Kempf Construction LLC is a licensed general contractor Florence OR homeowners, business owners, and property investors can trust, backed by more than 20 years of building experience across Oregon, including coastal construction built to last in a salt-air, high-moisture environment. From custom homes overlooking the dunes and the Siuslaw River to kitchen remodels in Old Town Florence, ADUs throughout the area, and commercial build-outs along Highway 101, we manage residential and commercial construction from the first sketch to the final walkthrough. Our team is CCB-licensed, bonded, and insured under CCB #260337, giving clients confidence that every project is handled with professionalism, accountability, and care. We build for the Oregon Coast with weather-tight methods, durable materials, corrosion-resistant details, and planning suited to Florence’s coastal climate, sandy soils, permitting requirements, and long-term property needs.
Why Choose Us

For over two decades, Florence homeowners, property investors, business owners, and developers have trusted Kempf Construction to deliver projects on time and on budget. Here’s what sets us apart:
- Licensed, bonded & insured - Oregon CCB #260337
- Fixed-bid pricing so you know your costs before we break ground
- In-house project management - one point of contact from permit to punch list
- Built for the coast - corrosion-resistant materials, weather-tight construction, and Lane County coastal permitting experience
Years in Business
Projects completed
On-time delivery
Our Services
General Contracting
As your general contractor, Kempf Construction LLC oversees every detail of your project; from design coordination and permitting with the City of Florence and Lane County to scheduling, materials, inspections, and final delivery. Our licensed subcontractors and in‑house management ensure each phase runs seamlessly. Whether you’re expanding a home, opening a storefront, or starting a new build, we keep your project organized, code‑compliant, and on schedule.
Residential Construction
We build homes for the way the coast lives. Our residential construction services cover new single-family homes, full structural framing, and ground-up builds on dune, riverfront, and view lots throughout the Florence area. From energy-efficient designs built to withstand coastal wind and moisture to layouts that frame the dunes, the Siuslaw River, and the Pacific, we build durable, beautiful homes designed to last in a demanding coastal climate.
Commercial Construction
Florence business owners and developers rely on us for tenant improvements, retail and office build outs, and complete commercial construction. We coordinate with architects, engineers, and city officials to deliver code compliant commercial spaces that include restaurants, professional offices, medical facilities, retail environments, and mixed use projects. Every space is built to perform in coastal conditions while keeping your operations running smoothly and your timeline clear and predictable.
Remodeling
Whether you own a classic cottage in Old Town Florence or a newer home near the dunes, our remodeling services bring renewed life to existing spaces. We handle whole home renovations, room by room updates, and structural remodels that enhance function, comfort, and resale value while addressing the wear and tear caused by coastal weather.
Home Additions
Need more space without leaving the coast? Our home addition services create the extra square footage you need most, including primary suite additions, second stories, expanded living rooms, sunrooms, and bump outs. We integrate new construction seamlessly with your existing structure so the addition looks and feels original to the home and is built to the same weather tight coastal standard.
ADU Construction
Accessory dwelling units are one of the smartest ways to add value, vacation-rental income, or multigenerational living space in Florence. As an experienced ADU builder, we handle detached and attached units, garage conversions, and shop conversions, fully permitted under Oregon and City of Florence ADU rules. ADUs are especially popular here for short-term and vacation rentals given Florence's strong tourism draw, as well as on larger lots and acreage around the area.
Our Construction Process
Free Consultation
We meet with you to review your goals, site conditions, and budget. This first step ensures we understand your vision and can provide accurate guidance from the start.
Fixed‑Bid Estimate
You receive a clear, written scope of work and a fixed price. No surprises, just transparent numbers and a defined plan.
Design & Permitting
Our team finalizes plans and secures all required City of Albany and Linn County permits. We handle the paperwork so your project moves forward smoothly and on schedule.
Construction
Skilled crews build according to plan, maintaining a clean job site and providing regular progress updates. We coordinate trades and inspections to keep everything efficient and organized.
Inspections
Every phase passes required code inspections to ensure safety, compliance, and long‑term durability.
Final Walkthrough
We don’t finish until you’re satisfied. Together, we review every detail to confirm the work meets your expectations and our quality standards.
Local Spotlight: Building & Expanding Homes Across Florence
Sitting where the Siuslaw River meets the Pacific Ocean on the central Oregon Coast, Florence is one of western Lane County’s most distinctive building markets, and we build for its demanding coastal setting. Salt air, wind driven rain, high humidity, and sandy dune soils all influence how a home must be built here, which is why we use corrosion resistant materials, weather tight detailing, and proper drainage on every coastal project. We build ground up custom and view homes near the Oregon Dunes National Recreation Area and along the riverfront, where ocean, dune, and river views make custom builds, ADUs, and view oriented additions especially desirable. We also complete careful remodels on the charming cottages and shops of historic Old Town Florence and meet the steady demand for vacation and short term rental ADUs created by the area’s strong tourism economy.
Anchored by tourism, fishing, and a growing retirement community, and surrounded by the dunes, lakes such as Woahink and Siltcoos, and the iconic Heceta Head Lighthouse to the north, Florence continues to attract new residents and second home buyers. The neighboring coastal communities of Dunes City, Mapleton, Reedsport, Gardiner, and Yachats are also growing with new homes and ADUs on view, dune, and acreage lots. As the coast expands and homeowners choose to build or improve rather than relocate, Kempf Construction helps them add ADUs, remodel, and build new homes that are fully permitted, code compliant, and engineered to last in the coastal climate.
Frequently Answered Questions
How much does it cost to build a custom home in Florence, Oregon?
Building a custom home in Florence typically costs between $275 and $450+ per square foot, depending on design, finishes, site conditions, and lot prep; oceanfront, dune, and view lots often run higher due to foundation, drainage, and corrosion-resistant material requirements. A fixed-bid estimate from Kempf Construction gives you an exact price before construction begins.
Do I need a permit to build an ADU in Florence?
Yes. ADUs in Florence require permits through the City of Florence and must comply with Oregon’s statewide ADU rules covering size, setbacks, and parking. As a licensed contractor, we handle the entire permitting process for you.
Do you build homes that hold up to the Oregon Coast's salt air and weather?
Yes. Coastal construction is one of our specialties. We use corrosion-resistant fasteners and materials, weather-tight detailing, and proper drainage to protect against salt air, wind-driven rain, and high humidity, so your home stands up to the coastal climate for decades.
What's the difference between a general contractor and a home builder?
A general contractor manages and coordinates all aspects of a construction project — permits, subcontractors, scheduling, and inspections — for remodels, additions, and new builds alike, while “home builder” usually refers specifically to new-home construction. Kempf Construction does both.
Can you build a vacation-rental ADU in Florence?
Absolutely. With Florence’s strong tourism economy, a well-built ADU can generate meaningful short-term rental income while adding long-term value. We handle design, permitting, and construction start to finish.
