One-Story vs. Two-Story ADU: Which Fits Your Boise Lot?
Every ADU project starts with the same question: build out, or build up? The right answer depends on your lot, your budget, and what you want the space to do. If you haven’t read it yet, our Ultimate Boise ADU Guide covers the basics of ADUs in Boise — this article goes deeper on one […]
Massive Change to ADU Appraisals is Happening (2026)
If you own or are planning to build an Accessory Dwelling Unit (ADU) in Idaho, a major shift in property valuation / adu appraisals is approaching. On November 2, 2026, the new national UAD 3.6 appraisal standard becomes mandatory for all residential mortgages sold to Fannie Mae and Freddie Mac. As the biggest change to […]
How Much Does It Cost to Build an ADU in Boise? (2026 Pricing Guide)
If you’re wondering how much it costs to build an ADU in Boise, you’re asking the right first question — and it’s the hardest one to get a straight answer to. As a Boise ADU builder, it’s the question we hear more than any other. If you’re still working out whether an ADU is even […]
Idaho’s New ADU Ownership Law: Which City Will Adopt It First?
Idaho lawmakers passed a new law in 2026 that could change how homeowners finance and eventually own an accessory dwelling unit (ADU). It’s separate from the ADU legalization law that cities must follow by February 2027. This one is optional, and no city in the Treasure Valley has adopted it yet. If you’re new to […]
Boise ADU Zoning Rules: Setbacks, Size Limits & Design Standards
Before you design your ADU, it helps to know exactly what Boise’s zoning code allows. As a Boise ADU builder, Mode Homes works from the current code every day — if you haven’t already, our complete guide to building an ADU in Boise covers the full process; here’s the detailed breakdown of size limits, setbacks, […]
Can Your HOA Stop Your ADU in Idaho?
If you live in a Boise neighborhood with an HOA and you’re thinking about building an ADU, you’re probably wondering whether your HOA can say no. If you’re new to ADUs generally, our complete guide to building an ADU in Boise covers the basics; here’s exactly what Idaho law says your HOA can and can’t […]
Idaho’s New ADU Law, Explained: What Boise Homeowners Need to Know
Idaho passed a new law that changes how cities can regulate accessory dwelling units — and it applies directly to Boise. Here’s what the law actually says, what it means for you, and what’s still catching up to it. The Law: Idaho Code §67-6541 Idaho Code §67-6541, added in 2026, sets statewide rules for accessory […]
How to Finance an ADU in Boise: Your Complete Guide to ADU Financing
Building an ADU in Boise is a smart way to add rental income, house family, or grow your property’s value. But most homeowners hit the same wall first: how do you actually finance an ADU in Boise? Whether you’re financing an ADU on your primary residence or an investment property, Boise ADU financing comes down […]
The Ultimate Boise ADU Guide (2026)
Thinking about building an ADU but not sure where to begin? This beginner-friendly guide explains the entire process—from property evaluation and design to permits, financing, and construction.