Lake County, SD - 2026 Building Permit Guide

Permit Authority

All unincorporated Lake County land. Chester and Winfred (census-designated places) fall under county jurisdiction.

Department

Lake County Planning, Zoning, and Natural Resources Office

Website

http://www.lake.sd.gov/custom/planning-and-zoning

Online Permit Portal

Application Process

1. Contact the Lake County Planning, Zoning, and Natural Resources Office to determine if a construction permit is required.
2. Obtain and complete the building permit application form.
3. Prepare site plan drawn to scale showing: property lines, all abutting roads/alleys/easements, all existing structures and fences, proposed building placement, top of foundation elevations, building dimensions, and distances to property lines.
4. Submit two (2) copies to the office and one (1) copy to the Surveyor's office with required documentation.
5. The application is reviewed by the Zoning and Building Divisions of the Lake County Plan Commission.
6. Applicant is notified if permit is approved and the fee amount is established.
7. Applicant has thirty (30) days from permit issuance to pick up the permit and pay the fee.
8. Construction must be started within six (6) months of issuance.
9. Notify the office 24 hours in advance when construction is ready for inspection. Requests received by phone or email prior to 7:30 AM will be scheduled for inspection that same day.

Typical processing time: Not publicly stated; contact department

Source: Lake County Planning, Zoning, and Natural Resources Office

General Requirements

A construction permit is required for new structures and additions in unincorporated Lake County.

Required Documents

• Completed application form
• Site plan drawn to scale showing property lines, abutting roads/alleys/easements, existing structures, proposed building placement, foundation elevations, building dimensions, and distances to property lines
• Two copies to the office and one copy to the Surveyor's office

Permit validity

Applicants have thirty (30) days from permit issuance to pick up the permit and pay the fee. Construction work must be started within six (6) months of issuance.

Building code

2021 International Building Code (IBC), 2021 International Mechanical Code (IMC), 2021 International Property Maintenance Code (IPMC), 2009 International Energy Conservation Code (IECC - voluntary), 2015 International Fire Code (IFC), National Electrical Code, State plumbing code

Contractor requirements

State registration under SDCL Chapter 36-21C required for residential contractors. Electrical and plumbing work requires state-licensed contractors.

Fees

Payment note

Contact Lake County Planning, Zoning, and Natural Resources Office for current fee schedule and payment procedures.

Work That Does NOT Require a Permit

Contact the Lake County Planning, Zoning, and Natural Resources Office to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

• Contact Lake County Planning, Zoning, and Natural Resources Office (phone)
• Email (if available) (email)

Scheduling deadline

Requests received by phone or email prior to 7:30 AM will be scheduled for inspection that same day. Owners must notify the office 24 hours in advance when construction is ready for inspection.

Inspection hours

Not publicly stated; contact department

Time windows

Not publicly detailed; contact department

Typical inspection sequence: Not publicly detailed; contact department

Additional Resources

• Building code: 2021 International Building Code (IBC), 2021 International Mechanical Code (IMC), 2021 International Property Maintenance Code (IPMC), 2009 International Energy Conservation Code (IECC - voluntary), 2015 International Fire Code (IFC), National Electrical Code, State plumbing code
• License lookup guide: South Dakota Contractor License Requirements
• Contract template: South Dakota Homeowner-Contractor Agreement
• South Dakota hub: South Dakota Contractor License & Permit Hub

Frequently Asked Questions

Lake County Building Permit FAQ

Do I need a building permit in unincorporated Lake County, SD?

A construction permit is required for new structures and additions in unincorporated Lake County.

How do I apply for a building permit in unincorporated Lake County, SD?

1. Contact the Lake County Planning, Zoning, and Natural Resources Office to determine if a construction permit is required. 2. Obtain and complete the building permit application form. 3. Prepare site plan drawn to scale showing: property lines, all abutting roads/alleys/easements, all existing structures and fences, proposed building placement, top of foundation elevations, building dimensions, and distances to property lines. 4. Submit two (2) copies to the office and one (1) copy to the Surveyor's office with required documentation. 5. The application is reviewed by the Zoning and Building Divisions of the Lake County Plan Commission. 6. Applicant is notified if permit is approved and the fee amount is established. 7. Applicant has thirty (30) days from permit issuance to pick up the permit and pay the fee. 8. Construction must be started within six (6) months of issuance. 9. Notify the office 24 hours in advance when construction is ready for inspection. Requests received by phone or email prior to 7:30 AM will be scheduled for inspection that same day.

How long does it take to get a building permit in unincorporated Lake County, SD?

Typical processing time is Not publicly stated; contact department.

How do I schedule a building inspection in unincorporated Lake County, SD?

Inspections can be scheduled via: Contact Lake County Planning, Zoning, and Natural Resources Office, Email (if available). Requests received by phone or email prior to 7:30 AM will be scheduled for inspection that same day. Owners must notify the office 24 hours in advance when construction is ready for inspection..