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ADU.

Every PERCH guide on accessory dwelling units — by-right pathways state by state, cost breakdowns, ROI math for backyard rentals, and the ADU codes that quietly rewrote what a residential lot can hold.

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GUIDE
ADU Cost, Financing & Return Analysis
The backyard cottage. The forever loan payment. Discuss.
GUIDE
ADU for Adult Children: Independent Living Guide
For the kids who want their own front door.
GUIDE
ADU for Elderly Parents & In-Laws: The 2026 Guide
Somewhere in America, a woman is doing dishes at her sink and her mother-in-law is doing dishes at hers. They are exactly seventy-five feet apart. Nobody has spoken in an hour. Bot
GUIDE
ADU for Grandparents: Multi-Gen Living Guide
Grandparents next door, not down the street.
GUIDE
ADU for Passive Income: 2026 Guide
House-hacking, for people who don't like the word "hacking."
GUIDE
ADU Rental Income: Financing & Return Guide
Two things happen when a middle-class family builds an ADU with a rent-out plan.
GUIDE
ADU Rental Income to Offset Mortgage Payments
When the mortgage math finally makes sense.
COMPARISON
ADU vs. Garage Conversion: The 2026 Comparison
Same square footage. Half the parking. Very different permits.
COMPARISON
ADU vs Guest House vs Accessory Structure: The 2026 Definitions
The phrases accessory dwelling unit, guest house, casita, in-law unit, granny flat, accessory structure, and detached secondary unit all describe overlapping but legally distinct c
COMPARISON
ADU vs. Manufactured Home: The 2026 Comparison
Two small homes. One goes in the backyard. One goes on its own lot.
COMPARISON
ADU vs. Tiny Home: The 2026 Comparison
Two small houses. Two very different building permits.
GUIDE
Container Homes in Los Angeles: The 2026 Buyer's Guide to LA's ADU-First Market
Los Angeles County has produced more accessory dwelling units than any county in the United States since California's 2017-2024 ADU reform sequence — LA County issued 23,914 ADU pe
GUIDE
Expandable Container Homes for Dallas, TX: The 2026 ADU and Affordable Housing Reference
Expandable container homes have emerged as the highest-yield ADU configuration in Dallas metro in 2026 — combining the compact shipping footprint required for tight infill lots wit
GUIDE
Age in Place: ADU & Tiny Home Solutions Guide
A tiny house in the backyard, and other ways to age in place.
GUIDE
Aging in Place: Home Modifications & ADU Guide
Aging in place, without the sad brochure.
GUIDE
Atlanta ADU Builder: How to Choose One in 2026 (and the Five Mistakes That Cost the Most)
Atlanta's accessory dwelling unit market has matured into one of the most active in the Southeast. The City of Atlanta's 2022 ADU ordinance and the 2024 refinements that followed p
GUIDE
Average Backyard Size in Alabama: The 2026 Reference
Average backyard size in Alabama is meaningfully larger than the US national median, with most single-family residential lots producing rear yards in the 5,000 to 12,000 square foo
GUIDE
Average Backyard Size in Arizona: The 2026 Reference
Average backyard size in Arizona is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot ra
GUIDE
Average Backyard Size in California: The 2026 Reference
Average backyard size in California is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot
GUIDE
Average Backyard Size in Colorado: The 2026 Reference
Average backyard size in Colorado is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot r
GUIDE
Average Backyard Size in Florida: The 2026 Reference
Average backyard size in Florida is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot ra
GUIDE
Average Backyard Size in Georgia: The 2026 Reference
Average backyard size in Georgia is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot ra
GUIDE
Average Backyard Size in Illinois: The 2026 Reference
Average backyard size in Illinois is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot r
GUIDE
Average Backyard Size in Indiana: The 2026 Reference
Average backyard size in Indiana is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot ra
GUIDE
Average Backyard Size in Louisiana: The 2026 Reference
Average backyard size in Louisiana is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot
GUIDE
Average Backyard Size in Maryland: The 2026 Reference
Average backyard size in Maryland is meaningfully smaller than the US national median, with most single-family residential lots producing rear yards in the 1,500 to 4,500 square fo
GUIDE
Average Backyard Size in Massachusetts: The 2026 Reference
Average backyard size in Massachusetts is meaningfully smaller than the US national median, with most single-family residential lots producing rear yards in the 1,500 to 4,500 squa
GUIDE
Average Backyard Size in Michigan: The 2026 Reference
Average backyard size in Michigan is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot r
GUIDE
Average Backyard Size in Minnesota: The 2026 Reference
Average backyard size in Minnesota is meaningfully larger than the US national median, with most single-family residential lots producing rear yards in the 5,000 to 12,000 square f
GUIDE
Average Backyard Size in Missouri: The 2026 Reference
Average backyard size in Missouri is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot r
GUIDE
Average Backyard Size in New Jersey: The 2026 Reference
Average backyard size in New Jersey is meaningfully smaller than the US national median, with most single-family residential lots producing rear yards in the 1,500 to 4,500 square
GUIDE
Average Backyard Size in New York: The 2026 Reference
Average backyard size in New York is meaningfully smaller than the US national median, with most single-family residential lots producing rear yards in the 1,500 to 4,500 square fo
GUIDE
Average Backyard Size in North Carolina: The 2026 Reference
Average backyard size in North Carolina is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square
GUIDE
Average Backyard Size in Ohio: The 2026 Reference
Average backyard size in Ohio is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot range
GUIDE
Average Backyard Size in Pennsylvania: The 2026 Reference
Average backyard size in Pennsylvania is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square fo
GUIDE
Average Backyard Size in South Carolina: The 2026 Reference
Average backyard size in South Carolina is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square
GUIDE
Average Backyard Size in Tennessee: The 2026 Reference
Average backyard size in Tennessee is meaningfully larger than the US national median, with most single-family residential lots producing rear yards in the 5,000 to 12,000 square f
GUIDE
Average Backyard Size in Texas: The 2026 Reference
Average backyard size in Texas is meaningfully larger than the US national median, with most single-family residential lots producing rear yards in the 5,000 to 12,000 square foot
GUIDE
Average Backyard Size in Virginia: The 2026 Reference
Average backyard size in Virginia is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot r
GUIDE
Average Backyard Size in Washington: The 2026 Reference
Average backyard size in Washington is broadly comparable to the US national median, with most single-family residential lots producing rear yards in the 3,000 to 7,500 square foot
GUIDE
Average Backyard Size in Wisconsin: The 2026 Reference
Average backyard size in Wisconsin is meaningfully larger than the US national median, with most single-family residential lots producing rear yards in the 5,000 to 12,000 square f
GUIDE
Backyard ADU for Family Space & Privacy
The second door your family has been asking for.
GUIDE
Backyard Cottage vs. Home Addition: Full Comparison
The addition that doesn't require permits, plumbing, or divorce.
GUIDE
Backyard Home for an Aging Parent: ADU Guide
That's not a soft phrase. It's the arrangement. She gets a home, not a room. You get a mother nearby, not a mother upstairs. The compromises everyone thought they had to make — the
GUIDE
Backyard Office ADU: Multi-Purpose Guide
The garden office, the guest room, the backup plan.
GUIDE
Backyard Tiny Home for a Returning Adult Child
Your daughter is twenty-eight. She has a full-time job at a design agency and a lease that ended in April. Your son is twenty-four. He is finishing a graduate program he chose part
GUIDE
The Best Cash-Flow Metros for ADU Investors in 2026
Backyard ADUs — accessory dwelling units placed on existing single-family lots — have shifted from a niche housing category to one of the fastest-growing rental-income plays in the
GUIDE
Converting an Empty Nest into an ADU Rental
The kids' rooms are still there. The framed photos on the wall are still there. The lamp your daughter picked out in tenth grade is still there. And now — because you designed it t
GUIDE
Downsize Without Selling: ADU & Tiny Home Options
You don't have to sell the house to downsize.
GUIDE
Financing an ADU for Aging Parents: 2026 Options
That is what the financing pays for. Not the appliances, not the countertops. The independence. Which is finite, and expensive, and worth roughly whatever it takes.
COMPARISON
Guest House vs. ADU: The 2026 Comparison
Same structure. Different permit. Different tax bill.
GUIDE
How Big Is an Average Backyard in Feet? The 2026 Reference
The average American backyard is meaningfully smaller in 2026 than it was a generation ago, but the headline averages most often cited obscure dramatic differences by region, by me
GUIDE
Modern Mother-in-Law Suite: ADU Design & Cost Guide
It used to mean a room off the garage with a hot plate and a door that closed loudly. That version worked for nobody and reminded everyone of it. The modern version is a permitted
GUIDE
Mother-in-Law ADU: Design, Layout & Financing
The mother-in-law suite, reimagined by someone who actually likes her.
GUIDE
Multi-Generational Living: ADU Design Guide
The sitcom version has three generations sitting on the same couch, wearing matching sweaters, learning a lesson together. The real version has three generations quietly living the
GUIDE
NYC's Backyard ADU Law: The 2026 Homeowner's Guide to New York City's Game-Changing Housing Reform
New York City formally legalized backyard accessory dwelling units in March 2024 — the most significant single change to NYC residential zoning in over five decades — and the City
CITY GUIDE
Accessory Dwelling Units in Atlanta: The 2026 Buyer's Guide to ADU Permits, Costs, and Income
Atlanta legalized accessory dwelling units across most single-family residential zones in 2018, and the metro has since become one of the most ADU-active markets in the Southeast.
GUIDE
What States Allow ADUs? The 2026 State-by-State Guide
38 states permit ADUs by right. The other 12 make you work harder for it.
CITY GUIDE
Expandable Container ADUs in Phoenix, Arizona: The 2026 Buyer's Guide to a Market Built for Backyard Income
Phoenix is the most ADU-permissive major city in the American Southwest — the city's 2022 ADU ordinance allows one accessory dwelling unit per single-family parcel by-right, with n
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