Can You Demolish Your Own House in Delaware?

It may be possible for a property owner to demolish their own house in Delaware. Being allowed to is not the same as it being a sensible do-it-yourself project. What applies depends on the county, the town, the property, and the scope of the work, and the demolition itself is only one piece of it. Asbestos, utility disconnections, and debris handling are where an owner-run teardown usually goes wrong.

Requirements change, and permit offices, inspectors, and jurisdictions can interpret and apply them differently, even on the same type of project. Published figures and requirements on this page are dated to when we reviewed them. Confirm what applies to your property with the county, and the town where applicable, before work starts.

Is It Legal to Demolish Your Own House in Delaware?

It can be, depending on where the house is. Each county handles it differently, and a town may add its own requirements.

New Castle County. Demolition permits come from the Department of Land Use. The county's requirements list a building contractor license or, where an owner-occupier is acting as their own contractor, an owner-occupier affidavit. The county's affidavit form describes that exemption as being for property owners who both own and occupy the property. If you own a house you do not live in, such as an inherited or vacant property, confirm your options with the Department of Land Use at (302) 395-5400.

Kent County. Demolition permits come from the Division of Inspections and Enforcement. Confirm with that office what applies to an owner doing the work.

Sussex County. No specific county demolition permit is required. The county recommends notifying the Assessment office after the demolition so the building is removed from the tax assessment, and contacting the Sewer office, where applicable, to confirm the proper disconnect process.

Inside town limits. Towns can set their own demolition rules and fees. Check with the municipality separately, wherever in Delaware the house is.

For how the counties compare, see our guide to Delaware demolition permits by county. 

Can You Demolish a House Without a Permit?

It depends on the jurisdiction. New Castle County issues demolition permits through its Department of Land Use, Sussex County has no specific county demolition permit, and towns set their own rules. Do not assume either way. Call the county and, if the house is inside town limits, the town before any work starts.

Where a permit is required, allow several weeks. New Castle County's published requirements (revised June 16, 2025) say the county determines a structure's age and historic significance within 20 working days of the application. A house at least 50 years old and found historically significant can have its permit delayed for up to 9 months from the application date.

What Has to Be Dealt With Before a House Comes Down?

Whoever does the work, the same questions have to be answered first.

Asbestos. Older houses can contain it, and it has to be addressed before demolition. See the next section.

Utilities. Electric, gas, water, and sewer each have to be disconnected properly, and the process depends on the utility and the jurisdiction. New Castle County's published requirements, for example, call for sewer and water lines to be capped by a county-licensed plumber under a plumbing permit.

Buried tanks and septic. A buried propane or fuel oil tank, or a septic system, has to be handled according to county and state rules.

The mortgage. If the house carries a loan, it is the lender's collateral. Check your loan documents or call your lender before anything comes down.

What About Asbestos?

Have the house professionally inspected before demolition, and have any asbestos that is found removed by a qualified abatement contractor first. The Delaware Department of Natural Resources and Environmental Control (DNREC) publishes guidance, reviewed October 2026, calling for a thorough inspection by a Delaware-licensed asbestos inspector before a building is demolished.

Asbestos is a serious health hazard, and removing it is not a do-it-yourself task. Disturbing it during a teardown can spread fibers through the debris, the soil, and the air around the property.

In our experience, a professional asbestos inspection typically costs $900 to $1,500 as of October 2026. The cost of abatement varies considerably with what the inspection finds. If you have questions about how DNREC's rules apply to your situation, the Asbestos Management Program is at (302) 323-4542.

Do You Have to Call 811 Before Tearing Down Your Own House?

Yes. Delaware's utility damage prevention law covers demolition as well as digging, and it requires notice to 811 at least 3 business days, and no more than 12, before work starts (26 Del. C. § 806, reviewed October 2026). The call is free.

If a line is damaged, responsibility depends on the circumstances, including who owns the line, whether it was marked, and what happened.

What Happens to the Debris?

Every piece of the house has to go somewhere legal, and how the structure is taken down decides how much is left behind in the ground.

It cannot be burned. Delaware's open burning rules prohibit burning waste at all times, and most open burning is banned from May 1 through September 30 (DNREC, reviewed October 2026).

It has to be hauled. Demolition debris in Delaware usually goes to a Delaware Solid Waste Authority (DSWA) landfill. For fiscal year 2027 (July 1, 2026 to June 30, 2027), DSWA's published rate for construction and demolition debris is $80 per ton, with a $7.50 minimum per vehicle, and the total depends on the weight and type of material.

It has to be contained. Glass, paint chips, and small debris that get ground into the soil stay with the property. We use deliberate methods to keep debris contained and remove it thoroughly, which reduces that risk.

Why Owner-Performed Demolition Rarely Makes Sense

By the time the inspection, the abatement, the utility disconnections, the 811 notice, the equipment, and the hauling are lined up, the demolition itself is often the shortest part of the job. It is also the part where an inexperienced operator can do the most damage to a neighboring property, a buried line, or themselves.

An experienced contractor's value is knowing which questions to ask, whom to contact, and how to set the path forward for a specific property. Our DIY vs. professional guide covers the same question for excavation and land clearing.

Wilhelm Site Services is a family-owned site-work contractor based in Milton, Delaware. When we take on a house demolition, we work out which county and town requirements apply, and we regularly coordinate with asbestos inspection and abatement providers. We can obtain permits on your behalf for an additional fee, or work alongside a homeowner who prefers to handle the applications.

Planning a teardown? Call or text Peter at (302) 500-2928 and describe the project. Get a project quote or learn more about our demolition services.

Can I demolish my own house in Delaware?

It may be possible, depending on the county, the town, and the property. Being allowed to does not make it a sensible do-it-yourself project. Asbestos, utility disconnections, and debris handling all have to be dealt with properly first.

Do I need a permit to tear down my own house?

It depends on where the house is. New Castle County issues demolition permits, Sussex County does not require a specific county demolition permit, and towns can set their own rules. Check with the county and, inside town limits, the town.

Does my house need an asbestos inspection before demolition?

Have it professionally inspected. DNREC's published guidance calls for an inspection by a Delaware-licensed asbestos inspector before a building is demolished, and any asbestos found should be removed by a qualified abatement contractor before the structure comes down.

How many days before demolition do I have to call 811 in Delaware?

At least 3 business days, and no more than 12, before work starts. Delaware's law covers demolition as well as digging, and the call is free.

Can I burn the debris from tearing down my house?

No. Delaware's open burning rules prohibit burning waste at all times, and most open burning is banned from May 1 through September 30. Demolition debris has to be hauled to an approved disposal facility.

Can Wilhelm Site Services handle the permits?

Yes. We can obtain permits on your behalf for an additional fee, and some homeowners choose to handle the applications themselves. Either way, we determine which requirements apply to your property as part of the project.