dr South San Francisco, CA 4.0 3.0 1350 $1,550 $1.15 45d 1 0.56mi
657 Grand Ave #1655 South San Francisco, CA 3.0 2.0 1100 $4,450 $4.05 45d 1 0.65mi
1111 Mission Rd Unit 09 South San Francisco, CA 2.0 2.0 950 $3,350 $3.53 16d 1 0.85mi
225 Alta Mesa Dr South San Francisco, CA 3.0 1.0 1230 $5,100 $4.15 1d 1 1.03mi
853 Commodore Dr #1398 San Bruno, CA 1.0–2.0 1.0–2.0 774 $4,600 $5.94 0d 2 1.15mi
1099 Admiral Ct San Bruno, CA 1.0–3.0 1.0–3.0 1265 $5,665 $4.48 0d 1 1.17mi
150 Airport Blvd South San Francisco, CA 1.0–2.0 1.0–2.0 998 $5,347 $5.36 0d 17 1.17mi
943 Ridgeview Ct Unit 2A South San Francisco, CA 2.0 1.0 930 $3,480 $3.74 45d 1 1.20mi
400 Cypress Ave South San Francisco, CA 3.0 1.0–2.0 944 $5,375 $5.69 0d 24 1.23mi
2210 Gellert Blvd #5405 South San Francisco, CA 3.0 2.0 1290 $4,250 $3.29 3d 1 1.37mi
833 Linden Ave South San Francisco, CA 3.0 1.0 1188 $4,095 $3.45 45d 1 1.38mi
101 McLellan Dr South San Francisco, CA 2.0 1.0–2.0 779 $3,740 $4.80 0d 7 1.40mi

Listing history 19 events

  1. 2026-06-21
    days on market $1,299,000 Active 53 DOM
  2. 2026-06-18
    days on market $1,299,000 Active 50 DOM
  3. 2026-06-17
    days on market $1,299,000 Active 49 DOM
  4. 2026-06-16
    days on market $1,299,000 Active 48 DOM
  5. 2026-06-15
    days on market $1,299,000 Active 47 DOM
  6. 2026-06-13
    days on market $1,299,000 Active 45 DOM
  7. 2026-06-13
    days on market $1,299,000 Active 44 DOM
  8. 2026-06-09
    days on market $1,299,000 Active 41 DOM
  9. 2026-06-08
    days on market $1,299,000 Active 40 DOM
  10. 2026-06-07
    days on market $1,299,000 Active 39 DOM
  11. 2026-06-04
    days on market $1,299,000 Active 36 DOM
  12. 2026-06-03
    days on market $1,299,000 Active 35 DOM
  13. 2026-06-02
    days on market $1,299,000 Active 34 DOM
  14. 2026-06-01
    days on market $1,299,000 Active 33 DOM
  15. 2026-05-31
    days on market $1,299,000 Active 32 DOM
  16. 1986-11-26
    soldstatus $165,000
  17. 1986-11-26
    soldstatus $165,000
  18. 1986-04-30
    soldstatus $135,000
  19. 1986-04-30
    soldstatus $135,000

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

Tax reassessment forecast CA · Resets to sale price

Current annual tax
$5,398 · $450/mo
Projected year-2 tax
$9,872 · $823/mo
Expected delta
+$4,474/yr (+$373/mo · 82.9%)

ⓘ Screening estimate from a state-policy table — verify with the county assessor before closing.

Climate risk First Street

  • 🌊 Flood 1/10 Low FEMA zone X (unshaded) · 0% chance over 30 yrs
  • 🔥 Wildfire 2/10 Low
  • 🌡 Heat 2/10 Low 8 d/yr ≥78°F today · 19 d/yr by 30 yrs out
  • 💨 Wind 1/10 Low
  • 🫁 Air quality 7/10 Severe 13 unhealthy d/yr today · 13 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
$113,748
− Mortgage interest
−$72,764
− Property taxes
−$5,398
− Insurance
−$6,495
− Repairs & maintenance
−$9,100
− Management
−$9,100
− Depreciation
−$37,789
Taxable loss
−$26,898
combined federal + state — saved on this device
Est. tax savings @ 24.0%
+$6,456
After-tax cash flow
$2,678/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
South San Francisco Unified
NCES district ID
0637530
Math proficiency
38% ▼ -6.00%
Reading proficiency
47% ▼ -5.00%
Median HH income
$82,986
Composite
39.69/100
National rank
#3905
State rank
#176 of 517 in CA

Livability — South San Francisco

Score
65/100
State rank
#372
US rank
#12707

Category grades

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

Schools grade is shown separately in the Schools card above.

Census & demographics

Census place
South San Francisco, CA
County
San Mateo County · 733,415 people
City population
64,761
Metro
San Francisco-Oakland-Berkeley, CA
Population (ZIP)
64,761
Household income
$136,733
Rent vs Own
41.1% rent · 58.9% own
Severe rent burden
2470.0

Population outlook (San Mateo County) Hauer SSP2

Today (2025)
864,008 people
By 2030
910,523 · +5.4%
By 2040
997,285 · +15.4%
By 2050
1,071,189 · +24.0%
By 2075
1,197,206 · +38.6%
By 2100
1,192,523 · +38.0%

Race, ethnicity, and origin ACS 2023

Neighborhood character
Diverse neighborhood (Simpson 0.68)
Race & ethnicity
Asian 42% Hispanic / Latino 31% White 21% Two or more races 13% Black 2% Pacific Islander 1%
Hispanic origin (detail)
Mexican 18%
Common ancestry
Lithuanian 1% Italian 1% Scotch-Irish 1%
Foreign-born
40% · Canada, China, Vietnam
Languages at home
47% English-only · Spanish 20% Tagalog/Filipino 12% Chinese 11%

Political lean MEDSL · San Mateo

2024 margin
Solid D (+50.3) · D 73.5% · R 23.2% · Other 3.3%
2008→2024 swing
+1.6pp toward D · 2008: 48.7pp · 2024: 50.3pp
All cycles
2024: D+50.3 2020: D+57.7 2016: D+57.7 2012: D+44.8 2008: D+48.7

Not yet ingested

Civics

Market trends

HPI YoY
▼ -1094.19%
Current HPI
330.5769
Rent YoY
▲ 6.02%
Metro
San Francisco-Oakland-Berkeley, CA
State GDP YoY
▲ 3.21%
F500 in state
116

Industry mix (Fortune 500 HQ in CA)

Industry F500 HQs Revenue

Price history

+22.2% since first listed
4 events — show timeline
  • 1986-11-26 Sold (Public Records) $165,000 Public Records
  • 1986-11-26 Sold (Public Records) $165,000 Public Records
  • 1986-04-30 Sold (Public Records) $135,000 Public Records
  • 1986-04-30 Sold (Public Records) $135,000 Public Records

Property tax history

+2.4%/yr

Latest (2025): $5,398 · +1.2% YoY. Source: county tax records.

Cash-flow waterfall

monthly

Sold comps — $/sqft

last 12 mo · ≤1 mi

Loading sold comps…