3.4 Mobile Home and Specialized Dwelling Coverage

Why Mobile Homes Need Special Forms

Manufactured (mobile) homes are insured by endorsing a Homeowners or Dwelling form with the Mobile Home endorsement (HO/MH or the ISO mobilehome program) rather than by a stand-alone HO-3. The endorsement modifies a base form — most commonly an HO-2 broad form or HO-3 — to fit a transportable structure. The defining differences:

• Coverage A insures the mobile home itself (often settled on a stated-amount or ACV basis, not unlimited replacement cost, because depreciation is rapid).
• Coverage C is typically 40% of Coverage A, matching the Homeowners default.
• Coverage for transportation/relocation can be added — up to a sublimit (commonly $500) for reasonable removal costs when the home is moved to avoid imminent loss.

Exam trap: A mobile home is not automatically eligible for an HO-3; it requires the Mobile Home endorsement, and settlement is frequently stated amount or ACV, not guaranteed replacement cost.

Specialized Dwelling Situations

The DP program flexes to cover risks that fall outside owner-occupied homes:

• Seasonal or secondary dwellings — a DP form covers a vacation cabin; underwriters may attach a vacancy/occupancy restriction because unoccupied property is higher-risk.
• Rental dwellings — a landlord uses a DP form for the structure plus Coverage D (fair rental value); the tenant buys their own contents/liability coverage.
• Dwellings under construction (builders) — a builder's risk or the dwelling-under-construction endorsement insures rising value during the build and prorates premium.
• Vacant dwellings — V&MM and certain water losses are suspended once a dwelling is vacant beyond 60 consecutive days.

Vacancy / Occupancy Worked Example

A landlord's rental dwelling becomes vacant after a tenant moves out. On day 75 of vacancy, vandals damage the interior. Because V&MM coverage is suspended after 60 consecutive days of vacancy, the claim is denied — even though the dwelling is otherwise fully insured. The fire peril, by contrast, generally continues; the suspension targets vandalism, glass breakage, and certain water losses.

Split Limits and Liability Add-On

When a personal liability supplement is endorsed onto a dwelling or mobile home policy, liability is often expressed in split limits, e.g., 100/300/50:

• $100,000 bodily injury per person
• $300,000 bodily injury per occurrence
• $50,000 property damage per occurrence

If an insured is liable for injuries to four people at $80,000 each ($320,000 total), the policy pays at most $100,000 per person and $300,000 per occurrence. So it caps each claimant at $80,000 (under the $100,000 per-person cap) but the four claims total $320,000, which exceeds the $300,000 per-occurrence ceiling — the insurer pays $300,000 and the insured owes the remaining $20,000.

Loss Settlement Recap

Mobile homes and many specialized dwellings settle on ACV or stated amount, while site-built DP-2/DP-3 dwellings reach replacement cost only when the coinsurance condition is satisfied. Matching the right form, settlement basis, and occupancy condition to the exposure is the core skill the exam tests in this section.

Builders Risk and Dwellings Under Construction

A dwelling being built has a value that climbs as work progresses, so a flat limit would over- or under-insure it. The dwelling-under-construction approach insures the building at its completed value but prorates the premium to reflect the rising amount actually at risk during the policy term. Coverage commonly suspends the usual occupancy expectation until the home is finished, and theft of building materials may be limited until the structure is enclosed and lockable.

Seasonal and Vacant Exposures

Underwriters treat occupancy as a major rating factor. A seasonal dwelling occupied only part of the year is acceptable but may carry tightened theft or water-damage terms. A truly vacant dwelling — empty of both people and contents — is the highest-risk class, which is why V&MM, glass breakage, and certain water losses suspend after 60 consecutive days of vacancy. Distinguish vacant (no people, no contents) from unoccupied (furnished but temporarily empty); the vacancy provision keys on the stricter vacant condition.

Liability and Medical Payments Supplement

Because every base DP form is property-only, an owner-occupant typically adds the Personal Liability Supplement, which grafts on:

• Coverage L – Personal Liability for bodily injury and property damage the insured becomes legally liable to pay, including defense costs.
• Coverage M – Medical Payments to Others for medical expense regardless of fault, with a small per-person sublimit (e.g., $1,000–$5,000).

Liability may be written as a single limit (one combined amount) or as split limits as shown above. The supplement does not apply to a tenant's liability — a renter buys their own tenant policy.

Exam tip: A base DP form gives zero liability. If a question describes an injured guest suing the dwelling owner and no liability supplement was added, the policy pays nothing for that claim.