Fairview ADU Builder

The groundwork that makes a Fairview ADU possible

Whether it's a backyard cottage, a garage conversion, or a basement unit, an ADU lives or dies on zoning, setbacks, and how the utilities connect. JDI Construction is a family-owned, Vancouver-based design-build remodeler, and we approach an accessory dwelling unit — a second, independent home on your property — with one conviction: the design has to answer to the site and the code, not the other way around. Fairview is a small east-county city near Fairview Lake and the Columbia, with a mix of older streets and newer subdivisions, and that range means the right answer for a lot near the lake can look nothing like the one two neighborhoods over — which is why we confirm what your parcel allows first.

Our designers and trades work as one team, so the unit you approve is grounded in what the site and the code actually permit — we don't hand a hopeful floor plan to a separate crew and find out later it won't pass. Below are the parts that matter most on a Fairview ADU, along with what to expect on cost and timeline.

The parts that matter most

A successful ADU comes down to getting a handful of things right from the very start:

A few decisions worth making early

The choices that shape an ADU come well before design. The first is feasibility: Oregon encourages ADUs across the state, but the working details — size limits, setbacks, height, parking, and fees — live in local code and change from one jurisdiction to the next, so what the City of Fairview allows on your lot is a question we settle before drawing anything. The second is type and use: a garage conversion, a basement unit, an attached addition, and a detached cottage carry very different costs and site demands, and on lots closer to Fairview Lake or lower-lying ground, drainage and grading can weigh on the decision alongside how you'll use the space — rental, family, or workshop. The third is budgeting for the parts you can't see — the sewer, water, and power connections and the system development charges that accompany a new dwelling. We map all of it out up front so there are no surprises after the plans are set.

What Fairview homeowners build ADUs for

Most Fairview homeowners who reach out have a clear use in mind: a rental for income, a comfortable and private space for aging parents or adult children, or a home office or studio kept separate from the main house. Each use pulls the design a different direction — a rental favors durable materials and its own entrance, while a unit built for family tends toward single-level, step-free living that stays comfortable over time.

Across Fairview's older lots and its newer subdivisions alike, a compact unit succeeds on how well it's designed, not just how big it is. We shape the footprint to live larger than its square footage, drawing on daylight, built-in storage, and ceiling height to make a small home feel open — and we site it to work with the existing house, the setbacks, and how the utilities reach the property.

What does an ADU cost in Fairview?

ADU cost is driven first by type: a garage or basement conversion that reuses an existing structure generally costs less than a detached cottage built from the ground up. After that come size, finish level, and — the part homeowners most often underestimate — the site and utility work. Running sewer, water, and power to a new dwelling, managing grading and access, and covering connection charges can make up a meaningful share of the budget, which is exactly why we scope them early. With design and trades both in-house, we provide an itemized estimate once we know what your lot allows and which type fits, so the number reflects your project rather than a generic per-square-foot figure.

How long does an ADU take to build?

An ADU runs on three clocks: feasibility and design, permitting, and construction. Permitting for a second dwelling can take longer than a standard remodel because it draws in zoning and utility review, so we build that time into the plan instead of promising a quick turnaround. Once permits are issued, the construction phase depends on the type — a conversion moves faster than a ground-up cottage. We share a realistic schedule after the feasibility check, handle the permitting on your behalf, and keep you updated through our client portal as the unit takes shape.

Why homeowners in Fairview choose JDI

An ADU rewards a builder who understands the rules as thoroughly as the construction, because a project like this can stall at the permit counter long before the first wall goes up. As a single accountable design-build team, we carry the feasibility, the design, the utility connections, and the build under one roof, so nothing gets lost between a zoning question and the crew on site. We manage the permitting, keep you informed through our client portal, and stand behind the work with a five-year workmanship warranty. Fairview is a short drive from our Portland–Vancouver metro base, so we're close enough to stay responsive throughout a project this involved.

JDI Construction — "Built by family. Trusted by neighbors." Design-build remodeling and ADU construction based in downtown Vancouver, WA, serving Fairview and the greater Portland–Vancouver metro since 2007.