Hawaii Mobile Home Park Rent Control: 2026 Guide

Is mobile home lot rent controlled in Hawaii?

Short answer: no. Hawaii has no statewide rent control, no percentage cap on increases, and — unlike California, Florida, or Oregon — no mobile-home-park-specific statute governing lot rent. If you rent out a pad, the amount you charge and how much you raise it is not capped by state or county law.

There is an unusual wrinkle in Hawaii: the state has essentially no mobile home parks. Zoning keeps house trailers and mobile homes out of agricultural and rural districts as dwelling units, and the counties do not host trailer parks. So the 'lot rent' scenario is largely theoretical here.

Because of that, one legal question has never been cleanly resolved: whether a lot-only (pad-only) tenancy is even covered by the state Residential Landlord-Tenant Code (HRS Chapter 521). We flag that uncertainty below rather than paper over it — it drives whether the statute's notice rules apply to you at all.

No rent cap — and no percentage limit

Hawaii sets no ceiling on rent amounts. HRS 521-21(a) leaves the number to the parties: the landlord and tenant 'may agree to any consideration, not otherwise prohibited by law, as rent.' There is no dollar cap, no percentage cap, and no CPI- or AMI-based formula limiting an increase at the state level.

This applies to lot rent the same way it applies to any other rent: the state does not tell you the maximum you can charge or the maximum size of an increase. The only statewide handle on increases is timing (advance notice), not amount — covered in the next section.

The only statewide rule is a notice period — and coverage of lot-only tenancies is uncertain

For tenancies covered by Chapter 521, HRS 521-21(d) requires that a month-to-month rent increase be preceded by 'written notice given forty-five consecutive days prior to the effective date of the increase' (45 days). For a tenancy shorter than month-to-month, HRS 521-21(e) requires 15 consecutive days' notice. This is a notice rule, not a cap — it controls when, not how much.

Here is the honest catch: Chapter 521 governs 'dwelling units,' and HRS 521-8 defines a dwelling unit as 'a structure, or part of a structure, which is used as a home, residence, or sleeping place.' A bare rented pad is not itself a structure. When a resident owns the mobile home and rents only the land, it is genuinely unsettled whether that lot-only tenancy is a Chapter 521 tenancy at all — and therefore whether the 45-day notice even applies.

HRS 521-7 reinforces the caution: it excludes from the Code 'a lease of improved residential land for a term of fifteen years or more.' So a long-term ground lease of a lot is affirmatively outside Chapter 521. There is little Hawaii case law resolving these edges because the state has almost no mobile home parks. Practical takeaway: if you operate a lot-only tenancy, give the 45-day notice as a safe default, but do not assume the statute settles your rights — confirm with local counsel.

No local rent control in the counties either

No Hawaii county (Honolulu, Hawaii County, Maui, Kauai) currently imposes rent control on residential rent or on mobile-home lot rent. Counties have general home-rule powers, but none has an active rent-control ordinance.

The old statutory reference to county rent control, HRS 666-20, is a 1943 wartime-emergency provision that points to county powers under sections that have since been repealed; it is effectively dead letter. Bottom line: there is no local cap on lot rent anywhere in Hawaii today.

Rent-increase rules at a glance in Hawaii

• Statewide rent cap
  None. No dollar or percentage limit on lot rent or any residential rent (HRS 521-21(a)).
• Percentage cap
  None at the state or county level. No CPI or AMI formula applies.
• Month-to-month notice
  45 consecutive days' written notice before an increase, IF the tenancy is covered by Chapter 521 (HRS 521-21(d)).
• Shorter-than-monthly notice
  15 consecutive days' written notice before an increase (HRS 521-21(e)).
• MHP-specific statute
  None. Hawaii has no mobile-home-park / lot-rent act, and essentially no mobile home parks.
• Lot-only coverage
  Uncertain. A bare pad may not be a 'dwelling unit' (a 'structure') under HRS 521-8; 15+ year land leases are excluded by HRS 521-7.
• Local rent control
  None active in any county. HRS 666-20 references repealed powers and is dead letter.

Operator best practices in Hawaii

• Build a relationship with a Hawaii MHP attorney
  Because lot-only coverage under Chapter 521 is unsettled and there is little case law, get a Hawaii landlord-tenant attorney to confirm which rules bind your specific tenancy before you raise rent or terminate.
• Give the 45-day notice as a safe default
  Even if you think Chapter 521 may not apply to a pad-only tenancy, sending written notice 45 consecutive days ahead (HRS 521-21(d)) is the low-risk practice and forecloses a notice dispute.
• Put everything in the written lease
  If Chapter 521 does not cover the lot, the lease terms are what govern rent and increases. Spell out amount, increase mechanics, and notice in writing so there is no gap to litigate.
• Do not assume a statutory cap protects or constrains you
  There is no percentage cap in either direction; do not represent to a resident that the state limits increases, and do not assume a cap shields you from anything.
• Check zoning and land-lease term first
  Agricultural/rural zoning bars mobile homes as dwellings, and a 15+ year improved-land lease is excluded from Chapter 521 (HRS 521-7) — both change the legal footing of the tenancy.
• Document notice delivery
  Keep dated proof of written notice and its effective date so you can show the 45-/15-day windows were satisfied if the tenancy is later deemed covered.