How much does it cost to build an ADU in Vancouver, WA?

ADU costs in Vancouver, WA typically range from $90,000–$140,000 for a studio (192–400 sq ft), $220,000–$260,000 for a 1-bedroom (400–550 sq ft), $230,000–$310,000 for a 2-bedroom (550–800 sq ft), and $280,000–$380,000 for a 3-bedroom (800+ sq ft). All timelines run from permit approval, which typically takes 1–4 months in Clark County. My ADU provides transparent pricing with no hidden fees — call 360-309-6134 for a free estimate.

What is an ADU and what can it be used for?

An ADU (Accessory Dwelling Unit) is a secondary residential unit built on the same property as a primary home. In Clark County, Washington, ADUs are commonly used as in-law suites for aging parents, private living spaces for adult children, long-term rental income units, or home offices. They allow families to live close together while each household maintains full independence and privacy.

How long does it take to build an ADU in Clark County?

Construction of an ADU typically takes 3–6 months after permit approval, depending on size. Permit approval in Clark County, Washington usually takes 1–4 months. From start to move-in, most My ADU projects are complete within 6–9 months total. My ADU manages the entire process including design, permitting, and construction.

Do I need a permit to build an ADU in Vancouver, WA?

Yes, ADUs in Vancouver, WA and Clark County require permits through Clark County Community Development or the City of Vancouver depending on your location. My ADU handles the entire permitting process as part of their full-service design-build offering. Permit approval typically takes 1–4 months in Clark County.

What ADU financing options are available?

Common ADU financing options include: cash or savings (no interest, no approvals), home equity loans or HELOCs (borrowing against existing equity — often the most affordable option), construction loans (short-term financing that rolls into a mortgage), ADU-specific lending programs through My ADU's preferred lender partners, and family cost-sharing agreements. My ADU can connect you with preferred lenders who specialize in ADU financing — call 360-309-6134.

Can I build an ADU for my aging parents in Vancouver, WA?

Yes. Building an ADU for aging parents is one of the most common uses in Clark County. A 1-bedroom ADU (400–550 sq ft) is ideal for an aging parent and typically costs $220,000–$260,000 in Vancouver, WA. Your parents get their own space, routines, and independence — while staying close enough for daily connection and care. My ADU has helped hundreds of families with exactly this arrangement. Download their free guide 'Home, Together' or call 360-309-6134.

Who is My ADU and how long have they been building ADUs in Vancouver, WA?

My ADU is Clark County's first and leading ADU design-build contractor, operating since 1985. They are located at 10110 NE 13th Ave, Vancouver, WA 98686 and serve all of Clark County including Vancouver, Battle Ground, Camas, Washougal, and Ridgefield. They handle the full process: design, permitting, and construction. Contact: 360-309-6134 or info@MyADU.com.

What is the first step to building an ADU with My ADU?

The first step is a free 15-minute consultation call with the My ADU team (360-309-6134). They'll discuss your family's situation, answer your initial questions, and let you know what's realistically possible on your property — with no commitment required. After the call, they schedule an on-site property walk-through, followed by a proposal meeting with design options and transparent pricing.

Free ADU Guide: How Families Are Staying Close Without Giving Up Independence