Camas Home Additions

A home addition should look like it was always there

An addition expands the home you already have — unlike an ADU, which is a separate unit — and the real craft is making the new space look like it was always there. JDI Construction is a family-owned, Vancouver-based design-build remodeler, and on an addition our job is really two jobs at once: building the new space, and marrying it to the existing foundation, roofline, and walls. When it's done right, you can't tell where the old Camas house ends and the new part begins.

Our designers and trades work as one team, so the addition you approve is drawn to tie into the house that's actually there — we don't hand a set of plans to a separate crew and hope the new roof and foundation line up. Here's the range of additions we build, what makes them succeed, and what to expect on cost and timeline.

Types of additions we build

"Addition" covers a lot of ground, from a few extra feet to a whole new floor, and the right one depends on your lot, your budget, and how the house is built:

A few decisions worth making early

An addition rests on a few decisions that come before design. The first is up or out: building out is usually simpler and cheaper if your lot has room, while going up a second story avoids using yard but means verifying the existing foundation and framing can carry the extra load. The second is how much the existing home can support — whether the foundation, the electrical panel, and the heating and cooling system can serve the added square footage, or need upgrading as part of the project. And the third is what your lot actually allows: setbacks, lot-coverage limits, and height rules vary by jurisdiction, so we check the parcel before drawing. We work through all of it up front so the plan fits the house, the lot, and the budget.

What Camas homeowners add on for

Most additions we build in Camas come down to needing more of the home you already love rather than moving: a primary suite, an extra bedroom or two, a bigger family room, or a dedicated home office. Because it's attached and shares the roof, systems, and foundation with the main house, an addition keeps everything under one roofline instead of becoming a separate building the way an ADU would.

The challenge shifts with the home's age. On the older homes near the historic downtown and the Grass Valley area, the hard part is matching — siding profiles, rooflines, and trim that have weathered for decades. Up on Prune Hill and around Lacamas Lake, the newer homes are easier to match but more likely to have HOA and lot-coverage rules to design around. Either way, we treat the seams — foundation, roofline, exterior skin, and interior transitions — as the part that decides whether the addition looks original or added on.

What does a home addition cost in Camas?

Addition cost is driven first by type: a bump-out that borrows from the existing structure is far less than a second-story addition that requires reinforcing the foundation and framing below it. After that it's size, how much structural work the tie-in requires, how hard the existing materials are to match, and whether the systems need extending or upgrading. Because our design and our trades are both in-house, we can price the structural realities honestly up front and give you an itemized estimate once the addition is drawn, so the number reflects your house and your lot rather than a generic per-square-foot figure.

How long does a home addition take?

An addition is a months-long project more than a weeks-long one, because it runs through design and engineering, permitting, foundation and framing, tying into the existing structure, and then finishes. Second-story and structural additions take longer than a simple bump-out. We give you a realistic schedule before demolition, handle the engineering and permits the work requires, and sequence it to keep the existing home weather-tight and livable while the new space goes up.

Why homeowners in Camas choose JDI

An addition is where design-build earns its keep, because the design, the structural engineering, and the construction all have to agree for new and old to meet cleanly. As a single accountable team, we handle the plans, the load paths, the tie-in, and the finishes under one roof, so nothing falls through the gap between an architect and a separate builder. We manage the permitting, keep you updated through our client portal, and stand behind the work with a five-year workmanship warranty. Being just across the river in Vancouver, we're close enough to be on-site and responsive throughout a project this involved.

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