South Dakota to Delaware: residential contractor license reciprocity

New Castle County. The Department of Land Use licenses contractors working in unincorporated New Castle County, and this is the closest thing Delaware has to a building contractor license. A permit endorsed license is required of anyone whose construction activity needs a permit, including building contractors; a non-permit endorsed license covers NAICS Sector 23 construction activity that needs no permit. Electrical contractors are excluded because they hold the state electrician license instead, as are businesses solely engaged in subdivision and land development, DelDOT right-of-way heavy utility work and maintenance employees of state-owned facilities. Permit endorsed building contractor licenses are graded by project value and backed by a surety bond on the county's own unmodified form: Class C up to $50,000 with a $25,000 bond, Class B up to $100,000 with a $50,000 bond, Class A up to $200,000 with a $150,000 bond, and Class U for unlimited value with a $200,000 bond. A new home builder must be licensed at Class A or above and must supply a letter from a county-approved warranty company confirming it will warrant every new home built under the license; a HUD-approved manufactured or modular home installer must be at least Class B with the same warranty proof. The application also needs a current Delaware business license (a temporary resident or non-resident contractor license from the Division of Revenue is accepted), a certificate of liability insurance of at least $250,000 per occurrence and $500,000 aggregate naming NCC Department of Land Use License Processing as certificate holder, and an optional authorized agents form. The 2026 fee is $410, made up of a $400 license fee and a $10 ICC digital code access fee. There is no county examination and no experience review; the class is set by bond and project value. Apply online through the county's licensing pages; Department of Land Use, 87 Reads Way, New Castle, (302) 395-5420, [email protected]. Use the county parcel search first, because incorporated towns are outside county jurisdiction.

Kent County. Levy Court issues building permits and publishes project-specific requirement sheets for single-family dwellings, decks, accessory structures and the like. It publishes no county contractor license, and the only credential it references is the state electrical license. Planning Services, (302) 744-2451.

Sussex County. 'All construction in Sussex County, whether new, remodeling or additions, requires a Sussex County issued building permit', and the county permit is required whether the property lies in a municipality or in the unincorporated county. Plans are reviewed for commercial buildings and are not required for detached single-family homes; projects disturbing 5,000 square feet or more need a Sediment and Erosion Control Plan. The county publishes no contractor license. Building Permit Office, Georgetown, (302) 855-7720.

Wilmington and other municipalities. A business operating inside Wilmington needs a city business license in addition to the state one, and the city's permit rules refer to work being done by a City of Wilmington license holder, so ask the Department of Licenses and Inspections what your trade needs before you contract there. Wage/Business License Division (302) 576-2415; permits, [email protected] or 302-576-3050. Other incorporated towns set their own business license rules, so check each one.

How it works in South Dakota. There is no state contractor license, no state application and no state examination, so nothing carries automatically from one South Dakota city to the next, let alone from another state. What every contractor does need before starting work anywhere in the state is a contractor's excise tax license from the Department of Revenue: 'an individual must be licensed before starting work in South Dakota' and 'all contractors must be licensed regardless of the amount of the receipts they have or the amount of tax due.' There is no fee for it, the excise tax itself is 2% of a prime contractor's gross receipts, and three of the four cities below want to see a copy of the license card before they will issue a city license. Get that first, then take each city in turn.

Sioux Falls. Building Services 'requires a Residential Building Contractor's License of all contractors doing work on residential 1- & 2-family dwellings and townhomes within the city limits', and the examples it gives run from sheds, decks, shingles and sheetrock to basement finishing and new construction. The license is held through a named Construction Supervisor, who must first pass the Construction Supervisor Examination: a timed open-book test on the City of Sioux Falls Residential Code Handbook, offered monthly, 50 questions, 'You must get 80% or higher to pass the test, therefore a maximum of 10 of the 50 questions may be incorrect.' The examination fee is $75.00 and the handbook is $10.00. 'Upon application the Construction Supervisor must submit a $20,000 Compliance Bond, a minimum of $300,000 general liability insurance and the appropriate license fees within 90 days of examination.' Licenses run three years, one hour of continuing education is required in each cycle, and a license expired more than twelve months means sitting the examination again unless an inactive license was maintained. On out-of-state credentials the city is blunt: 'No, the city of Sioux Falls does not reciprocate any licenses. You will still need to take and pass examination before applying for the license.' The city does not print the license fee itself on the page, so ask licensing on 605-367-8672 what to send with the bond and the certificate. Sioux Falls also issues a separate Residential Roofing & Repair Contractor license and separate electrical, mechanical, plumbing, fireplace, refrigeration, irrigation, right-of-way and sign licenses.

Rapid City. Building Services licenses a Class B contractor 'for construction of detached single-family houses, attached single family houses and two-family dwellings', on a city-administered open-book examination based on the 2018 International Residential Code and the Rapid City amendments, 54 multiple choice questions in three hours, sat at City Hall. The license costs $200 initially and $100 to renew, runs three years and carries six hours of continuing education per period. Every applicant files a certificate of insurance naming the City of Rapid City as certificate holder and nothing else is accepted, with minimum general aggregate liability of $1,000,000, $300,000 fire damage and $1,000,000 each occurrence, plus a workers' compensation certificate or a signed statement of non-participation for an owner or partnership with no employees. A copy of the state excise tax certificate goes in the packet. Roofing is a separate Class R license, also $200 for three years, on a 12-question examination. A licensee who misses renewal has a one-year grace period, after which the license lapses and the examination must be taken again. Building Services is on (605) 394-4120.

Aberdeen. The city is explicit that location makes no difference to whether you need its license: 'Whether you are based in the City of Aberdeen itself, a different city within South Dakota, or you are based out of a completely different state all together, you must be licensed through the City of Aberdeen.' The examination is 50 questions, open book, two hours, with a passing score of 70%, studied from The Contractors Handbook at $15, and '$35 fee will be charged every time an exam is attempted or passed.' Aberdeen is the one place in the state that gives any weight to a license held elsewhere: 'the examination requirement may be waived if proof of prior licensing from recognized jurisdictions is approved by the City of Aberdeen's Building Official.' No jurisdiction is named on the handout, so bring the license and the licensing authority's own documentation and ask the Building Official first. After passing or being waived, the applicant files a $200 first-time fee covering three years, proof of liability insurance, proof of workers' compensation insurance if applicable, and a copy of the excise tax license, and is then approved by the City Council, which meets Monday evenings; paperwork is due by noon the previous Wednesday and permits may be drawn only after the vote. Renewal is $150 every three years. Building Inspection is at City Hall, 123 South Lincoln Street, 3rd Floor, 605-626-7017.

Brookings. Community Development issues a residential contractor license on paperwork alone. The requirements are the application, a $75 fee, an excise tax number, a copy of workers' compensation insurance and 'a copy of current General Commercial Liability Insurance Certificate stating the sum of not less than $500,000 for each occurrence.' There is no examination and no bond. The license year is the calendar year, January 1 to December 31, and it 'must be renewed in order to continue any current project or prior to starting any new project'; a contractor with a job in progress who lets it expire pays double the fee. The license is neither refundable nor transferable. Building permits are required in the city and on nonagricultural land in the joint jurisdictional area roughly three miles out. Community Development is at 520 3rd Street, Suite 140, (605) 692-6629.

Everywhere else. Smaller South Dakota cities set their own rules and many require only a permit and proof of insurance. Ask the building official in each city you intend to work in, and remember that the excise tax license is required statewide whether or not the city licenses anybody.