# Websites for ADU & addition builders that turn searches into qualified project inquiries

> A website for ADU & addition builders has one job: turn searches like "accessory dwelling unit cost" into qualified project inquiries. We build it around 8 core pages, including what an ADU is, attached and detached ADUs and floor plans, add a floor plan library with sizes, and make every page fast and readable by Google and AI assistants.

## The pages your website needs
- Home
- What an ADU is
- Attached and detached ADUs
- Floor plans
- Costs and financing
- Zoning and permits by town
- Our projects
- Start planning

## What the website must do
- A floor plan library with sizes
- A zoning explainer that links to each town's official rules
- A cost and financing guide
- Project stories with families and uses
- A planning inquiry form

## Built to turn visits into qualified project inquiries
- A project inquiry form that asks budget and timeline
- Portfolio filters by project type and location
- Consultation booking
- A process page linked from every project

## Built to be read by Google and AI assistants
- Server-rendered HTML, so AI crawlers read every page without JavaScript
- GeneralContractor and Organization structured data that matches the page
- An answer-first opening on each service page
- Core Web Vitals in the good range on phones
- Optional llms.txt and markdown versions of every page
- Accessible design, clean headings and labeled images

## Recommended platforms
- [Wix & Wix Studio](https://sproutgrowthengine.com/platforms/wix-studio/)
- [Headless & Static Sites](https://sproutgrowthengine.com/platforms/headless/)

## Frequently asked questions
### What should an ADU builder website explain?

What an ADU is, the options, costs, and how zoning and permits work, with links to each town's official rules.

### Do floor plans help sell ADUs?

Yes. Floor plans with sizes help homeowners picture the project and ask better questions.

### How much does a website for ADU & addition builders cost?

Website projects are quoted by scope after a short discovery call, based on the number of pages, features such as booking or online sales, and how much content we write. If you also want ongoing SEO, Sprout's published monthly plans start at $500.

## Related
- [SEO and AI visibility for ADU & addition builders](https://sproutgrowthengine.com/industries/adu-builders/)

---

Sprout Growth Engine is the AI search and organic growth practice of Sprout for Business, LLC. 15 Cross Rd, Unit 4, Hooksett, NH 03106. Phone 603-227-5240. Contact form: https://sproutgrowthengine.com/contact/. Rated 4.8 out of 5 from 59 Google reviews (https://search.google.com/local/reviews?placeid=ChIJj9ZDxjZq4okRzO1Wn8jLTb0, checked 2026-09-29).

HTML version: https://sproutgrowthengine.com/industries/adu-builders/website-design/