Real Estate Finance — Residential, Commercial, REITs, Securitization, Development

Real estate is the largest single asset class in most economies. US household real estate equity exceeded USD 35 trillion in early 2025 (Federal Reserve Z.1 Flow of Funds); commercial real estate stock is roughly USD 22 trillion (NAREIT estimate). The financial machinery that prices, finances, securitizes, and trades that stock spans 30-year residential mortgages, conduit CMBS, agency multifamily, listed and non-listed REITs, private real estate funds, development pro-formas, and a thicket of tax incentives. This note maps the structures and players in 2024-2026.

Residential mortgages

Origination and channels

• Retail — lender originates directly with borrower (Chase, Bank of America, Wells Fargo branches; Rocket Mortgage direct-to-consumer).
• Wholesale — independent mortgage broker submits to wholesale lender (United Wholesale Mortgage UWM, Rocket TPO, Homepoint pre-shutdown 2023, Newrez).
• Correspondent — small/regional lender originates and sells closed loans to aggregator (Wells Fargo, JPMorgan Chase, AmeriHome, Pennymac).

Top US residential originators 2024 (Inside Mortgage Finance): UWM, Rocket Mortgage, Pennymac, CrossCountry, Newrez, Chase, Wells Fargo, Fairway Independent, US Bank, Citizens. The aftermath of the 2020-21 refi boom shrunk the industry: total origination fell from USD 4.4T 2021 to USD 1.6T 2023; ~30% headcount cut.

Loan categories

• Conforming conventional — meets Fannie Mae / Freddie Mac eligibility (the GSEs). 2024 baseline conforming loan limit USD 766,550, high-cost areas up to USD 1,149,825 (high-cost limit). 2025 baseline limit USD 806,500. Underwriting via DU Desktop Underwriter (Fannie) / LP Loan Product Advisor (Freddie). LTV up to 97% with PMI; cancellable at 78% LTV under HOPA Homeowners Protection Act 1998.
• FHA — Federal Housing Administration insurance; 3.5% minimum down at 580+ FICO; MIP upfront 1.75% financed + annual 0.55% for 30-year >5% down (post 2023 cut from 0.85%). MIP lasts for loan life if down <10%, otherwise 11 years. Caters first-time and lower-credit buyers (~85% first-time).
• VA — Department of Veterans Affairs guarantee for service members and veterans; no minimum down payment, no PMI; funding fee 1.25-3.3% depending on use number and down; IRRRL Interest Rate Reduction Refinance Loan streamline refi.
• USDA Rural Development — Section 502 Guaranteed Loan; 0% down for rural-eligible properties; income limits.
• Jumbo (non-conforming conventional) — exceeds conforming limit; held in bank portfolio or private-label securitized (J.P. Morgan JPMMT, Chase, Goldman GSMSC, Sequoia Mortgage Trust). Underwriting often stricter: 700+ FICO typical, larger reserves required, full doc.
• Non-QM (non-Qualified Mortgage) — borrowers outside Ability-to-Repay safe harbor: bank-statement-only (self-employed), DSCR (investor cash-flow), foreign national, ITIN. Securitized into private-label NQM RMBS (Angel Oak, Verus, A&D Mortgage, Newrez NRMLT shelves).

Rate structures

• 30-year fixed-rate — the US idiosyncratic standard. Prepayable at any time without penalty (consumer-friendly; subsidized by GSE structure and absence of prepayment penalty option). Rate stayed in 2.6-3.5% 2020-21, peaked 8.0% October 2023, settled 6.5-7.3% range 2024-25.
• 15-year fixed — faster amortization, lower rate (typically 60-90 bp below 30-year), higher monthly payment.
• ARM (adjustable-rate mortgage) — initial fixed period (5/6, 7/6, 10/6 — the “/6” denotes 6-month adjustment after the initial period since post-LIBOR; older 5/1, 7/1, 10/1 referred to annual adjustment under LIBOR). Index since 2023: SOFR-based (30-day Average SOFR, CME Term SOFR); LIBOR USD ICE Benchmark Administration terminated June 30 2023; LIBOR Act 2022 enacted spread-adjusted SOFR fallback. ARM share of originations declined from ~15% 2022 to 5-7% 2024-25 (cooled by inverted yield curve).
• Interest-only — niche jumbo product; usually 10-year IO period then amortizing.

Underwriting

• Credit score — FICO 8 score 300-850 used by most lenders; agency minimums ~580 FHA, 620 conventional. FICO 10T and VantageScore 4.0 mandated for GSE use by FHFA by 2025-26 (transition delayed multiple times).
• DTI debt-to-income — front-end (housing/income), back-end (total debt/income). QM Qualified Mortgage rule (CFPB) used 43% back-end ceiling pre-2021; the GSE Patch sunset; the 2021 amended QM rule moved to a price-based threshold (APR vs APOR Average Prime Offer Rate).
• LTV loan-to-value — combined CLTV including subordinate liens. PMI tiers by LTV and credit.
• Reserves — months of housing payments in liquid reserves required (typically 2-6 months agency, 6-24 months jumbo/investment).
• Appraisal — Uniform Residential Appraisal Report (URAR Form 1004) by certified appraiser; AVM Automated Valuation Model and PIW Property Inspection Waiver permitted for low-risk conforming refis post-2017; bias-mitigation reforms (FHFA Equitable Housing Finance Plans 2022+; PAVE Property Appraisal and Valuation Equity Task Force).

Servicing

The servicer collects payments, manages escrow, handles tax/insurance disbursement, services delinquencies, processes loss mitigation (modifications, forbearance, short sale, deed-in-lieu), and forecloses if necessary. Servicing rights (MSRs Mortgage Servicing Rights) are valued and traded; Pennymac, Mr. Cooper, Rocket, Lakeview, Wells Fargo (declining), Newrez are large MSR holders. Ginnie Mae servicing requires advance obligations even for delinquent loans, a liquidity strain that triggered USD 1B+ government-sponsored Ginnie Mae PTAP/C19 facility in 2020.

Securitization

• Agency MBS — Fannie Mae UMBS Uniform Mortgage-Backed Security (Fannie + Freddie merged into common UMBS June 2019 SCP Single Security Initiative), Ginnie Mae I/II. TBA To-Be-Announced market is the world’s second-largest fixed-income market by daily trading volume after US Treasuries (~USD 250B average daily). Coupon stack 5.0%, 5.5%, 6.0% etc.; pool numbers identified at allocation; settlement monthly per SIFMA calendar.
• Pass-through — investors receive pro-rata principal and interest.
• CMO (collateralized mortgage obligation) — tranched cash flows: sequential (A, B, C, Z accrual), planned amortization class (PAC), targeted amortization class (TAC), support/companion bonds, IO interest-only, PO principal-only, floater/inverse floater.
• Private-label RMBS (non-agency) — collapsed post-2008 ($1.4T+outstanding2007\to$50B annual issuance 2024); current market is jumbo prime (J.P. Morgan, Chase, Goldman, Sequoia), non-QM (Angel Oak, Verus, Lone Star, A&D, AOMT), single-family rental (SFR; Blackstone Invitation Homes 2017 first deal; PrETIUM, Tricon, FirstKey, Amherst), credit risk transfer (CRT — Fannie CAS Connecticut Avenue Securities, Freddie STACR Structured Agency Credit Risk).
• Risk retention — Dodd-Frank Title IX, Reg RR: 5% horizontal/vertical/L-shape retention by sponsor; QRM Qualified Residential Mortgage exemption.

2008 mortgage crisis (compressed history)

Subprime origination ballooned to ~25% of 2006 originations; Alt-A and NINJA loans expanded the credit cone. Originate-to-distribute model with PLS securitization, CDO repackaging, AAA tranching, ABCP commercial paper conduit funding, AIG CDS protection writing. ABX index marks collapsed 2007; Bear Stearns Asset Management hedge funds failed June 2007; IndyMac July 2008; Fannie/Freddie placed in FHFA conservatorship September 7 2008 (still ongoing as of 2026, despite multiple administration attempts to exit); Lehman bankruptcy September 15 2008; AIG rescue September 16; Reserve Primary money fund broke the buck September 16; TARP signed October 3 2008. Loss estimates: ~10M foreclosures 2007-2014, USD 13T in housing equity erased peak-to-trough. Dodd-Frank 2010, CFPB created, QM rule 2014, RFC Resolution Funding Corp legacy. The Big Short (Lewis 2010), Magnetar Capital trades, Paulson & Co. ABACUS 2007-AC1 (SEC v. Goldman 2010 USD 550M settlement), Burry Scion Capital, FrontPoint Partners Eisman.

Commercial real estate (CRE)

Asset classes

• Office — Class A (premium, modern, urban), Class B (older, suburban or commodity urban), Class C (older, often value-add or conversion candidates). Boston Properties (BXP), Vornado (VNO), SL Green (SLG), Empire State Realty Trust, Brookfield Property, Tishman Speyer dominate Class A urban towers.
• Retail — power centers (big-box anchored), grocery-anchored neighborhood centers (Kimco, Brixmor, RPT, Regency Centers), strip centers (SITE Centers, InvenTrust, Kite), lifestyle/open-air (Simon, Macerich, Federal Realty), regional malls (Simon, Macerich, Brookfield), outlet (Tanger), street retail (Acadia Realty Trust). Pandemic stress 2020 (J.C. Penney bankruptcy May 2020, Neiman Marcus, JCPenney, Stein Mart, Tuesday Morning) plus e-commerce share growth from ~11% 2019 to 16% peak 2020 (~15% steady 2024) accelerated mall consolidation.
• Industrial — bulk distribution warehousing, last-mile/infill, light industrial, flex/R&D, cold storage. Prologis (PLD) the dominant global landlord at ~1.2 billion sq ft; Duke Realty acquired by Prologis 2022 USD 26B; Rexford (Southern California infill), STAG Industrial, EastGroup, First Industrial, Terreno, Americold (cold storage), Lineage Logistics (cold storage; IPO 2024). E-commerce one-percent demand thesis: every USD 1B e-commerce growth generates ~1.25M sq ft demand (Prologis research).
• Multifamily (apartments) — garden, mid-rise, high-rise; class A/B/C analogous to office. AvalonBay (AVB), Equity Residential (EQR), Camden (CPT), Mid-America (MAA), UDR, Essex Property Trust (Northern + Southern California specialist), Independence Realty, BRT Apartment Trust, Veris Residential, NexPoint Residential. Single-family rental (SFR): Invitation Homes (INVH; Blackstone-spun 2017), American Homes 4 Rent (now AMH), Tricon Residential, Pretium, Amherst.
• Hospitality — Marriott, Hilton, Hyatt, Choice are managers/franchisors; owners include Host Hotels (HST; largest US lodging REIT), Park Hotels (HLT spinoff), Sunstone, Pebblebrook, Ryman, Apple Hospitality (limited-service); RevPAR (revenue per available room) cycles with leisure/business travel.
• Self-storage — Public Storage (PSA), Extra Space (acquired Life Storage 2023 USD 16B), CubeSmart, National Storage Affiliates.
• Data centers — Digital Realty (DLR), Equinix (EQIX; the dominant interconnection / colocation operator with ~265 IBX facilities worldwide), Iron Mountain Data Centers, Switch (acquired by DigitalBridge 2022 USD 11B). AI training and inference demand drove unprecedented hyperscale leasing in 2024-25 (Microsoft Azure, AWS, Google, Meta, Oracle).
• Cell towers — American Tower (AMT; ~225,000 towers globally), Crown Castle (CCI; pivot from small cell strategy 2024 with Elliott Management activism), SBA Communications (SBAC).
• Healthcare — medical office buildings (MOB), skilled nursing facilities (SNF), senior housing (independent / assisted / memory care), life sciences. Welltower (WELL), Ventas (VTR), Healthpeak (DOC; merged with Physicians Realty 2024), Omega Healthcare (OHI; SNF-focused), CareTrust, Sabra, Healthcare Realty (HR), Alexandria Real Estate Equities (ARE; the dominant life sciences landlord with Cambridge, San Francisco, San Diego clusters).
• Specialty — manufactured housing (Equity LifeStyle ELS, Sun Communities SUI), student housing (American Campus Communities taken private by Blackstone 2022), gaming (VICI Properties, Gaming and Leisure Properties GLPI), prison REITs (CoreCivic CXW, GEO Group, now corporate not REIT), billboard (Outfront, Lamar).

Valuation

• Cap rate = NOI / property value. Inverse of yield. As interest rates rose 2022-23, cap rates expanded (values fell) across most CRE; Green Street CPPI Commercial Property Price Index fell ~22% from March 2022 peak through August 2023; office down ~37%, apartment ~25%, industrial ~21%, retail ~16%, lodging ~13%. Partial recovery 2024 (industrial, apartment, data center) but office trough continued through 2025.
• NOI net operating income = effective gross income (potential rent − vacancy − concessions + other income) − operating expenses (excluding capex, debt service, taxes). NOI yield = NOI / cost basis.
• Going-in vs going-out cap rates — going-in (acquisition basis), exit (residual sale assumption); reversion accounts for terminal value.
• IRR internal rate of return — leveraged equity IRR target 12-25% depending on strategy (core 6-8%, core-plus 8-11%, value-add 12-18%, opportunistic 18-25%+).
• Cash-on-cash = annual cash flow / equity invested; first-year measure, ignores time value.
• DCF discounted cash flow — Argus Enterprise is the de facto industry-standard software for CRE underwriting; CoStar, Yardi, MRI, RealPage compete on related tooling.

Financing sources

• Banks — depository institutions hold ~USD 3T+ of CRE loans; regional banks disproportionately exposed (Signature, First Republic, Silicon Valley Bank failures March 2023 attributed partly to non-CRE causes but reverberated through CRE lending appetite). Construction lending dominated by banks.
• Life insurance companies — ~USD 750B CRE loan AUM; long-duration, low-leverage, lower-rate; specialty in trophy assets. MetLife Investment Management, Pacific Life, Northwestern Mutual, PGIM Real Estate, New York Life, Mutual of Omaha, Principal, Symetra, TIAA-Nuveen, Voya, Allianz.
• CMBS conduit — non-recourse, 10-year fixed-rate balloon, single-asset or pool. ~USD 70-100B annual issuance pre-2022, ~USD 40B 2023, recovering 2024-25. Conduit sponsors: J.P. Morgan, Goldman Sachs, Wells Fargo, Citi, Deutsche Bank, BMO, Morgan Stanley, Barclays.
• SASB CMBS — single-asset single-borrower; large trophy financings ($500M-$3B+); often floating-rate.
• CRE CLO — collateralized loan obligation backed by transitional/bridge multifamily loans; floating-rate; major issuers Arbor, KKR, Blackstone, MFA, Bridge Investment, Greystone, Walker & Dunlop. ~USD 30B annual peak 2021, ~USD 5B 2023 trough, USD 15-20B 2024-25 recovery.
• GSE multifamily — Fannie Mae DUS Delegated Underwriting and Servicing, Freddie Mac Multifamily Optigo. Combined FHFA conservatorship volume cap ~USD 70-80B/year each. Single largest source of multifamily debt in the US.
• Mezzanine and preferred equity — subordinate to first mortgage; pledge of LP/membership interests rather than real property; high single-digit to mid-teens coupons.
• Debt funds — non-bank floating-rate bridge lenders: Blackstone Real Estate Debt Strategies (BREDS), KKR Real Estate Credit, Apollo CRE Finance, Mesa West (Morgan Stanley), Ares Real Estate Debt, Brookfield Real Estate Debt, Starwood Property Trust (STWD; listed REIT), Madison Realty Capital, Pacific Western/PacWest, Ladder Capital, Acres Commercial Realty. Annaly Capital (NLY; agency MBS + CRE), AGNC (agency MBS-only).
• Sale-leaseback / net lease — Realty Income (O; “the monthly dividend company”), Spirit Realty (acquired by Realty Income 2024), National Retail Properties (NNN), Agree Realty (ADC), STORE Capital (taken private 2022 by GIC/Oak Street/Blue Owl), W.P. Carey (WPC), Essential Properties (EPRT), VICI, EPR Properties.

Lifecycle

Acquisition → financing → operations → value-creation (lease-up, repositioning, capex) → refinance → eventual disposition. Each stage has distinct risks: entitlement, environmental (Phase I/II ESA), title, survey, zoning, market, leasing, refinance, exit. Loss-of-rent during repositioning is the value-add risk; markets often misprice it.

Office CRE bust 2023-2025

The most distinctive single dislocation of the 2022-25 cycle. Remote/hybrid work dropped office utilization from ~95% pre-pandemic to 55-60% (Kastle Systems badge swipe data) by 2024 across major markets. Vacancy in central business districts:

• Manhattan — overall ~17%, premium Park Avenue ~9%, Class B Midtown ~22% (Cushman & Wakefield Q4 2024).
• San Francisco — ~37% direct + sublet (CBRE 2024).
• Downtown Los Angeles — ~32%.
• Chicago Loop — ~25%.
• Houston — ~25% (long-running energy-driven).
• Washington DC — ~22%.

Distressed sales 2023-2025: 122 Hawthorne St San Francisco sold for ~USD 0.18 on the dollar of 2019 financing 2024; Park Avenue Tower NYC sold by SL Green at ~50% discount 2024; 1740 Broadway Blackstone keys-back 2023; MetLife Tower 11 Madison survived; widespread CMBS modifications, A/B-note bifurcations, extensions, key give-backs. Boston Properties (BXP), Vornado (VNO), SL Green (SLG) equity prices fell 40-60% peak-to-trough 2022-24. Brookfield keys-back of two LA office towers (Gas Company Tower + 777 Tower) February 2023 USD 784M default.

REITs (Real Estate Investment Trusts)

Structure

Created by the Real Estate Investment Trust Act of 1960 (signed by Eisenhower September 14 1960). A REIT is a pass-through entity for tax purposes; no corporate income tax provided it meets ongoing requirements:

• Distributes ≥90% of taxable income as dividends (typically distributes 100% to avoid any entity-level tax).
• At least 75% of total assets are real estate, cash, or government securities.
• At least 75% of gross income from real estate (rent, mortgage interest, real estate sale gains).
• At least 95% of gross income from those plus passive sources (dividends, interest).
• Owned by ≥100 shareholders.
• Top 5 shareholders own ≤50% (5/50 rule; pension fund look-through under TRA 1993).

Major US listed REITs (market cap 2024-2025)

• Prologis (PLD) — ~USD 105B; industrial.
• Equinix (EQIX) — ~USD 80B; data center / interconnection.
• American Tower (AMT) — ~USD 95B; cell towers.
• Welltower (WELL) — ~USD 80B; senior housing + skilled nursing.
• Public Storage (PSA) — ~USD 50B; self-storage.
• Realty Income (O) — ~USD 50B; single-tenant net lease.
• Digital Realty (DLR) — ~USD 45B; data center.
• Simon Property Group (SPG) — ~USD 50B; mall.
• Crown Castle (CCI) — ~USD 40B; cell towers (under activist pressure 2024 from Elliott to spin off fiber).
• SBA Communications (SBAC) — ~USD 22B; cell towers.
• AvalonBay (AVB), Equity Residential (EQR), Camden (CPT), Essex (ESS), MAA, UDR — multifamily.
• Alexandria Real Estate Equities (ARE) — life sciences office.
• Vici Properties (VICI) — gaming triple net (owns most Las Vegas Strip real estate including Caesars Palace, MGM Grand land trust, Venetian land).

Total US REIT market capitalization ~USD 1.4T 2024 (Nareit T-Tracker). Sector ETFs: VNQ Vanguard Real Estate ETF (~USD 35B AUM), IYR iShares US Real Estate, REM mortgage REIT ETF, SCHH Schwab, RWR SPDR.

REIT-specific metrics

• FFO funds from operations — net income + real estate depreciation/amortization − gains on property sales + losses (Nareit FFO white paper definition). Adjusts for the non-cash depreciation that GAAP imposes on income-producing real estate.
• AFFO adjusted FFO — FFO − recurring capex − straight-line rent − leasing commissions − tenant improvements. A better proxy for distributable cash flow.
• NAV net asset value — sum-of-the-parts asset value minus liabilities; computed bottom-up by analyst (Green Street, Mizuho, BMO, JPMorgan, Wells Fargo, BofA, Citi). Premium/discount-to-NAV is a key trading signal.
• Debt/EBITDA — leverage; 4-6x typical investment-grade REIT.
• Net debt/gross asset value — alternative leverage measure.
• Same-store NOI growth — organic operating performance.

Mortgage REITs (mREITs)

Own residential or commercial mortgage debt rather than physical property. Agency mREITs (Annaly NLY, AGNC, Two Harbors TWO, Arbor ABR, Ellington Financial EFC) lever agency MBS portfolios 6-9x. Non-agency mREITs (PennyMac Mortgage PMT, MFA, New Residential / Rithm Capital RITM) cover NQM, MSR, CRT. CRE mREITs (Blackstone Mortgage Trust BXMT, Starwood STWD, KREF, Apollo Commercial ARI, Ladder LADR) write CRE first mortgages. Higher dividend yields (10-15%) reflect higher risk and book-value volatility.

Non-listed REITs and the BREIT controversy

Blackstone Real Estate Income Trust (BREIT) — perpetual-life non-traded REIT launched 2017; peaked USD 70B+ AUM 2022. November-December 2022 redemption requests exceeded 2% monthly / 5% quarterly limits triggering proration (gated). Critics argued NAV-based pricing (~10% above public REIT proxies) under-marked private real estate. Blackstone honored gating through 2023 and exited the prorated state in early 2024 as redemptions normalized. Similar structures: Starwood Real Estate Income Trust (SREIT), Ares Real Estate Income Trust (AREIT), JLL Income Property Trust (JLLIPT), Hines Global Income Trust, KKR Real Estate Select Trust (KREST). The category is regulated under Reg 506 (accredited investors only) for most products.

Private real estate funds

Fund styles

• Core — stabilized cash-flowing assets; low leverage (30-50%); target IRR 7-9%; bench: NCREIF ODCE NFI-ODCE Open-End Diversified Core Equity index.
• Core-plus — slight leverage on core; modest value-add; 9-12% IRR target.
• Value-add — repositioning, lease-up, redevelopment; 50-65% leverage; 12-18% IRR target.
• Opportunistic — development, distressed, complex; 65%+ leverage; 18-25%+ IRR target.

Major fund managers

• Blackstone Real Estate — ~USD 340B AUM 2024; Real Estate Partners X (BREP X) closed April 2023 at USD 30.4B, the largest real estate fund ever raised.
• Brookfield Asset Management — Brookfield Strategic Real Estate Partners (BSREP V fundraise ~USD 14B 2024-25).
• KKR Real Estate — KREP V fundraise 2024.
• Starwood Capital Group — Sternlicht’s flagship; Starwood Distressed Opportunity X.
• GLP Capital Partners, Hines, Crow Holdings, Carlyle Real Estate, TPG Real Estate, Bain Capital Real Estate, Ares Real Estate, Oaktree Real Estate, PIMCO Real Estate.
• Public-pension and sovereign LPs — CalPERS, CalSTRS, NYSCRF, Texas TRS, Oregon PERS, Ontario Teachers, OMERS, CPPIB, GIC, Norges Bank (NBIM), ADIA, KIA.

Fund mechanics

• Capital calls and contributions — committed capital drawn over 3-5 year investment period.
• Management fee — typically 1.5-2.0% on committed capital during investment period, on invested NAV thereafter.
• Carried interest — typically 20% over an 8% preferred return.
• Waterfall — return of capital → preferred return (8% IRR pref typical) → catch-up (50/50 or 100% GP catch-up) → 80/20 promote split → sometimes super-promote tiers (e.g., >20% IRR splits 70/30 or 60/40).
• GP commitment / co-invest — sponsor typically commits 1-5% of fund size alongside LPs.

Development

• Pro forma — multi-year project model; sources and uses; construction draw schedule; lease-up curve; stabilization; sale or refinance exit.
• Cost components — land, hard cost (construction), soft cost (architect, engineer, legal, financing fees, marketing), contingency (typically 5-10%), financing carry, FF&E for hotel/multifamily, leasing costs.
• Construction loan — typically 50-70% LTC loan-to-cost, recourse for guarantor net worth + liquidity covenants; interest reserve baked in; draws on monthly title-insured certified percent-complete; permanent takeout commitment (“forward perm” agency) for multifamily.
• Entitlement risk — zoning, variance, site plan approval, environmental review (NEPA federal, CEQA California, SEQRA NY), historic preservation, community board.
• Construction risk — labor (skilled trades shortage), materials (lumber 2020-21, steel, copper), schedule, soils, weather, defects.
• Lease-up risk — absorption velocity; concessions; market shifts during construction.
• Exit risk — cap rate at stabilization vs underwritten; market liquidity; interest-rate environment.

Securitization deep dive: CMBS

A conduit CMBS deal pools ~30-100 commercial mortgages from various property types into a trust. Typical structure:

• Loans 10-year fixed-rate (some 5-year now), interest-only or partial-IO, 65-75% LTV, 1.30-1.50x DSCR.
• Tranching: AAA (super-senior), AAA (junior super-senior), AA, A, BBB+, BBB, BBB- (the BBB- is the lowest investment-grade), BB, B, NR (non-rated B-piece). Risk retention 5% horizontal or eligible vertical.
• B-piece buyers dominate the equity-attachment investment: KKR Real Estate, Rialto Capital (Lennar-related), Eightfold Real Estate Capital, LNR Partners (now KingStreet), Torchlight, RAIT Financial (defunct), Prima Capital, Cerberus.
• Special servicer named in PSA pooling and servicing agreement; controls workout, modification, foreclosure once a loan transfers from master servicer. Major special servicers: KingStreet/LNR, Midland Loan Services (PNC), Rialto, CWCapital (Fortress), Trimont, C-III/SitusAMC.
• CMBX index — synthetic TRS on subordinate tranches by vintage; CMBX 6 (2012 vintage retail-heavy) and CMBX 14/15 (recent office-heavy) drove “Big Short 2.0” trades 2017-2025 (Carl Icahn, Catie Wood, Daniel Loeb publicly known shorters).

Tax framework

• Section 1031 like-kind exchange — defers capital gains on real property exchanged for like-kind real property within 45-day identification + 180-day completion windows. Tax Cuts and Jobs Act 2017 narrowed to real property only (personal property removed). Heavily used by syndicates, DSTs Delaware statutory trusts (passive 1031 vehicles).
• Qualified Opportunity Zones (QOZ) — TCJA 2017; ~8,700 designated census tracts. Benefits: temporary deferral of capital gains invested within 180 days through 2026; basis step-up 10% if held 5 years, additional 5% if 7 years (no longer achievable after 2023 since gain recognized 2026); permanent exclusion of QOZ-property appreciation if held 10 years. ~USD 100B+ raised; effectiveness in driving genuinely targeted investment debated (Brookings 2023 reviews).
• Cost segregation — accelerates depreciation on ≤39-year commercial / 27.5-year residential by reclassifying components (carpet, fixtures, equipment) into 5/7/15-year classes; combined with bonus depreciation (100% 2017-2022, 80% 2023, 60% 2024, 40% 2025, 20% 2026, then 0%) creates large early-year deductions.
• 199A QBI — 20% qualified business income deduction; applies to pass-through real estate income, sunsets after 2025 absent extension.
• FIRPTA — Foreign Investment in Real Property Tax Act 1980; 15% withholding by purchaser on gross sales price when seller is foreign person; refundable against actual tax due.
• Pass-through investor structures — partnerships (LP, LLC), DSTs Delaware statutory trusts (1031 passive replacements; max 100 investors; “seven deadly sins” trust restrictions), TICs tenant-in-common (limited use post-2008), REITs (broadly held).
• Property tax — local ad valorem; major cost item; appealed assessments common.

Brokerages

• Commercial — CBRE Group (CBRE, market #1 globally, ~USD 32B revenue 2024), JLL Jones Lang LaSalle (JLL, ~USD 21B), Cushman & Wakefield (CWK), Newmark (NMRK; spun from BGC 2017), Colliers International (CIGI), Marcus & Millichap (MMI; private capital broker), Avison Young, Eastdil Secured (capital markets focused), HFF (now JLL Capital Markets), Mission Capital (Marcus & Millichap-owned).
• Residential — Anywhere Real Estate (HOUS, formerly Realogy: Century 21, Coldwell Banker, ERA, Better Homes and Gardens Real Estate, Sotheby’s International Realty), RE/MAX (RMAX), Keller Williams (private), Compass (COMP), eXp World Holdings (EXPI), Berkshire Hathaway HomeServices, Howard Hanna.

Sitzer/Burnett antitrust verdict and the buyer-broker commission revolution

Sitzer/Burnett v. NAR et al. — Missouri federal jury October 31 2023 found NAR National Association of Realtors and HomeServices of America, Anywhere, Keller Williams, RE/MAX liable for USD 1.78B (trebled to ~USD 5.4B under Sherman Act) in damages for conspiring to inflate buyer-side commissions. Subsequent NAR settlement March 15 2024: USD 418M payment + structural relief — buyer-broker compensation cannot be advertised on MLS, buyer-broker agreements required in writing before showing. Effective August 17 2024 implementation across MLSs. Major brokerage settlements: HomeServices USD 250M, Anywhere USD 83.5M, RE/MAX USD 55M, Keller Williams USD 70M. Likely impact: gradual decoupling of seller-paid buyer commissions; lower aggregate commissions over time; flat-fee/discount models (Redfin, Houwzer); buyer concierge advisory models; still-evolving 2025.

Proptech

• Marketplaces and listings — Zillow (Z, ~USD 14B mkt cap; Zillow Offers iBuyer wind-down November 2021 with USD 304B writedown), Redfin (RDFN; brokerage + listings; acquired Bay Equity 2022), Realtor.com (Move Inc., News Corp), Homes.com (CoStar’s residential push 2024-25), Trulia (Zillow).
• iBuyers — Opendoor (OPEN; SPAC December 2020; struggling), Offerpad (OPAD), Zillow Offers (closed), Redfin Now (paused).
• Construction and property management — Procore (PCOR; construction project management), VTS (commercial leasing and asset management), AppFolio (APPF; residential property mgmt SaaS), Yardi (privately held; dominant in property mgmt software), MRI Software (Vista Equity-owned), RealPage (Thoma Bravo-owned; AI rent-setting Yieldstar antitrust litigation pending 2024-25).
• Listings and data — CoStar Group (CSGP; CoStar + LoopNet + STR + Apartments.com + Ten-X + Homesnap + Homes.com).
• Tenant experience — VTS, Equiem, HqO.

Adjacent

• investments-and-portfolio-management — real estate allocation, REIT vs private RE return comparisons, illiquidity premium, ODCE benchmark.
• corporate-finance-and-markets — REIT IPOs, going-private LBOs of REITs, taxable REIT subsidiaries (TRS), UPREIT/DownREIT structures.
• derivatives-and-quant-finance — CMBX synthetic indices, rate hedging for floating-rate CRE CLO, interest-rate caps and swaps.
• accounting-foundations — ASC 842 lease accounting, ASC 360 impairment, real estate fund GAAP vs fair-value reporting.
• _index — housing supply elasticity, urbanization, real estate as a wealth store, rental affordability.
• _index — Sitzer/Burnett antitrust, ERISA real estate exemptions, REIT tax compliance.
• insurance-and-actuarial — life insurer CRE mortgage AUM, climate-driven coverage withdrawal impacting marketability.