Driftwood on a sandy shore with a bridge in the distance at Dewey Beach, Delaware.

Tiny Homes in Delaware: Laws, Rules and Communities

Updated November 4, 2026. Some laws may have changed since then. Confirm with your county or town before you buy land or a home.

The short answer

Yes, you can live in a tiny home full time in Delaware, on a permanent foundation and where your county or town zoning allows a house. State law lets each county adopt its own building code, and we found no statewide building code for houses, so the building code comes from your county or town, while the state sets the energy code for new homes. On wheels, we found no Delaware law that defines a tiny home on wheels, and Sussex County says a camper or RV cannot be used as living space. The Housing for Every Delawarean Act, signed July 13, 2026, requires counties and larger towns to plan, with their next comprehensive plans, for ADUs, cottage housing and manufactured housing without a special permit. Delaware has the 20th highest cost of living of the 50 states, an income tax of 2.20 to 6.60 percent, an effective property tax rate of 0.54 percent (12th lowest), and homeowners insurance averaging $1,365 a year.

On this page. Quick facts, the rules in plain words, where to start, living in Delaware, communities and common questions.

In Delaware, zoning and building codes are local. A tiny home on a permanent foundation, anchored to a base built into the ground, is a house. A tiny home on wheels, built on a trailer so it can be towed, has no category of its own in the Delaware laws we read, and where you can live in one depends on your county or town.

This guide covers who sets the building code, the energy code, Sussex County's tiny home rules, homes on wheels, manufactured and modular homes, ADUs, the 2026 housing law, septic, and what we found when we looked for communities.

Quick facts

On a foundation (anchored to a base in the ground): a house, built to the code your county or town adopts. We found no statewide building code for houses in Delaware.
Energy code: the energy code adopted by the Delaware Energy Office is the minimum for new homes, and DNREC adopted the 2024 International Energy Conservation Code for new residential construction, effective April 11, 2026.
Tiny house appendix: Sussex County's tiny home handout applies parts of it to ceiling heights, lofts and emergency escape openings. Sussex's code text does not name the appendix, so ask your building office.
On wheels (built on a trailer): no Delaware law defines a tiny home on wheels. Sussex County says a camper or RV cannot be used as living space.
ADUs (a second, smaller home on the same lot as a house): allowed in New Castle County and unincorporated Sussex County under their own rules. A 2026 state law requires counties and towns over 2,000 people to plan for ADUs without a special permit in their next comprehensive plans.
Septic (an underground system that treats wastewater where there is no sewer): you need a permit before you build or repair a system, and a licensed soil scientist does the site evaluation.

Can you live in a tiny home full time in Delaware?

Yes, on a permanent foundation where local zoning allows a house. On wheels, it depends on your county or town.

On a foundation, a tiny home is a house. It has to meet the building code your county or town enforces and the state's energy code for new homes, and it needs sewer or a permitted septic system.
In Sussex County, a tiny home of 400 square feet or less is reviewed under the county's tiny home handout, which requires a permanent foundation.
On wheels, we found no Delaware law that allows or bans living full time in one. Sussex County's guide to its code says the use of a camper or RV as living space is prohibited.
We found no statewide minimum house size. Sussex's handout sets a minimum of 70 square feet of habitable space and minimum loft sizes, so ask your county or town what applies.

The rules in plain words

Building code

Delaware law leaves building codes to local governments, and we found no statewide building code for houses. Under 16 Del. C. 7601, the Kent County Levy Court and the New Castle and Sussex county councils "may adopt and enforce" building codes, and the state energy code law (16 Del. C. 7602) refers to both county and municipal building codes, so towns can have their own. Ask your county or town building office which code and edition it enforces before you design.

Sussex County, for example, enforces the 2021 International Residential Code, chapters 1 through 10, for one and two family homes. It adopted that code by Ordinance 2851, adopted August 9, 2022 and in effect since January 1, 2023, and it does not require fire sprinklers in one and two family homes or townhouses. New Castle County's building code chapter, in the copy the county posts online (last amended in 2015 in that copy), says provisions in the appendices of the codes it adopts do not apply unless the county specifically adopts them.

The energy code

The energy code is set at the state level. Under 16 Del. C. 7602, the energy code adopted by the Delaware Energy Office is the minimum for new one and two story homes and other new residential buildings of three stories or less, and county and town codes have to meet a new edition within 12 months of its adoption. DNREC adopted the 2024 International Energy Conservation Code for new residential construction by Secretary's Order 2026-CCE-0002, effective April 11, 2026.

The same law says that as of December 31, 2025, all new residential construction in Delaware "shall be zero net energy capable." The law defines that as a home efficient enough that, if the owner adds on-site generation such as solar, it could reach zero net energy use. Ask your building office how it checks this for a small home.

The tiny house appendix

The national residential code has an appendix with rules for tiny houses, often called Appendix Q.

How it applies in Sussex County is not settled on paper.

Sussex's building code ordinance adopts chapters 1 through 10 of the 2021 code and does not name any appendix.
Sussex's own "Tiny Home Requirements" handout, which is undated, covers homes of 400 square feet or less, not counting lofts, and points to Appendix Q sections for ceiling heights, for loft access, handrails and guards, and for emergency escape openings.
The handout cites the 2018 energy code for insulation, which is older than the 2024 edition the state adopted in 2026.

What it means for you is that in Sussex, the handout is the clearest written guide to how the county reviews a small home, but its code text and handout do not line up on their face. Ask the Sussex building code office, in writing, which rules it will apply to your plans. In New Castle County, the appendix applies only if the county has specifically adopted it, so ask there too. For Kent County and the towns, ask your building office.

The Sussex handout's main points:

The home must be anchored to a permanent foundation, such as a turned-down slab or a crawlspace with footings 24 inches below grade.
Habitable space must be at least 70 square feet. A loft must be at least 35 square feet and at least 5 feet in every horizontal direction.
Ceilings must be at least 6 feet 8 inches in habitable spaces and hallways, and 6 feet 4 inches in bathrooms, toilet rooms and kitchens. A loft ceiling can be lower, but at least 3 feet.
The home needs a permanent water source, sewage disposal, a kitchen and full bathroom, and a permanent heat source able to keep it at 68 degrees F in winter.

Tiny homes on wheels

We found no Delaware law that defines a tiny home on wheels. The state's manufactured home community law defines a recreational vehicle as a travel trailer, camping trailer, park trailer, camper or similar unit "primarily designed as temporary living quarters for recreational camping or for seasonal or travel use," and it does not cover renting a lot for an RV, with one exception. An RV that is a tenant's primary residence in a manufactured home community with at least two manufactured homes, and that can no longer reasonably be made mobile, counts as a manufactured home under that law (25 Del. C. 7003 and 7004).

How a tiny home on wheels is treated is not settled at the state level. Sussex County's guide to its code says plainly that "the use of a camper/RV or shed as living space is explicitly prohibited," and its zoning code lets a camp trailer be stored on a lot in its agricultural residential and medium-density residential districts only if "it is not used for living purposes while so parked or stored." We have not found a written rule for New Castle County, and we have not yet checked Kent County or the towns. Some coastal campgrounds in Sussex are seasonal. One park's 2022 county approval, for example, requires the park to stay vacant while it is closed, except for park model RVs on approved park model sites. What it means for you is that a home on wheels you plan to live in may have nowhere legal to go full time in Sussex, and you should ask your county or town before you buy one.

That is a local zoning question everywhere in the state, so call before you buy a home on wheels to live in.

Modular and manufactured homes

Delaware law defines a manufactured home as a factory-built single-family home that is 8 body feet or more wide and 40 body feet or more long, or more than 400 square feet of living area when set up on site, with or without a permanent foundation, designed as a year-round dwelling, and built to the federal HUD code if made since June 15, 1976 (25 Del. C. 7003). Every manufactured home installed in Delaware must be installed by an installer licensed by the state (24 Del. C. 4421).

We found no Delaware law that stops a county from limiting manufactured homes on individual lots. Sussex County, for example, allows a manufactured home as a single-family home on an individual lot in its agricultural residential districts (AR-1 and AR-2) only if it meets rules that include these.

The lot is not in a major subdivision created before the rule.
The home is at least 24 feet wide along any front, side or rear wall, not counting a garage.
It is permanently mounted on a solid or pier foundation and anchored, with wheels, axles and towing gear removed.
A multi-section home placed for the first time is no more than ten years old.

Sussex's general residential (GR) district allows manufactured homes that do not meet those rules, under the county's general manufactured home standards. Sussex also requires a placement permit for a manufactured home. The 2026 housing law (below) will require each county and larger town's affordable housing plan to allow manufactured housing without a conditional use permit or special exception.

ADUs in Delaware

Delaware has no statewide ADU law in force. New Castle County and unincorporated Sussex County allow them under their own rules.

New Castle County. Ordinance 24-087, signed October 4, 2024, lowered the lot size for a detached ADU from 2 acres to half an acre, removed the countywide cap on the number of ADUs, and permits small single-family homes, such as tiny homes, as ADUs. The county code, as amended through March 10, 2026, allows one ADU per single-family lot, requires one extra off-street parking space, and still requires the property owner to live in either the main house or the ADU.
Sussex County. An ordinance approved June 25, 2024 (Ordinance 3027) raised the maximum size to 1,000 square feet, allows a self-contained kitchen, and allows attached or detached units. The county code also caps an ADU at half the floor area of the house and requires at least one parking space and a lot of at least 10,000 square feet. In the agricultural residential, medium-density residential and urban residential districts, county staff can approve one ADU without a special use exception. In the general residential and high-density residential districts, an ADU is still listed as a special use exception. The lot needs adequate sewer capacity, setbacks are reviewed by county staff, and deed restrictions or homeowners association rules take precedence. It applies only outside incorporated towns.

Towns set their own rules. For ideas on building one, see advice for a tiny backyard ADU.

The 2026 housing law

The Housing for Every Delawarean Act, Senate Substitute 2 for Senate Bill 23, was signed July 13, 2026 and took effect that day (85 Del. Laws c. 343).

Each county and each town of more than 2,000 people that must adopt a comprehensive plan has to include an affordable housing plan, developed with the Delaware State Housing Authority, with a goal of 20 percent of homes being affordable.
That plan must allow a mix of housing types, including single-family homes, duplexes, triplexes, apartments, ADUs, cottage housing developments and manufactured housing, without a conditional use permit or special exception.
It must also review standards such as minimum lot sizes and minimum unit size as they relate to reaching the maximum allowed density.
A residential application for a use allowed by right is reviewed through an administrative process, limited to objective standards.

The plans arrive with each jurisdiction's next comprehensive plan, and a jurisdiction adopting its next plan before February 1, 2027 can wait until its next five year review. What it means for you is that the law does not by itself change what zoning allows on your lot today, though an application for a home that zoning already allows by right now goes through administrative review. Ask your county or town when its affordable housing plan is due and what it will allow.

Septic

Where there is no sewer, a septic system needs a permit from DNREC before it is built. DNREC describes three steps. A licensed Class D soil scientist does a site evaluation, a licensed designer designs the system and gets the permit, and a licensed contractor installs it. The rules are in 7 DE Admin. Code 7101. In Sussex, an ADU also needs adequate sewer capacity on the lot. If you are buying raw land, get the site evaluation before you close.

Where to start

Not sure which office covers your land? USA.gov's local government finder points to a directory of Delaware's counties and cities, with their websites and contacts.
Call the zoning office for your county (New Castle County Department of Land Use, Kent County Levy Court, Sussex County Planning and Zoning) or your town if the land is inside town limits. Ask whether a small home, an ADU or a home on wheels is allowed there, and get the answer in writing.
Ask the building office which code and edition it enforces, whether it applies the tiny house appendix, and how it checks the state energy code and the zero net energy capable rule.
In Sussex County, ask for the current tiny home handout and confirm in writing that it still applies to your plans.
If the land is not on sewer, hire a licensed soil scientist for a site evaluation and talk with DNREC about a septic permit before you buy.
For a manufactured or modular home, ask what width, foundation and age rules apply on that lot.
Before buying land, check deed restrictions and homeowners association rules, since both can still limit ADUs in Sussex.

Living in Delaware

How Delaware compares with the other 49 states on the things people weigh before a move. Figures as of November 2026.

Happiness score (WalletHub 2026). 50.81 out of 100, 28th happiest
Cost of living (MERIC, Q2 2026; U.S. average is 100). 100.6, 20th highest
State income tax. Graduated, 2.20 to 6.60 percent
State sales tax. None
Property tax, effective rate on owner-occupied homes (Tax Foundation, 2024 data). 0.54 percent, 12th lowest
Homeowners insurance, average a year with $400,000 in dwelling coverage (NerdWallet 2026; U.S. average $2,490). $1,365
Health care (U.S. News). 13th
Education (U.S. News). 37th
Average temperature, 1991 to 2020. 56.2 degrees F
Average precipitation, 1991 to 2020. 45.9 inches a year
Sunshine in Wilmington. 97 clear days a year

Delaware's cost of living is right at the national average, 20th highest among the states, and it has no state sales tax. Its state income tax runs from 2.20 to 6.60 percent, and its effective property tax rate is 0.54 percent. Homeowners insurance averages $1,365 a year with $400,000 in dwelling coverage, compared with a U.S. average of $2,490. U.S. News ranks Delaware 13th in health care and 37th in education, and WalletHub ranks it 28th happiest.

Rankings mix many factors, and statewide averages hide differences between regions. Land prices, local rules and whether you can get on sewer differ from one part of the state to another, so look at the area where you plan to live.

Tiny home communities in Delaware

We could not confirm a Delaware tiny home community that people can buy or lease into, or an RV park that takes tiny homes or park models for monthly or longer stays, on its own website as of November 2026. The listings we checked were directories, vacation rentals, seasonal campgrounds or a shelter project. We would rather list none than send you to one that does not exist.

If you find one, check its own website, ask whether you buy or lease the lot, whether year-round living is allowed and which home types it takes, and contact it directly before you plan around it. We will add communities here as we confirm them.

Tours we have filmed in Delaware

We do not have a Delaware tour to list here yet. When we do, it will be listed here. Our tours from other states are at Tiny Home Tours by State.

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Frequently asked questions

Is it legal to live in a tiny house in Delaware?

Yes, on a permanent foundation where local zoning allows a house, if it meets the building code your county or town enforces and the state energy code for new homes, with sewer or a permitted septic system. For a tiny home on wheels, local zoning decides, and Sussex County says a camper or RV cannot be used as living space.

Can I park a tiny home on wheels on my own land in Delaware?

It depends on your county or town. We found no Delaware law that defines a tiny home on wheels. Sussex County's guide to its code says the use of a camper or RV as living space is prohibited, so ask your county or town in writing before you buy.

Does Delaware use Appendix Q for tiny houses?

There is no statewide answer, because we found no statewide building code for houses in Delaware. Sussex County's tiny home handout applies Appendix Q sections to ceiling heights, lofts and emergency escape openings, although its code ordinance does not name the appendix. In New Castle County, appendix provisions apply only if the county specifically adopts them. Ask your building office in writing.

Can I build an ADU in Delaware?

In New Castle County and unincorporated Sussex County, yes. New Castle County allows small single-family homes, such as tiny homes, as ADUs, with a detached ADU on a lot of at least half an acre, and the owner must live in the house or the ADU. Sussex County allows ADUs up to 1,000 square feet, and no more than half the floor area of the house, outside incorporated towns. The 2026 Housing for Every Delawarean Act requires counties and towns over 2,000 people to allow ADUs without a special permit in their affordable housing plans, which arrive with each jurisdiction's next comprehensive plan.

Do I need a septic permit for a tiny home in Delaware?

Yes, if the land is not on sewer. You need a permit from DNREC before a system is built, after a site evaluation by a licensed soil scientist and a design by a licensed designer.

Sources

This page explains the rules in general terms and is not legal advice. Local rules vary. Confirm with your county or town before you buy land or a home.

Hero photo: Dewey Beach, by Zachary Brown on Unsplash.