204 Richbell Rd Unit B4 · Mamaroneck, NY 10543

$169,900

1 bd · 1.0 ba · 750 sqft · Condo · 21 Days on market

Built 1948 Average condition $227/sqft · 16% below area Est $202k · 16% under

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Why this score? — see what drove the A- 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
• ARV discount +14.6/15.0
• 1% rule +10.0/10.0
• DSCR +10.0/10.0
• Schools +7.1/10.0
• Rent growth +4.2/5.0
• Livability +3.5/5.0
• Condition / age +2.8/5.0
• Appreciation +0.0/10.0

Listing remarks

Sunny unit on a quiet court side of a highly desirable Mamaroneck Gardens. Sold "as is". Microwave is not working. New shareholder will be obligated to legally replace their fuse boxes with circuit breaker within six months of becoming a shareholder. Asking price reflects that requirement.

Key facts

• Built 1948
• Listed 21 days

What this means for you Summary

Snapshot

• This is a 1-bed/1.0-bath condo listed at $170k. Condition is rated average.

Deal economics

• At list price, monthly cash flow is $1k ($14k/yr) — positive.
• The deal already cash-flows at list — no discount required.
• Meets the 1% rule at list price ($3k rent vs $170k).
• Recommended offer: $167k (1.5% below list) — sets the bar for market timing.
• Cap rate 14.7% vs local median 3.1% in Mamaroneck — 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 69/100 on livability (#491 in NY) — a middle-class / working-renter tenant base. Strengths: crime A+, employment A+, schools B+; Watch: amenities C-, commute F, cost of living F.
• Mamaroneck Union Free School District (suburban): math 74% / reading 81% proficiency, ranked #47 of 590 in NY (top 8%) — strong family-tenant draw, lease renewals of 3-5y typical; only 12% free/reduced lunch — higher-income household profile.
• Market conditions: Rents rising fast (+6.7%/yr); 124 active listings in the ZIP; 15 comparable units currently listed for rent nearby; rentals lingering (median 44d on market — plan ~5-8 weeks vacancy on turnover, expect pricing pressure); 53% of comp listings sitting > 30 days — soft ceiling on asking rent; high-income renter base; 954 units permitted in Westchester County in 2024 (649 in 5+ unit buildings).

Forward outlook

• Local home prices are declining (-3.0%/yr); year-one equity from $1k of loan paydown is wiped out by about $5k of value loss. Plan a longer hold.
• Westchester County population projected at +10% by 2050 — modest demand growth; plan on rents tracking national, not racing it.
• At projected returns (-3.0% appreciation + 6.7% rent growth), your $48k cash investment doubles in ~4 years — after that, you're playing with house money.

Negotiation context

• It's been on market 21 days — a 2% lower offer ($167k) is reasonable based on typical stale-listing flexibility.

Risks & watch-outs

• Watch-outs: built in 1948 — expect roof / HVAC / electrical / plumbing capex.

Recommended offer $167,351 (1.5% below list)

Questions for the listing agent

1. Built in 1948 — when were the roof, HVAC, electrical panel, plumbing, and water heater last replaced?
2. Any open or pending special assessments — roof, HVAC, plumbing, elevator, façade? What's the per-unit balance and payoff schedule, and is the seller paying it off at close or rolling it to the buyer?
3. Is there a deadline driving the sale (1031 exchange, divorce, estate, relocation)? That informs how much negotiation room exists.
4. Schools are B-rated — typically a magnet for longer-tenancy family renters. What's the average tenant stay here, and is there a school-zone premium baked into asking?
5. 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.
6. 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.
7. 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: 1.76% ✓
• Cap rate: 14.72%
• Cash-on-cash: 30.09%
• DSCR: 2.34
• GRM: 4.7

CMA / ARV

• ARV (median comp): $201,907
• List price: $169,900
• Delta: -15.85%
• Verdict: UNDERPRICED
• Comps: 20 within 1.0 mi

Projected returns pro-forma

-3.0% appreciation · 6.7% rent growth · sell at horizon

5-year hold

• IRR: 28.8%
• Equity multiple: 2.26×
• Total profit: $60,069
• Equity at exit: $25,333

10-year hold

• IRR: 38.3%
• Equity multiple: 5.24×
• Total profit: $201,569
• Equity at exit: $14,690

Cash invested: $47,572 (down + closing). Projections, not guarantees.

Landlord ↔ Tenant lean methodology

• Overall (STATE): 15 Strongly Tenant-Friendly
• State New York: 15 Strongly Tenant-Friendly · D+10
• County: — inherits STATE
• City: — inherits STATE

NYC rent stabilization (~1M units); 2019 HSTPA strengthened tenant rights; courts deeply backlogged.

Methodology + full state rankings →

ZIP-level market 10543

• Rents YoY: 6.7%
• Active inventory: 124
• Price-to-rent: 4.7×

Monthly cashflow live

• Estimated rent: $2,996 high
• Mortgage (P&I): −$891
• Tax est. 1.5%: −$212 /mo · $2,548/yr
• Insurance: −$71
• HOA: −$0
• Vacancy / Maint / Mgmt: −$629
• Net cashflow: $1,193

Break-even live

Break-even rent $1,486

Max offer price $169,900

Occupancy floor 55%

Sensitivity live

Price	-10% $1,310	-5% $1,252	+0% $1,193	+5% $1,134	+10% $1,076
Rent	-10% $956	-5% $1,075	+0% $1,193	+5% $1,311	+10% $1,430
Rate	-1.0pp $1,279	-0.5pp $1,236	base $1,193	+0.5pp $1,149	+1.0pp $1,104

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: $42,475
• Closing costs: $5,097
• Reserves months: —
• Total cash needed: —

Rent comps 15 comps

Address	Beds	Baths	Sqft	Rent	$/sqft	DOM	Units	Dist
314 Larchmont Acres Unit 4C Mamaroneck, NY	2.0	1.0	1074	$2,985	$2.78	25d	1	0.02mi
4 Larchmont Acres Unit 4C Larchmont, NY	2.0	1.0	1074	$2,985	$2.78	25d	1	0.05mi
505 Rockland Ave Unit 2 Mamaroneck, NY	1.0	1.0	700	$2,800	$4.00	44d	1	0.38mi
412 Munro Ave Apt 3F Mamaroneck, NY	1.0	1.0	750	$2,950	$3.93	44d	1	0.62mi
1833 Palmer Ave Unit 3K Larchmont, NY	2.0	1.0	875	$2,700	$3.09	44d	1	0.67mi
300 Livingston Ave Unit 3E Mamaroneck, NY	1.0	1.0	946	$3,600	$3.81	44d	1	0.72mi
338 Palmer Ave Unit B Mamaroneck, NY	2.0	1.0	900	$3,700	$4.11	25d	1	0.76mi
225 Stanley Ave #313 Mamaroneck, NY	1.0	1.0	825	$3,500	$4.24	25d	1	0.85mi
172 E Prospect Ave Unit 304 Mamaroneck, NY	1.0	2.0	925	$3,620	$3.91	44d	1	0.99mi
18 Grand St Mamaroneck, NY	1.0	1.0	790	$3,025	$3.83	21d	1	1.09mi
5 Lester Pl Unit 1 Larchmont, NY	2.0	1.0	850	$3,200	$3.76	25d	1	1.11mi
416 Tompkins Ave Unit SECOND FLOOR Mamaroneck, NY	2.0	1.0	1100	$3,800	$3.45	44d	1	1.13mi
746 Mamaroneck Ave Mamaroneck, NY	1.0–2.0	1.0–2.0	974	$3,665	$3.76	1d	16	1.14mi
538 Jefferson Ave Mamaroneck, NY	1.0	1.0	600	$2,100	$3.50	44d	1	1.42mi
501 N Barry Ave Unit 2F Mamaroneck, NY	1.0	1.0	600	$2,150	$3.58	44d	1	1.48mi

HOA detail condo

• Monthly dues: $0 · $0/yr
• Likely covers: security
• Assessments: None detected in remarks — confirm with the listing agent.

Listing history 2 events

1. 2026-04-16
   listed $169,900 Active
2. 2026-04-15
   historical

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

Taxation est. · year 1

• Rental income: $35,957
• − Mortgage interest: −$9,517
• − Property taxes: −$2,548
• − Insurance: −$850
• − Repairs & maintenance: −$2,877
• − Management: −$2,877
• − Depreciation: −$4,943
• Taxable income: $12,346
• Est. tax owed @ 24.0%: −$2,963
• After-tax cash flow: $11,353/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.

Condition & rehab AI · 12 photos

Average 55/100 Cosmetic rehab

A well-maintained, quiet unit in a desirable location, requiring minor repairs and updates to enhance its value.

Repairs flagged

• Major Microwave — Not working
• Major Fuse boxes — Need to be replaced with circuit breakers

Value-add opportunities

• Both Paint interior walls — Fresh paint enhances curb appeal and interior aesthetics
• Both Replace microwave — A working microwave improves functionality and appeal
• Both Upgrade HVAC system — Modern HVAC system improves comfort and energy efficiency

Renovation cost estimate screening

Repair item	Severity	Est. cost
Microwave · Not working	Major	$15,000–50,000
Fuse boxes · Need to be replaced with circuit breakers	Major	$15,000–50,000
Total estimated repair cost · 2 items		$30,000–100,000

Value-add ROI direction

• Both Paint interior walls — Fresh paint enhances curb appeal and interior aesthetics ↑
• Both Replace microwave — A working microwave improves functionality and appeal ↑
• Both Upgrade HVAC system — Modern HVAC system improves comfort and energy efficiency ↑

ⓘ Cost ranges are severity-bucket heuristics (US national rule-of-thumb). Get contractor quotes + a written scope before underwriting a rehab budget.

Schools (NCES district)

• District: Mamaroneck Union Free School District
• NCES district ID: 3618240
• Math proficiency: 74% ▼ -4.00%
• Reading proficiency: 81% ▲ 9.00%
• Median HH income: $111,011
• Composite: 71.4/100
• National rank: #228
• State rank: #47 of 590 in NY

Livability — Mamaroneck

• Score: 69/100
• State rank: #491
• US rank: #8656

Category grades

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

Schools grade is shown separately in the Schools card above.

Census & demographics

• County: Westchester County · 709,332 people
• City population: 20,989
• Metro: New York-Newark-Jersey City, NY-NJ-PA
• Population (ZIP): 20,989
• Household income: $126,417
• Rent vs Own: 41.8% rent · 58.2% own
• Severe rent burden: 1152.0

Population outlook (Westchester County) Hauer SSP2

• Today (2025): 1,028,035 people
• By 2030: 1,051,636 · +2.3%
• By 2040: 1,098,520 · +6.9%
• By 2050: 1,136,044 · +10.5%
• By 2075: 1,196,925 · +16.4%
• By 2100: 1,175,147 · +14.3%

Race, ethnicity, and origin ACS 2023

• Neighborhood character: Diverse neighborhood (Simpson 0.57)
• Race & ethnicity: White 59% Hispanic / Latino 27% Two or more races 11% Asian 5% Black 4% Native American 1%
• Hispanic origin (detail): Mexican 5% Puerto Rican 4% Dominican 2%
• Common ancestry: Russian 3% Romanian 2% Scotch-Irish 2%
• Foreign-born: 28% · Canada, Jamaica, China
• Languages at home: 60% English-only · Spanish 23% Other Indo-European 8% Other Asian/Pacific 2%

Political lean MEDSL · Westchester

• 2024 margin: Strong D (+26.3) · D 63.1% · R 36.9%
• 2008→2024 swing: -1.3pp toward R · 2008: 27.6pp · 2024: 26.3pp
• All cycles: 2024: D+26.3 2020: D+36.3 2016: D+32.8 2012: D+22.2 2008: D+27.6

Not yet ingested

• Civics: —

Market trends

• HPI YoY: ▼ -220.53%
• Current HPI: 268.4687
• Rent YoY: ▲ 6.70%
• Metro: New York-Newark-Jersey City, NY-NJ-PA
• State GDP YoY: ▲ 2.60%
• F500 in state: 92

Industry mix (Fortune 500 HQ in NY)

Industry	F500 HQs	Revenue
▸Financial Services	10	$950B
▸Consumer Goods	9	$162B
▸Insurance	4	$225B
▸Telecommunications	2	$144B
▸Pharmaceuticals	2	$112B
▸Media / Entertainment	2	$69B

Price history

2 events — show timeline

• 2026-04-16 Listed $169,900 OneKey® MLS as Distributed by MLS Grid
• 2026-04-15 Coming Soon — OneKey® MLS as Distributed by MLS Grid