Eugene homes have character worth building around, not over. Our in-house designers, project managers, and carpenters handle your addition from start to finish at a fixed price and backed by a five-year warranty.
Eugene-area home additions range from targeted bump-outs to full second stories, and the investment scales accordingly. Here's how to find where your project fits.
Just a Few Extra Feet.
Sometimes a kitchen remodel or bathroom renovation calls for just a bit more room. A bump-out extends an existing wall by a few feet, giving the project the square footage it needs without fundamentally changing the home's footprint.
Significant Expansion of an Existing Floor.
A standard addition builds new, dedicated space onto an existing floor of your home. It typically involves its own foundation, framing, roofing, and systems, and is designed from the start to feel like it was always part of the house.
Building Up or Down.
Adding a second story or excavating a basement transforms the fundamental structure of your home. These are the most complex additions Neil Kelly builds, involving significant engineering, permitting, and coordination from the ground up.
Our Eugene design team covers most of Lane County, and they've spent years learning what this housing stock actually needs from an addition: the Craftsman bungalows around Amazon Park and College Hill, the mid-century modern homes woven through so much of the city, and the Colonial and Tudor revivals in the older South Eugene neighborhoods. They're fluent in the local permit process, and they understand how to add onto a Eugene home without it looking or feeling tacked on.
Each designer brings something different to the table—design style, universal and accessible design, historic-home expertise, and multigenerational living arrangements. Whatever your addition calls for, someone on this team has already solved for it. That combined range is what makes the team more capable together than any one designer alone.
Here's what Eugene-area homeowners say about working with Neil Kelly.
4.6 out of 5 · 2,200+ verified reviews on GuildQuality
Staff are all pleasant and helpful while being considerate of my space and time. Customer service overall is superior and I'm very picky about that.
It was an excellent experience. They treated us brilliantly. They were professional throughout the project.
Neil Kelly manages the entire project; everything is clearly laid out and the project manager keeps you updated on what's happening. All done with professionalism,courtesy, and friendliness.
Every Neil Kelly home addition in Eugene moves through six clear phases, with the same team handling design, planning, and construction from start to finish. No separate designers, contractors, and subs left to coordinate on their own.
A Neil Kelly designer will come to your home for free 60-to-90-minute discussion. We'll talk through your goals, your constraints, and what kind of home addition is actually possible. No commitment required — and no need to tidy up first.
Scope confirmation, floor plan options, and materials direction. You'll see alternatives, get answers to your questions, and further shape the direction before we make any detailed drawings.
Full plans, full specs, and every material selected. This phase is where your home addition concept becomes a clear direction and pricing gets finalized.
The number we agree on is what you pay. Permits filed, materials ordered, schedule set. No surprises when construction starts.
Construction by Neil Kelly's in-house carpenters. You'll get weekly updates from your project manager as they handle trades, schedules, and daily details.
Final walkthrough. Anything that's not quite right gets fixed before you sign off. Five-year warranty coverage starts on completion.
Lane County's housing stock presents specific challenges that affect every home addition. Knowing them up front saves time, money, and frustration.
Eugene's rainy-season humidity runs high, and once we open up a wall or floor for an addition's tie-in, hidden wood rot, mold, and weakened framing are common discoveries. We check moisture conditions during the home visit and build remediation into the scope before it becomes a mid-project surprise.
Extending a home's footprint often means extending its plumbing and electrical systems too, and older Eugene neighborhoods frequently have aging galvanized pipe and wiring that isn't equipped to support it. We identify these conditions early so upgrades are part of the plan, not an afterthought once walls are open.
A large share of Eugene homes built between the 1940s and 1960s contain asbestos in their original building materials, and an addition's demo and tie-in work can expose it. We test for hazardous materials before any demolition starts and handle disposal through designated facilities. This step isn't optional in older homes.
An addition depends on what's already holding up the existing structure, and older Eugene homes frequently have uneven floors and shifting foundations beneath the surface. We assess these conditions before tying new construction into the existing footprint so we can plan for structural corrections.
Several Eugene neighborhoods carry historic designation, including the Washburne Historic District near downtown, College Hill, Fairmount, and the South and West University areas. Because an addition changes a home's exterior by definition, most additions in these areas require a Historic Resource Review through the City of Eugene's Historic Preservation Program before permits are issued. We flag this during the consultation and build the review timeline into your project schedule from the start.
Cost depends on size, scope, and whether major structural changes are required. A small bump-out typically costs less than a full addition. Neil Kelly provides accurate estimates during the design phase.
The Eugene office serves Eugene, Springfield, Corvallis, and surrounding communities in the Willamette Valley.
Timeline varies by scope — a simple bump-out may take a few months; a full addition with new foundation, plumbing, and electrical can take 6-12 months or more. The design phase adds time before construction begins.
A bump-out extends an existing room by a few feet using the existing foundation. A full addition adds notable square footage with its own foundation, framing, roofline, and systems. Bump-outs are less expensive; full additions are more involved.
Yes. Second-story additions require structural evaluation of the existing foundation and framing, and involve significant permitting and engineering. Neil Kelly design-build team manages all of this.
Adding well-designed square footage typically increases a home's market value, especially for ADUs, primary suite additions, or additional bedrooms. ROI varies by market and project quality.
Schedule a consultation with our Eugene team and find out what it actually takes to add on to your home, from permitting through final walkthrough.
