ADU Adventures: Building in Your Backyard

The Backyard Hedge: Why LA Homeowners Build Small First | EP010

Acton ADU Episode 10

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0:00 | 13:45

LA homeowners are doing something that looks backwards until you sit with it: they're building the small thing before the big thing. Instead of remodeling the main house first, they're putting an ADU in the backyard and using it as the anchor for everything that comes next.

We walk through why Los Angeles County became ground zero for the backyard-first strategy — from the post-2017 California ADU law changes to faster approvals, larger size allowances, and a growing library of pre-approved ADU plans. We also get into how major fire recovery accelerated the shift for a lot of families, turning ADUs into a practical way to create housing on-site while longer rebuilding decisions play out.

Then we talk money, in plain language. We break down typical ADU construction cost ranges, the rental income benchmark that can offset real bills, and the three-way "hedge" a good accessory dwelling unit can create: monthly cash flow, stronger loan qualification (including lender guidance that can count projected ADU rent), and potential property value gains through appraisal methods that consider rental income.

We also name the four ways this goes sideways in LA — from surprise sewer and utility upgrades to cheap construction that costs more over time, plus fire hardening, insurance, and overleveraging.

Thinking about building? Share this with a neighbor who's been on the fence, then subscribe, leave a review, and tell us your situation: would you build the backyard first, or start with the main house?

ADU Adventures is brought to you by Acton ADU — design-build ADUs across the Bay Area and LA County.

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This episode of ADU Adventures: Building in Your Backyard was sponsored by Acton ADU—California's experts in high-quality, long-lasting accessory dwelling units (ADUs). With 35+ years of experience, they handle everything from design to permits to construction, making the whole process seamless for homeowners.

Thinking about building an ADU? Visit ActonADU.com or call (408) 539-1908 to get started.

Thanks for listening—see you next time!

Acton ADU – The Home of the Build-Ready ADU, Serving Homeowners for Over 35 Years

With over 35 years of experience and 5-star reviews that speak for themselves, Acton ADU is the leading expert in Accessory Dwelling Units (ADUs) in the San Francisco Bay Area. Based locally in Campbell, California, we proudly serve homeowners in over 20 cities—from Redwood City to San Jose and as far south as Gilroy.

We specialize in high-quality, traditionally built backyard homes, providing turnkey ADU solutions that save time and money without sacrificing quality. As the home of the Build-Ready ADU, we offer fully curated, pre-designed ADU Packages designed for multi-generational living and long-term property investment. Whether you're considering a mother-in-law suite, casita, or granny flat, our team ensures a seamless, stress-free experience from design and permitting to construction and warranty.

Why Homeowners Choose Acton ADU:

  • Locally based in Campbell, CA – serving over 20 cities from Redwood City to Gilroy
  • Over 35 years of expertise in building high-quality ADUs
  • Build-Ready ADUs – pre-approved, expertly designed backyard homes for faster approvals and lower costs
  • Custom ADU solutions – tailored to fit your property and lifestyle
  • 5-star reviews that highlig...

Why The Backyard Goes First

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Welcome back to ADU Adventures Building in the Backyard. I'm James, and today I want to do something a little different. No checklists, no step-by-step, just me thinking out loud about something I keep noticing, especially in Los Angeles County. Here's the thing I can't stop turning over in my head. All over LA, homeowners are building the small thing before they're building the big thing. They're putting up the ADU in the backyard before they touch their main house. Some of them are rebuilding after a hard year. Some are just looking at the property differently than they have been five years ago. But the pattern is the same. The backyard is going first. And when you sit with that long enough, you start to realize it isn't a quirk. It's a strategy. A quiet, stubborn little strategy that a lot of LA homeowners have stumbled into, and a few have figured out on purpose. So today that's the conversation. Why the backyard goes first? What get for it? And because I'd never just sell you the bright side, what it costs you if you get it wrong. This isn't a pitch, it's more of a musing. Uh thinking out loud. Think of it as the long version of a conversation we'd have over the back fence. But before I make the case for any of this, let me tell you why I get to make it. I didn't come to ADUs from a spreadsheet. I came to them by living in them. I was born in Michigan Viejo, California, uh an Orange County kid. My family moved up to the Bay Area when I was young, but Southern California never really let go of me. I've got family there, et cetera. And sure enough, when it came time for college, I headed right back down. I lived in San Fernando Valley for several years, and uh that's where I met my first day to use. Except back then, nobody

My ADU Origin Story

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called them that. They were the converted garages, the backhouse units, the casitas, the granny flats, the unit in the yard. And you'd find them scrolling through housing listings if you were a renter. And I'll be honest with you, most of them were unpermitted, and a lot of them, let's say, were underdeveloped. Sand walls, funny wiring, comfort somewhere near the bottom of the priority list. But the idea stuck with me. A whole separate place to live, tucked onto someone else's lot. There was something there, something convenient, something good, and definitely an investment. Then a few years later I moved back to the Bay Area, right after college, and I got to live in the better version. My first real ADU was a converted water tower. I'm not making that up. Three levels, laundry and storage at the bottom, kitchen and bath in the middle, and a lofted bedroom area on top. Good little place, great neighborhood. And the best party trick of my life, telling people, oh yeah, I live in a water tower. The neighborhood kids took one look at it and started calling it the Wizard Tower, and honestly, that name stuck and I kind of loved it. So by the time I built my own ADU in San Jose, California for my parents and siblings, I wasn't guessing. I'd lived the unpermitted version and the charming version, and I'd felt the difference between a space somebody threw together and a space somebody actually thought about. That difference? Well, that's what this episode's about. Now, let me set the scene and let's talk about LA specifically, because LA is its own animal. And when I say LA, I really mean the whole LA County area. I'm talking about San Fernando Valley and San Gabriel Valley and the West Side. I'm talking about everything. For a long time, building anything extra on your lot in Los Angeles was a slog. Permits, passageway rules, parking requirements, a maze designed to wear you down. Then the rules changed. Starting in 2017, California passed a wave of laws that

LA Laws Changed The Game

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forced cities to get out of the way. And LA responded like a city that had been holding its breath. According to the Sightline Institute, in just two years after that law took effect, ADU permits in Los Angeles surged by a factor of 30. 30. At one point, accessory dwelling units made up about a fifth of all permits the city issued for new homes. That's not a trend. That's a damn breaking. And it wasn't just LA. UC Berkeley's Turner Center found that statewide ADU permits jumped around 6,000 in 2018 to roughly 16,000 the very next year, and completions more than triple. Most of that activity clustered in three places. Los Angeles, San Diego, and of course the Bay Area. So why LA specifically? Why has the backyard become the smart move here more than anywhere else? Well, there's a few reasons. LA gave homeowners genuinely flexible rules. In a county, you can build a detached ADU up to twelve hundred square feet, that's per LA County Public Works' own guidelines. A junior ADU inside your own home can be up to 500, and under state law, the county has to approve or deny a complete application within 60 days. 60 days, not the 18 month Odyssey people remember from the old days. LA also leaned into pre-approved plans. LA Planning runs a program where architects have already designed ADUs that the county has pre-vetted. So you can pull a plan off the shelf and skip a big chunk in the review. And then there's the part nobody plan for. After the January 2025 fires, Palisades and the Eton fires, which the Associated Press reports destroyed about 13,000 residential properties. The state moved fast on housing. Los Angeles County's own recovery office documented that the governor issued an executive order specifically to make it easier to build ADUs, to give displaced families a place to live while the long road of rebuilding played out. Think about what that did to the mental model. For a lot of LA homeowners, the ADU stopped being a someday maybe project. It became the first potential move, the thing you build first. So you have somewhere to stand while everything else takes shape. You build the backyard first, then you deal with the house. And that reframe, the small thing first, is where the real story starts. So let's talk about why the backyard first move is so financially smart. Because this is the part that surprised even me. And we can just stop thinking about an ADU as an expense as well. Just for a few minutes at least. Start thinking about it as a hedge. Think of it as an investment. A hedge is something you put in place to protect yourself when you don't exactly know what's coming. And if there's one thing I can promise you about the next 10 years in LA, is that you don't know exactly what's coming. None of us do, no matter where you are in California. Here's how the numbers actually shake out. The Turner

The ADU As A Financial Hedge

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Center's statewide survey of ADU owners found that the median ADU cost was about $150,000 to $250,000. And 71% of ADUs came in under $200,000. But a premium built to last unit will run you more than that medium, and I'll be honest about that. But that's your ballpark for the category. Now here's the hedge. That same survey found the median ADU in California rents for about $2,000 a month. $2,000 a month coming in against whatever life throws at you. And it compounds in three directions at once. Obviously, direction one is income. The rent can cover a mortgage payment, a property tax bill, a kid's tuition, an aging parents' care. Or it can just sit there as a cushion. Direction two is qualifying power. And this one's new and it's big. As of an October 2025 update to its selling guide, Fannie Mac now lets you count the rent your ADU would bring in toward the qualifying for the loan. Up to 30% of that total qualifying income. Freddie Mac allows something similar. Translation? The thing you're building can help you afford to build it. Now direction three is property value. Freddie Mac says plainly that an ADU may increase a home's long-term and resale value. And here's the mechanism most people miss. The appraisal institute has laid out how appraisers can factor an ADU's rental income directly into what the property is worth. So a unit that earns more doesn't just earn more, it can be worth more on the appraisal too. Income, qualifying power, and value all from the one structure. And that's the hedge. And notice every one of these levers gets stronger when the ADU is good. A well-built, well-designed unit rents higher. Rents to better tenants, appraise is higher, and costs less to keep up. The quality isn't the luxury version of the decision. The quality is the decision. That's why building the backyard first isn't just emotionally smart in a year like this one. It's financially smart every year. You're not spending $250,000. You're installing a hedge that pays back in three currencies. But where can a hedge go wrong? Now I told you I wasn't going to just tell you the bright side, because a hedge only works if you build it right. And there are real ways this goes wrong. Let's name some. Risk one, the surprises under the surface. I've seen it a hundred times. A homeowner has a the perfect plan. And then the city flags an old sewer line that isn't up the code or a utility connection that needs an upgrade nobody budgeted for. In LA with older properties and tight lots, the ground has opinions. If you don't

Four Ways This Goes Wrong

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do a real property assessment before you fall in love with the design, the surprises find you. And surprises mid-project are never cheap. Risk two, building it cheap to save money and paying more anyway. This one hurts to watch. People shave the budget on the build, and then they pay for it for the next 30 years. There's an industry analysis from the property operations firm Released, showing the reactive maintenance, the fix it when it breaks kind of cheap construction guarantees, runs about 25 to 30% more than preventative well-built system. You don't save money, you just defer it with interest. Risk three. And this is an LA specific one, fire and insurance. If you're building in or near a high fire severity zone, your ADU needs to be hardened for it. And you need to think hard about how it changes your insurance picture. That's not a reason to walk away. It's a reason to plan with people who know the local landscape cold. And then risk four is overleveraging. A hedge you can't afford to carry isn't a hedge, it's a liability. Build within your budget or within a budget designated to make sense for the investment. Here's the honest through line on all four, though. Every one of these risks is a planning failure, not an ADU failure. The unit isn't the gamble. Going in without a clear-eyed plan is the gamble. Do it right, and the risks shrink to almost nothing. Do it on a hope and a low ball estimate, and the hedge turns on you. Now, here's the heart of it. Let me tell you why this one matters to me. You heard a little bit about my ADU history earlier. The unpermitted units in the valley, the water tower, the place I built in San Jose for my folks, years of living in and around these buildings. And what all of it taught me is that the financial case and the human case are actually the same case. When you put a hedge in your backyard, you're protecting your options, your ability to keep a parent close, to give a kid a soft landing, to stay in the neighborhood you love when the ground shifts

Control Options And Next Steps

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under you, and in LA, the ground shifts, let's be honest. That's what control really is. It's not knowing what's coming, it's being ready for anything. The homeowners that build the backyard first, well, they've figured out something quietly profound. The smallest building on the lot is the one that gives you the most room to move. Anyway, those are the musings I wanted to get out today. Uh why the backyard goes first, why a good ADU is one of the smartest hedges a Los Angeles homeowner or really any California homeowner can make, and why doing it right is the whole ballgame. Thank you for spending a time with me. And thank you for thinking about your home as not just where you live, uh, but the thing that can carry your family forward. If any of this got your gears turning, that's all I really wanted. And if you ever want to talk through your own project or through your own possibilities with people that have been doing this a long, long time, Actin ADU has been building for more than 35 years throughout California. We don't just put up units, we help families think through the whole picture, the budget, the plan, the no surprises version of this whole thing. And if that's useful to you, you can find us at actinadu.com or give us a call at 408 369 1103 for a free consultation. No pressure, just a conversation. That's it for today. I'm James, and this has been ADU Adventures Building in the Backyard.