About ADUPlanet
We help homeowners plan, finance, and build Accessory Dwelling Units with confidence—combining verified regulations, transparent cost tools, and a curated builder network.
Who We Are
Our Mission
Unlock housing and long-term value by making ADUs easy, transparent, and compliant—no guesswork, just actionable steps.
Regulations
State + city rules summarized with outbound links to official portals.
Costs
Live calculators + case studies for realistic budgets.
Builders
Prefab & custom directories + an RFQ form to match your project.
Financing
Clear comparisons and a monthly payment calculator, including interest-only options.
Our Methodology
- Verify first: We cite official state/city planning sources and HUD/FHA where applicable.
- Update often: Pages include dateModified and a freshness note in the footer.
- Accessible by default: WCAG-minded typography, ARIA on forms/charts, speakable summaries.
- AI-first SEO: Structured data (JSON-LD) and scannable Q&A that AI search engines can trust.
Why Homeowners Trust ADUPlanet
5
Core guides live
1,000+
Lines of verified site knowledge
2
In-depth cost case studies
4
Interactive tools & forms
How We Work With Builders & Lenders
Builder Directory & RFQ
We list both prefab and custom builders and route serious projects via a simple Request-for-Quote form.
Financing Options
Compare HELOC, cash-out, construction loans, and FHA 203k in one place—plus a monthly payment calculator.
FAQ
Is ADUPlanet free to use?
Yes. Our planning guides are free. If you submit an RFQ, we may earn a referral fee from partners—never from marking up your costs.
How current is the regulatory information?
Each regulation page includes outbound links to official portals and a dateModified stamp. For city-level fees/timelines, look for {{verify locally}} notes that link to city sites.
Do you recommend specific builders?
We provide a directory and request details via /estimate to match you with suitable prefab or custom teams based on type, budget, and timeline.
Can you estimate my ADU cost?
Use the Cost Calculator on the Costs page for a realistic starting range, then refine with a builder RFQ.
Will an ADU raise my property taxes?
It depends on your state and local rules. See your state/city regulation page; we surface the relevant tax and assessment notes with official references.
How do you handle my data?
We use privacy-friendly analytics and only share RFQ details with matched partners. See our Privacy Policy for full details.