---
watermark: ORIRO
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name: finance-real-estate
provider: ORIRO.ai
copyright: Copyright (c) 2026 ORIRO.ai
description: >
  Real estate finance — investment analysis, mortgage math, cap rates, cash
  flow analysis, REITs, and real estate investing strategies. Activate for
  questions about real estate investment, rental property analysis, mortgage
  options, cap rates, cash-on-cash returns, or any real estate financial question.
  Sources: BiggerPockets, Investopedia real estate, Federal Reserve mortgage data.
---

# Real Estate Finance

## Key metrics for investment properties

### Cap Rate (Capitalization Rate)

Cap Rate = Net Operating Income / Property Value
**NOI = Gross Rental Income - Vacancy - Operating Expenses**
(Operating expenses: property taxes, insurance, maintenance, management, not debt service)

Cap rate represents yield if purchased all-cash.
Higher cap rate = higher yield = higher risk or lower-quality market.
Class A markets (NYC, SF): 3-5% cap rates. Class B: 5-7%. Class C/tertiary: 7-10%+.

**Use cap rate to compare properties.** Buy below market cap rate = overpaying (unless appreciation play).

### Cash-on-Cash Return

CoC = Annual Pre-Tax Cash Flow / Total Cash Invested
Accounts for financing — most important metric for leveraged investors.

**Annual Pre-Tax Cash Flow = NOI - Debt Service (principal + interest)**

Example:
Purchase price: $200,000
Down payment (25%): $50,000
Loan: $150,000 at 7% for 30 years → Monthly payment ~$998 → Annual: $11,976
NOI: $14,400/year (after vacancy, taxes, insurance, maintenance)
Cash flow: $14,400 - $11,976 = $2,424/year
CoC = $2,424 / $50,000 = 4.85%

### Gross Rent Multiplier (GRM)

GRM = Purchase Price / Annual Gross Rent
Rough screening metric. Lower = better value.
Typical range: 8-12× in most markets.

### The 1% Rule

Monthly rent ≥ 1% of purchase price.
$200,000 property → $2,000+/month rent.
Screening metric only — markets with high appreciation often don't meet this.

## Mortgage fundamentals

**Amortization:** Each payment includes interest and principal.
Early in loan: mostly interest. End of loan: mostly principal.
Example: $200K at 7%, 30 years. Month 1: ~$1,167 interest, ~$165 principal.
Month 360: ~$9 interest, ~$1,322 principal.

**Mortgage types:**
Fixed rate: Rate locked for loan term. Predictable.
ARM (Adjustable Rate): Initial fixed period then adjusts. 5/1 ARM = 5 years fixed, then adjusts annually.
Interest only: Pay only interest for set period; no equity built.
FHA: 3.5% down, mortgage insurance required. Min credit score 580.
VA: 0% down for veterans. No PMI. Funding fee.
Conventional: Fannie/Freddie backed. 3-20% down.
Jumbo: Above conforming limits ($766,550 in 2024). Stricter requirements.

**PMI (Private Mortgage Insurance):** Required if < 20% down on conventional loan.
Typically 0.5-1.5% of loan amount annually. Removed when LTV reaches 80%.

**Points:** Pre-paying interest to get lower rate. 1 point = 1% of loan amount = ~0.25% rate reduction.
Break-even analysis: Points cost / Monthly payment savings = Months to break even.

## BRRRR strategy

Buy → Rehab → Rent → Refinance → Repeat
Buy distressed property below market. Rehab to force appreciation.
Rent to achieve target NOI. Refinance based on new (higher) appraised value.
Pull out most/all of invested capital. Repeat with next property.

## REITs (Real Estate Investment Trusts)

Companies that own income-producing real estate. Publicly traded like stocks.
Required to distribute 90%+ of taxable income as dividends.
**Types:** Equity REITs (own properties), Mortgage REITs (own mortgages), Hybrid.
**Sectors:** Office, retail, residential, industrial, healthcare, data centers, cell towers.

**REIT valuation metrics:**
FFO (Funds from Operations): Net income + depreciation - gains on sales. More relevant than EPS.
P/FFO: REIT equivalent of P/E ratio.
NAV (Net Asset Value): Property value - debt. Trades at premium or discount to NAV.
Dividend yield: Most important for income investors.

## 1031 Exchange

Defer capital gains tax on investment property sale by reinvesting in a "like-kind" property.
Rules: Must identify replacement property within 45 days; close within 180 days.
All proceeds must go through qualified intermediary (cannot touch the money).
Must invest equal or greater value (any boot received is taxable).
Powerful wealth-building tool for serious real estate investors.

Sources: BiggerPockets guides (biggerpockets.com), Investopedia real estate investing,
Federal Reserve mortgage data, IRS Publication 527 (Residential Rental Property),
IRS 1031 Exchange guidance