Form HCD MP 514 at a glance
What it is: HCD MP 514 is the Mobilehome and Special Occupancy Park Construction Plan Review Booklet, provided as a guideline for construction permit applicants.
Where and when to file: Submit your application, two (2) sets of plans with calculations and specifications, and all required fees to the appropriate HCD Area Office after the project package is complete.
This form is for use by permit to construct applicants for mobilehome parks, recreational vehicle parks, or additions/improvements.
What to bring and attach to Form HCD MP 514
Provide “will-serve” letters from gas, electric, water, and sewer providers.
Provide a copy of your worker's compensation insurance coverage.
Provide written evidence of compliance with the California Environmental Quality Act (Public Resources Code, division 13, commencing with section 21000), typically provided on the use permit.
A filled-in Form HCD MP 514 example: a park project and its contacts

How to fill out Form HCD MP 514, box by box
Project name, applicant and contact person

Enter the city or county in which the project is located.
Enter the Project name, Project street address, Assessor's Parcel # and Description of work.
Under Applicant / Owner, enter the Phone number and Address.
For the Architect / Engineer / Contractor, enter the name, Role, Phone number and Address.
Enter the Contact person name and Phone number.
Planning signature

A permit application cannot be processed without the approval signatures from any agency checked on the form.
A Planning signature confirms the proposed construction is consistent with local planning requirements.
Planning: Upon completion, does your agency want to review the project/site prior to HCD finalizing the permit(s)? Yes or No. If yes, this form will be re-circulated prior to the final inspection for the Planning Final approval signature and Date.
Wildland Urban Interface: applicant items 1 through 3

The Wildland Urban Interface Classification is used by HCD in order to determine the correct installation of materials and construction methods for exterior wildfire exposure.
Enter the Applicant name, Date and Telephone Number.
Applicant to complete items 1 through 3: Site location of home or structure, Assessor Parcel Number (if known) and Mobilehome park name (if applicable).
Applicants are requested to submit the information with the HCD MH 415 and/or HCD MP 50 form at the time of permit application to HCD.
Section 1 - Owner/applicant

Indicate if the park is located in an unincorporated area or an incorporated area.
Enter the park owner's name(s).
Enter the applicant's name, address and telephone number (The Department will contact or correspond with the party that is entered as the applicant.)
Check the appropriate box to describe the applicant; if the box "Other" is marked, indicate the relationship to the owner.
If the requested services involve an architect or engineer, enter the architect or engineer's name, address, telephone number, and license number.
Section 2 - Description of work and valuation
Workers' compensation declaration

Item 3 - Workers' Compensation Declaration: Place a check mark next to the declaration regarding the workers' compensation coverage that applies to the contractor; if the second declaration is marked, the contractor must also provide the carrier's name and policy number; the item must be signed by the contractor and dated.
More rules for Form HCD MP 514
Before proceeding, you are encouraged to contact the appropriate Area Office to learn which local or other agency approvals are necessary for HCD to approve your project and to answer any questions relative to your project.
Separate permits are required for grading, utility construction, swimming pools, and buildings.
A separate application form is required for each building, utilities (combined), grading/drainage, etc.
Procedures for park construction are found in Part A and for park building construction in Part B.
Typically, plan review requires 4 to 6 weeks, so please plan accordingly.
Health, Public Works and Fire Protection: a permit application cannot be processed without the approval signatures from any agency checked; each agency signs to confirm the proposed construction is consistent with local health, public works and fire requirements.
An incomplete or incorrect submission will result in it being returned, additional fees being charged for resubmission, and project delays.
If your situation is different
You have grading plans
A geotechnical investigation report (3 copies) must accompany grading plans.
You have pool plans
Pool plans must have the local health department stamp upon them as well as a signature on the Mobilehome and Recreational Vehicle Government Agency Approval form or equivalent document.
Your development is within coastal zones
Obtain approval and signature from the California Coastal Commission on the Mobilehome and Recreational Vehicle Park Government Agency Approval form or equivalent document for developments within coastal zones.
Your electrical systems exceed 240 volts
Plans for systems exceeding 240 volts require the signature of a California registered electrical engineer.
Your park is an RV park
All areas of RV parks are required to comply with the disabled access requirements contained in California Building Code, title 24, chapter 11B.
Accessory structures
For accessory structures, complete Sections 1, 3, 5 and Contractor/Owner Builder Declarations.
Manufactured home or mobilehome installation
For manufactured home or mobilehome installation, complete Sections 1, 4, 5, and Contractor/Owner Builder Declarations.
An 18551 foundation system
For an 18551 foundation system, complete Sections 1, 2, 5 and Contractor/Owner Builder Declarations.
Park utilities
For park utilities, complete Sections 1, 2, 5 and Contractor/Owner Builder Declarations.
New parks and permanent buildings
For new parks and permanent buildings, complete Sections 1, 2, 5 and Contractor/Owner Builder Declarations.
Common questions about Form HCD MP 514
Who signs it?
SECTION 5 - PARK OWNER, OPERATOR OR MANAGER SIGNATURE: The signature of the park owner, operator or manager is required along with the date the form is signed. This signature is an acknowledgment that the park is aware and approves of the services being requested in this application. Item 5 - Certification: The certification must be signed and dated by the contractor or agent on behalf of the contractor.
Are there fees?
Fees will be charged for preliminary plan check meetings as a technical service fee ($238 per hour, $238 minimum) (checked November 8, 2026). In addition, the Area Office staff will calculate construction and plan check fees.
Is there a penalty?
WARNING: failure to secure workers' compensation coverage is unlawful, and shall subject an employer to criminal penalties and civil fines up to one hundred thousand dollars ($100,000), in addition to the cost of compensation, damages as provided for in Section 3706 of the Labor Code, interest, and attorney's fees (checked November 8, 2026).
What am I certifying when I sign?
By signing you certify that you have read this application and state that the information is correct.
Sources
[1] Form HCD MP 514 (Rev. 05/24), Mobilehome and Special Occupancy Park Construction Plan Review Booklet, California Department of Housing and Community Development (the Official source link on this page).



