Last updated 2026-08-21
TL;DR
Delaware runs no ICF contractor board. ICF contracting uses the Division of Revenue contractor license under Title 30, Chapter 25, plus building permits from New Castle, Kent, or Sussex County or an incorporated town. Electricians and plumbers sit under separate Title 24 boards. Confirm current license tax, insurance, and processing rules with Revenue and the local building official before you bid.
Do you need a license for ICF contractor work in Delaware?
Yes. Contract ICF work in Delaware and you need a contractor license from the Division of Revenue. There is no ICF-only ticket. The rule sits in Title 30, Chapter 25. Local building permits still apply on the lot you plan to disturb.[1]
Delaware treats ICF like other structural concrete and general construction. You set forms and place steel, then you pour. That is contracting. Chapter 25 covers people who furnish labor, or labor and materials, for construction on real property. Foam does not open a side door.[1]
If you are a W-2 employee of a licensed contractor, you usually do not hold the firm license yourself. The company does. Your personal manufacturer card does not replace it.
A solo owner-operator who bids ICF houses needs the license before taking money. Start with Revenue. Skip the search for a specialty board.
Work that includes electrical or HVAC still needs the right Title 24 licensee on those tasks. A business license does not turn a laborer into an electrician.[7]
Owner-builder permits are a local invention. They do not hand you a clean path to run a public ICF business. If other people's houses are how you get paid, file the license.
Confirm the current application with the Division of Revenue. I will not invent a fee or a processing promise.[2]
Out-of-state firms chasing one Delaware custom home still need to read Chapter 25 and check any county registration. A Maryland or Pennsylvania ticket does not replace it. Reciprocity stories on the radio are usually about trade boards.
If you only sell block and never place it, you may fall in a retailer class. The moment your crew stacks and pours, you are a contractor. Ask Revenue in writing when the fact pattern is messy.
Is there an ICF contractor board in Delaware?
No. Delaware has no ICF contractor board. It has no statewide examining board for general contractors either. Contractor authority sits with the Department of Finance, Division of Revenue, as a business license and tax matter.[1][2]
People say "board" because other states test experience and mail a plastic card. Delaware does not run that system for concrete or general contractors.
The Division of Professional Regulation does run real boards. Electricians sit under the Board of Electrical Examiners in Title 24, Chapter 14.[7] Plumbers and HVAC techs have a board. Architects and professional engineers have theirs. ICF stacking is not on the list.
If a forum post tells you to call the Delaware contractor board, you will waste a morning. Call Revenue for the license tax. Call the county building official for the permit path. Call DOL if you have payroll questions that belong in workers' comp.[4]
Use this split. Revenue for the right to contract. County or city for the right to build on a named lot. Your carrier and Title 19 for workers' comp. OSHA for site rules. The manufacturer for how that block wants to be stacked.
I would not pay a consultant to introduce you to a board. There is not one.
Want to see what a real board path looks like? Read the ICF contractor board in California guide, then come back. The contrast is the whole lesson.
Who actually licenses ICF contractors in Delaware?
The Division of Revenue licenses contractors. The Department of Finance runs that division. Applications move through the state's business license process. Delaware One Stop is the usual front door if you are forming and licensing together.[2]
Delaware contractor licensing for ICF work is a Division of Revenue business license under Title 30, Chapter 25 (Del. Code tit. 30, ch. 25).[1]
Chapter 25 is short. Read it. It tells you the license exists and that contractor activity is taxed on gross receipts at the rate the General Assembly set. Confirm the live rate and the filing frequency with Revenue before you price work.
Formation is a different counter. The Division of Corporations files your certificate. Fees live on the official fee schedule. Annual franchise tax for corporations and the LLC annual tax live on the tax pages. Confirm current dollars there. Do not use a screenshot from a video.[5][6]
Get an EIN from the IRS when you need one. The online application is free.[14]
Then insurance. Then the county. That order keeps you from requesting a permit in a name that does not exist yet.
Keep PDFs of everything. Revenue, Corporations, the carrier, the county. Inspectors and GCs ask at the worst time.
I do not file these for you. This is reference copy. If a form looks wrong, ask the agency that issued it.
How much does ICF contractor cost in Delaware?
There is no honest single number. State paper is the cheap part. Insurance, ICF inventory, bracing, pump minimums, and the first slow job are what hurt.
On the state side you pay Division of Corporations formation fees (published on the fee schedule) plus annual franchise tax or LLC tax. Delaware's LLC annual tax has been listed at $300 on Division of Corporations materials for years. Confirm the current figure on the official tax page before you budget, because I will not lock a number the General Assembly can change. Corporate franchise tax uses its own method and a published minimum.[5][6]
Revenue's contractor license tax is a statutory gross-receipts style tax under Chapter 25. Rates and exclusions change. Read the chapter, then confirm the live rate with Revenue. Do not budget off a 2019 blog.[1][2]
Insurance is the real line. General liability for residential structural work. Workers' comp if you have employees. Hired and non-owned auto if crews roll in personal trucks. Nobody has good public data on Delaware ICF-only premiums. The honest step is three broker quotes with your real payroll.
Manufacturer training is usually a short course. ICFPath sells a $179 one-time Manufacturer Cert + Takeoff Kit if you want packaged takeoff practice. That is a training product. It is not a Delaware license.
Permits are local. New Castle, Kent, and Sussex do not share a fee board. Ask the official for the address you are about to disturb.[8][9]
Waste of money: a license expediter hunting a board that does not exist. Exam prep written for Florida. Websites selling a "national contractor card."
| Cost bucket | Who sets it | Honest next step |
|---|---|---|
| Contractor license tax | Division of Revenue | Confirm rate and filing calendar [2] |
| Entity filing and annual tax | Division of Corporations | Use the live fee and tax pages [5][6] |
| EIN | IRS | File free online [14] |
| Building permit | County or city AHJ | Price the actual address [8][9] |
| Workers' compensation | Private carrier under Title 19 | Coverage in force before payroll [3] |
| ICF training | Manufacturer or trainer | Separate from state paper |
First-year cash also swallows a rained-out pour and extra labor on your first ugly openings. Price that in.
How long does ICF contractor take in Delaware?
Two clocks. Standing up the company, and building the walls.
Company paper can move fast if the filings are clean. Delaware entity filings often clear quickly. Revenue license timing is not something I will promise. Confirm current processing with the Division of Revenue. Do not bid a start date on a guess.[2][5]
Manufacturer ICF training runs in days, not weeks.
The building clock depends on the house and the inspector. ICF walls go up in a stack. Then you call for a pre-pour look at steel and alignment. Then you pour. Counties will not treat ICF as witchcraft if you hand them the evaluation report and a bracing plan. First-time ICF in a jurisdiction can still add review time. Nobody publishes a clean statewide median for that delay.
A small custom ICF house can stack in days once the footings are right. The rest of the schedule looks like any other house. The long pole is often the pump date and inspector availability, not the foam.
Disturbing an acre or more? You need a sediment and stormwater plan. Add design and approval time before you strip the site. EPA requires NPDES stormwater permits for construction activities that disturb 1 or more acres. Smaller sites in a larger common plan can trigger it too. Delaware runs the on-the-ground program through DNREC and delegated agencies.[10][11]
A single-lot custom home under an acre may stay off the federal trigger and still need local erosion controls. Ask before you strip.
What paper do you file before the first ICF pour?
Entity papers. EIN if you need one. Revenue contractor license. Building permit for that address. Workers' comp if you have employees. That is the business pile.[1][3][14]
Then the ICF pile. Product evaluation. Wall layout. Opening and lintel details. Bracing. Rebar schedule. If the official wants a PE, you get a PE. Do not argue code from a group chat.
The U.S. Department of Energy puts the product in one line: "Insulating concrete forms (ICFs) are forms or molds that have built-in insulation for accepting reinforced concrete." The inspection is still a concrete wall inspection. Steel, cover, cleanouts, alignment.[12]
Sediment controls go in before the site dumps mud into a tax ditch. DNREC's sediment and stormwater program is the state reference.[11]
I keep a printed license and certificate of insurance in the truck. Some inspectors ask. The day they ask is a bad day to have files only on a dead phone.
Do not schedule the pump until the pre-pour is signed. Concrete does not wait in the hopper while you find the missing stirrup.
Do Delaware counties and towns add their own contractor rules?
Yes. Delaware is local on building permits. New Castle County Department of Land Use covers a huge share of the state's population. Sussex County Planning and Zoning covers much of the coastal custom work where ICF shows up on larger houses. Kent County handles the middle of the state.[8][9]
Incorporated towns can run their own departments. Wilmington is not the same counter as an unincorporated Sussex lot. Check the parcel, not the county line you remember.
Local extras show up as contractor registration, insurance minimums, copies of the Revenue license, and how drawings get submitted. I have not seen a uniform three-county ICF checklist. Ask for their residential concrete notes in writing.
Work near a state line? Do not assume the other card helps. Compare paper in the ICF contractor board in Connecticut guide or the ICF contractor cost in Virginia notes if you are building a multi-state plan. Those pages are contrast, not Delaware instructions.
Some towns want a local business license on top of the state contractor license. Pay it if they can point to the ordinance. Argue later, after you can pull the permit.
What about electricians, plumbers, and engineers on an ICF job?
Title 24, Chapter 14 of the Delaware Code creates the Board of Electrical Examiners (Del. Code tit. 24, ch. 14). That board is real. They test applicants and they handle complaints. ICF contractors get no equivalent chapter.[7]
Hire licensed trades. ICF walls need sleeves and boxes thought through before the pour. Cutting a finished wall for a dryer vent is a stupid tax.
Structural design becomes an engineer problem when the official says so, or when the wall is not a simple prescriptive stack. Manufacturers publish details. Some officials accept them. Some want a Delaware PE. Budget the stamp the first time you work a new office.
OSHA construction standards in 29 CFR 1926 still apply. Bracing failures and rebar impalement are how ICF sites hurt people.[13]
Do not let a helpful laborer land the service because the electrician is late. That is how you buy two problems.
Do you need manufacturer certification to stack ICF in Delaware?
No. Delaware does not require manufacturer certification to stack ICF. Get it anyway. Warranty letters, takeoff help, and a phone number when a window buck looks wrong beat the course fee.
Each brand has its own web ties, ledge forms, and brick ledge parts. Mixing leftover block from three brands on one elevation is how you spend Saturday grinding foam.
This is training, not licensure. Keep the card next to the Revenue license so you do not hand the county the wrong PDF.
Comparing startup paper? The ICF contractor board in Utah and ICF contractor board in Florida pages show examining-board states. Delaware is lighter on the exam and heavier on you knowing your local inspector.
Take the class on the brand you will actually buy. A certificate for a block you cannot get delivered to Sussex in February is wall art.
What insurance and workers comp does Delaware expect?
If you have employees, treat workers' compensation as required until counsel or the Department of Labor tells you a written exception applies. Title 19, Chapter 23 is the statute. DOL's Division of Industrial Affairs is the agency face.[3][4]
General liability should match what the GC and the county will accept. Get additional insured wording on paper before you need it on a Monday.
OSHA still owns the site even when the state license was a tax form. 29 CFR 1926 is the construction book. Fall protection on tall ICF walls is not optional because the foam feels soft.[13]
I would not start a pour on a handshake sub who says he has his own insurance. Collect certificates. Call the agent once.
Unemployment insurance registration belongs in the same new-employer pile if you have staff. Confirm current employer steps with DOL. Do not skip it because the crew is family for now.
How do you start an ICF contracting company in Delaware?
Pick an entity. File with the Division of Corporations. Pay the published fee.[5]
Get the EIN. It is free online from the IRS.[14]
Open the bank account in the real legal name.
File the Division of Revenue contractor license. Use One Stop if that is the front door the state is pushing the week you read this.[2]
Put insurance in force before anyone lifts a form.
Pick an ICF brand and take the installer class. Run a takeoff on a simple rectangular ranch before you bid a six-corner coastal house.
Call the building official for your first real address. Ask how they want ICF drawings. Ask who inspects the pre-pour. Write the names down.
Hire licensed electrical and HVAC people who have seen ICF, or who will walk the walls with you before the concrete date.
I write reference pieces. I do not file your forms and I do not represent you. If a form looks wrong, ask the agency.
Want a structured takeoff practice set after the license is in motion? ICFPath publishes the kit at /start. You do not need it to finish the Delaware paper path.
What mistakes stall Delaware ICF jobs?
Calling DPR for a general contractor exam. There is not one.
Pricing off another state's table. How much ICF contractor cost in Arkansas really runs is not your number.
Stripping a site before you know the sediment rules.[11]
Pouring without a pre-pour. You cannot unwind that concrete.
Letting an unlicensed helper run electrical in the cores because everyone is already there.
Forgetting that an incorporated town may want its own license copy.
Bidding ICF like wood framing and then meeting pump minimums and bracing labor in week two.
Skipping workers' comp because the first job is just two guys. Read Title 19 before you take that bet.[3]
How does Delaware compare to states with a real contractor board?
Delaware is a Revenue-license state, not a board-exam state, for ICF and general contracting. Faster paper. Less hand-holding. More weight on the county inspector and on your insurance.
Want the other model? Read the ICF contractor board in California and ICF contractor board in Florida guides. Heavier exams. A different first-year calendar.
For cost structure contrast, use ICF contractor cost in Virginia and ICF contractor cost in Vermont. Read them as contrast. Do not file those forms in Dover.
Confirm every variable number with Revenue, Corporations, and the AHJ on the lot. No approval timeline in this article is a guarantee, because I did not give you one.
Frequently asked questions
Do you need a license for ICF contractor in Delaware?
Yes, if you contract ICF work for others. Delaware does not issue an ICF-only license. The state piece is a contractor business license from the Division of Revenue under Title 30, Chapter 25. You still need a building permit from the county or town. Manufacturer installer cards are not a substitute. Confirm the current application with Revenue before you bid.
How much does ICF contractor cost in Delaware?
State formation fees and the Chapter 25 contractor license tax are the official paper costs. Confirm both on the Division of Corporations fee schedule and with Revenue. Insurance, ICF block, steel, concrete pumping, and first-year labor dwarf those filings. There is no honest single statewide total. Anyone selling you one number is guessing.
How long does ICF contractor take in Delaware?
Company filings can move quickly if they are complete. Do not treat that as a promise. Confirm Revenue and county review times when you file. Manufacturer training runs in days. The first house follows inspections, pump dates, and weather. Stormwater plan approval adds time if you disturb an acre or more.
Does Delaware give an exam for ICF contractors?
No statewide ICF or general contractor exam exists. The Division of Revenue license is a business license and tax matter. Electricians do sit exams under Title 24. Do not buy Florida or California exam prep for a Delaware ICF startup. Spend that money on bracing and a clean takeoff instead.
Will a Maryland or Pennsylvania contractor license cover Delaware ICF work?
No. Out-of-state cards do not replace the Delaware Division of Revenue contractor license. County permit offices will still want Delaware paper and local registration if they use it. Reciprocity chatter on jobsites is usually about trade boards, not this license.
Do I need a PE stamp for a residential ICF house in Delaware?
Sometimes. It is an AHJ call and a complexity call. Simple rectangular walls with manufacturer details may pass some residential reviewers. Coastal, tall, or heavily opened walls often need a Delaware licensed PE. Budget the stamp the first time you work a new office.
Is ICF allowed under Delaware residential codes?
Yes, as a formed concrete wall system when it meets the adopted building code and the official's detailing rules. Counties adopt and enforce the building code. Bring the product evaluation report. ICF is not a variance product if you detail it like concrete, because it is concrete.
What bond does Delaware require for ICF contractors?
Chapter 25 is a license and tax chapter, not a copy of states that publish one statewide contractor bond amount. Some owners, GCs, or towns may ask for a bond anyway. Confirm with Revenue and the building official for the job. I will not invent a statewide dollar figure.
Can a homeowner pull the permit and hire an unlicensed ICF crew?
Owner-builder permit rules are local. Using that path to run an unlicensed contracting business is a bad plan. If you take money to build for other people, get the Revenue license. Confirm owner-builder limits with the AHJ on that lot.
Does OSHA apply to a two-person ICF crew in Delaware?
Federal construction standards in 29 CFR 1926 apply to construction work. Crew size does not make rebar caps or bracing optional. Delaware's Revenue license does not replace OSHA duties. Read the construction standards and run the site like someone could get hurt, because they can.
Where do I get the current contractor license tax rate?
From the Division of Revenue and from Title 30, Chapter 25 as currently published. Rates and exclusions change. Use the official business license tax pages and the statute. Ignore old blog tables. If the two sources seem to disagree, ask Revenue which figure to file.
Do subcontractors who only stack ICF for a licensed GC still need a Delaware license?
If you furnish labor for construction, Chapter 25 may still treat you as a contractor. Confirm with Revenue in writing for your fact pattern. Many stacking subs still hold the license. Do not take legal advice from the GC's handshake.
What is the difference between DPR and Division of Revenue?
DPR runs professional boards for electricians, plumbers, engineers, and architects. Division of Revenue runs business licenses and the contractor license tax. ICF general contracting goes to Revenue. Calling DPR first is the most common wasted morning in this process.
Are ICF walls inspected differently from wood walls in Delaware?
Yes in the details. You get a pre-pour look at steel, openings, and alignment, then a pour, then later inspections like any house. It is a concrete inspection, not a stud inspection. Bring the evaluation report and do not cover the steel until the official has signed the card.
Sources
- Delaware Code Title 30, Chapter 25 (Contractors' License Requirements and Taxes): Delaware requires persons in the contracting business to obtain a license administered as a contractor license and tax matter under Title 30, Chapter 25
- Delaware Code Title 19, Chapter 23 (Workers' Compensation): Delaware workers' compensation law in Title 19, Chapter 23 governs employer compensation insurance duties
- Delaware Department of Labor, Workers' Compensation: The Department of Labor Division of Industrial Affairs administers Delaware workers' compensation
- Delaware Division of Corporations, Fee Schedule: Delaware entity formation and related filing fees are published on the Division of Corporations fee schedule
- Delaware Division of Corporations, Franchise Tax: Delaware corporations pay annual franchise tax under amounts and methods published by the Division of Corporations
- Delaware Code Title 24, Chapter 14 (Board of Electrical Examiners): Electricians are licensed under the Board of Electrical Examiners in Title 24, Chapter 14, a separate path from ICF general contracting
- New Castle County Department of Land Use: New Castle County Department of Land Use administers land use, building permits, and code enforcement in the county
- Sussex County Planning and Zoning: Sussex County Planning and Zoning handles planning, zoning, and related development review in Sussex County
- U.S. EPA, Stormwater Discharges from Construction Activities: EPA's NPDES stormwater program requires permits for construction activities that disturb one or more acres, and for smaller sites in a larger common plan of development or sale
- Delaware DNREC Sediment and Stormwater Program: Delaware implements sediment and stormwater requirements for construction through DNREC's Sediment and Stormwater Program
- OSHA Construction Industry regulations, 29 CFR 1926: Federal OSHA construction safety standards in 29 CFR 1926 apply to construction jobsites including ICF work
- IRS, Apply for an Employer Identification Number (EIN) Online: Businesses obtain an EIN from the IRS, and the online EIN application is provided by the IRS at no charge