ApartmentInsured

Apartment Insurance Data & Statistics

50 citable facts about apartment and multifamily insurance. Each fact includes a permalink anchor and source attribution for easy citation.

Industry Size

1

The U.S. multifamily housing market represents approximately $3.4 trillion in total asset value.

Source: NMHC tabulations of U.S. Census Bureau American Community Survey#
2

There are approximately 44.2 million apartment units across the United States.

Source: NMHC/NAA Apartment Demand Study#
3

Multifamily housing accounts for roughly 37% of all U.S. rental housing units.

Source: U.S. Census Bureau American Housing Survey#
4

The average apartment building in the U.S. contains approximately 50 units.

Source: NMHC tabulations of CoStar data#
5

Institutional investors own approximately 55% of apartment units with 50 or more units.

Source: NMHC tabulations of U.S. Census Bureau Rental Housing Finance Survey#

Premium Ranges

6

Apartment building property insurance typically costs between $200 and $500 per unit per year, varying by location, construction, and coverage terms.

Source: ApartmentInsured market observations, 2024–2025 renewal data#
7

Total insurance costs for a 100-unit garden-style apartment complex typically range from $40,000 to $120,000 per year.

Source: ApartmentInsured market observations#
8

Wind and hail deductibles in Texas and Oklahoma hail-belt markets commonly range from 2% to 5% of total insured value.

Source: ISO Commercial Lines Manual, wind/hail deductible endorsements#
9

Named storm deductibles in Florida coastal markets typically range from 3% to 5% of TIV.

Source: Florida Office of Insurance Regulation rate filings#
10

Loss of rents coverage typically covers 12 months of gross rental income, with some policies extending to 18 or 24 months.

Source: Fannie Mae Multifamily Selling and Servicing Guide, Part III, Chapter 6#

Claims & Losses

11

Water damage (burst pipes, plumbing failures, appliance leaks) accounts for the largest share of apartment building insurance claims by frequency.

Source: ISO PropertyCasualty360 loss data analysis#
12

The average water damage claim for an apartment building ranges from $15,000 to $75,000 depending on building size and scope.

Source: ApartmentInsured aggregate claims observations#
13

Fire claims, while less frequent than water damage, carry the highest average severity for apartment buildings.

Source: NFPA Fire Loss in the United States annual report#
14

Slip-and-fall incidents in common areas represent the most frequent general liability claim type for apartment properties.

Source: ISO General Liability loss cost data#
15

Hail damage claims in Texas and Oklahoma can exceed $1 million for large apartment complexes after a significant storm event.

Source: Texas Department of Insurance catastrophe loss data#

Lender Requirements

16

Fannie Mae DUS loans require replacement cost property coverage with no co-insurance provision or an agreed amount endorsement.

Source: Fannie Mae Multifamily Selling and Servicing Guide, Part III, Chapter 6, Section 601#
17

Freddie Mac Optigo loans require property coverage equal to at least 100% of replacement cost for the improvements.

Source: Freddie Mac Multifamily Seller/Servicer Guide, Chapter 58#
18

HUD/FHA multifamily loans require commercial general liability coverage with minimum limits of $1 million per occurrence.

Source: HUD Multifamily Accelerated Processing Guide (MAP), Chapter 7#
19

Most agency lenders require loss of rents/business income coverage for a minimum of 12 months of gross potential income.

Source: Fannie Mae DUS Guide, Part III, Chapter 6; Freddie Mac Guide, Chapter 58#
20

Fannie Mae requires flood insurance for any property located in a Special Flood Hazard Area, with coverage at least equal to the outstanding loan balance.

Source: Fannie Mae Multifamily Selling and Servicing Guide, Part III, Chapter 6, Section 602#

Market Conditions

21

The habitational insurance market has experienced significant rate increases since 2020, with many apartment owners seeing premium increases of 20% to 50% or more at renewal.

Source: Council of Insurance Agents & Brokers Commercial Property/Casualty Market Survey#
22

Several admitted carriers have reduced their appetite for habitational risks in high-CAT states, pushing more apartment accounts into the excess and surplus lines market.

Source: AM Best Surplus Lines Market Review#
23

Reinsurance treaty costs for habitational programs have increased substantially, contributing to higher premiums passed through to apartment owners.

Source: Guy Carpenter Global Property Catastrophe Rate-on-Line Index#
24

Apartment owners in Florida, Louisiana, and coastal Texas face the most constrained insurance markets, with fewer carrier options and higher pricing.

Source: WSIA Surplus Lines Stamping Office data; Florida OIR market reports#
25

The E&S market share for habitational property insurance has grown significantly as admitted carriers have tightened underwriting standards.

Source: AM Best U.S. Surplus Lines market segment report#

Coverage Gaps

26

Co-insurance penalties remain one of the most common and costly coverage gaps for apartment owners, triggered when the insured value falls below 80% to 90% of replacement cost.

Source: ISO Commercial Property Conditions Form CP 00 30#
27

Many apartment owners carry inadequate ordinance or law coverage, which can leave them responsible for the cost of bringing damaged buildings up to current code.

Source: ISO Ordinance or Law Coverage endorsement CP 04 05#
28

Equipment breakdown coverage is frequently excluded from standard property policies but covers critical apartment systems including HVAC, elevators, and boilers.

Source: ISO Equipment Breakdown Coverage Form EB 00 20#
29

Assault and battery sublimits on general liability policies for apartments are often set at levels far below potential claim values.

Source: ISO CGL policy form CG 00 01, typical endorsement modifications#
30

Many apartment property policies contain ACV (actual cash value) provisions on roofing, which can result in significant depreciation deductions on roof claims.

Source: ISO Commercial Property Actual Cash Value endorsement#

State-Specific Highlights

31

Florida's Citizens Property Insurance Corporation requires apartment buildings in wind-eligible areas to obtain private windstorm coverage or accept Citizens' wind-only policies with deductibles typically set at 2% to 5% of insured value.

Source: Citizens Property Insurance Corporation Underwriting Rules Manual#
32

Texas wind and hail percentage deductibles for apartment buildings commonly range from 2% to 5% of total insured value, with some carriers pushing to 5% or higher in North Texas hail corridor counties.

Source: Texas Department of Insurance rate filings and carrier endorsements#
33

California's soft-story retrofit ordinances in Los Angeles and San Francisco require owners of wood-frame apartment buildings with tuck-under parking to complete seismic upgrades, and non-compliant buildings face higher insurance costs or coverage restrictions.

Source: City of Los Angeles Ordinance No. 183893; San Francisco Building Code Chapter 34B#
34

New York City Local Law 11 (now Local Law 152) requires facade inspections every five years for buildings over six stories, and unfavorable inspection reports can trigger underwriting surcharges or coverage limitations on apartment property policies.

Source: NYC Administrative Code § 28-302.1 (Local Law 11/FISP)#
35

Louisiana's apartment insurance market contracted sharply after Hurricanes Laura (2020) and Ida (2021), with over a dozen admitted carriers exiting the state and more than 60% of coastal apartment accounts moving to surplus lines carriers by 2023.

Source: Louisiana Department of Insurance market reports; WSIA stamping office data#

Property Type Benchmarks

36

High-rise apartment buildings (7+ stories) typically cost 30% to 60% more to insure per unit than garden-style apartments due to higher replacement costs, elevator exposure, and fire protection complexity.

Source: ApartmentInsured market observations; ISO construction class differentials#
37

Student housing properties experience claims frequency roughly 30% to 50% higher than conventional apartments, driven by higher occupant turnover, vandalism, and water damage incidents.

Source: ApartmentInsured aggregate loss data; carrier habitational program benchmarks#
38

Mixed-use apartment buildings with ground-floor commercial tenants typically see premium loading of 15% to 30% above all-residential buildings due to added liability exposure and differing occupancy classifications.

Source: ISO Commercial Lines Manual occupancy class differentials#
39

Nonprofit operators of senior and affordable housing face directors and officers (D&O) liability exposure that conventional apartment owners do not, with D&O claims averaging $35,000 to $100,000 in defense costs alone.

Source: Chubb Nonprofit D&O claims benchmark data#
40

Manufactured housing communities experience wind damage claim frequency roughly two to three times higher than site-built apartment complexes in the same geography, according to industry loss data.

Source: HUD manufactured housing wind zone standards (24 CFR Part 3280); IBHS post-event damage assessments#

Underwriting Factors

41

Roof age and condition is consistently the single most important underwriting factor for apartment property insurance, with many carriers declining to quote buildings that have roofs older than 15 to 20 years.

Source: ApartmentInsured underwriting survey of habitational carriers, 2024#
42

Apartment owners with five or more consecutive claims-free years can typically negotiate premium discounts of 10% to 25% from carriers, depending on the market and overall loss history.

Source: ApartmentInsured renewal benchmarking data#
43

Buildings equipped with automatic fire sprinkler systems receive insurance credits ranging from 15% to 40% off property premiums, with additional credits available for monitored fire and burglar alarm systems.

Source: ISO Commercial Fire Rating Schedule protective device credits#
44

Federal Pacific Electric (FPE) Stab-Lok and Zinsco electrical panels are considered defective by most insurers and can result in coverage declinations, required panel replacement, or exclusions for electrical fire losses.

Source: U.S. Consumer Product Safety Commission recall data; carrier underwriting bulletins#
45

Polybutylene plumbing, installed in an estimated 6 to 10 million U.S. homes and apartments between 1978 and 1995, is flagged as a significant underwriting concern due to its high failure rate and resulting water damage claims.

Source: Cox v. Shell Oil Co. class action settlement documentation; carrier underwriting guidelines#

Compliance & Regulatory

46

The National Flood Insurance Program (NFIP) caps commercial building coverage at $500,000 for the structure and $500,000 for contents, well below the replacement cost of most apartment buildings, requiring private excess flood policies to fill the gap.

Source: National Flood Insurance Act of 1968 (42 U.S.C. § 4013); NFIP Flood Insurance Manual#
47

Fair housing discrimination claims cost apartment owners an average of $50,000 to $150,000 in legal defense and settlement costs, and HUD-initiated fair housing testing of apartment communities has increased in recent years.

Source: Fair Housing Act (42 U.S.C. § 3601 et seq.); National Fair Housing Alliance annual report#
48

OSHA requires apartment owners and management companies to comply with general industry safety standards for maintenance workers, including lockout/tagout procedures, fall protection, and hazard communication programs.

Source: 29 CFR 1910 (OSHA General Industry Standards)#
49

The ADA requires apartment properties built after 1991 to maintain accessible common areas including leasing offices, parking, pools, and laundry rooms, and non-compliance can trigger lawsuits with statutory damages and injunctive relief.

Source: Americans with Disabilities Act Title III (42 U.S.C. § 12181 et seq.); 28 CFR Part 36#
50

At least 18 states require landlords to disclose certain insurance information to tenants, and several states mandate that landlords carry minimum liability coverage amounts, though specific requirements vary widely by jurisdiction.

Source: National Conference of State Legislatures landlord-tenant law database#

Methodology Note

Data on this page references publicly available sources including NMHC/NAA industry reports, Fannie Mae and Freddie Mac servicing guides, HUD multifamily handbooks, FEMA/NFIP documentation, ISO rating manuals, and aggregate market observations. Premium ranges are typical observations and are not quotes. Individual premiums depend on property-specific factors. This content provides educational information, not insurance advice. Sources are attributed per fact above.

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