Pole Barn Contractor Lewiston ID
#1 Pole Barn Repairs, Additions, and Modifications Lewiston Idaho Area - 5-Star Rated
Trusted Lewiston Idaho pole barn repairs, additions, and post frame building modifciatons in Latah County. Contact us for 5-Star repair work, replacing windows, doors, siding or pole barn roofs.
New Pole Barn Lewiston
Pole barns, additions, and shops built right: engineered post frame, proper footings and concrete, with doors, insulation, electrical, and finishes tailored to you. We build for Lewiston ID snow loads, we deliver on time - giving you flexible well-built space.
Pole Barn Repairs
5-Star Pole barn repairs Latah County: straighten posts, fix trusses, storm damage, sagging roofs, rotten posts - find and solve leaks before they spread. We bring everything back to engineered strength and leave you with a solid, safe, well built building.
Modifications & Additions
Expand your Lewiston pole barn with new bays, taller walls, upgraded doors & windows, or interior buildouts that match how you use the space. We handle structural changes, code checks, insulation, utilities, and finishes to keep it strong and safe!
Pole barns are versatile, cost-effective structures ideal for storage, workshops, garages, agricultural use, or even custom homes in Lewiston ID. They can be built with open sides for equipment access, fully enclosed for weather protection, or customized with insulation, concrete floors, and living space features.
Custom Pole Buildings Modifications and Additions in Lewiston
At General Construction Services Inc., we build high-quality pole barns designed to handle Idaho’s climate and last for decades. Whether you need a shop, garage, equipment barn, or backyard structure, we deliver reliable framing, clean finishes, and straightforward service from start to finish.
We offer full shell packages or framing-only builds based on your goals and budget.
Why Choose a Pole Barn?
Pole barns offer fast, flexible, and cost-effective square footage for all types of property owners. With fewer foundation requirements and easy customization, they’re ideal for:
- Garages and storage buildings
- Workshops and hobby spaces
- RV and boat shelters
- Agricultural barns and equipment sheds
- Multi-use outbuildings
Pole Barn Design and Construction Process
Every pole barn we build starts with a clear design and ends with lasting results. We begin each project by creating a custom CAD drawing tailored to your property and goals.
From building layout to door placement, we work with you to finalize the design before construction begins — ensuring your structure is functional, code-compliant, and built exactly the way you want it.
We use durable materials and sound construction practices to deliver clean, strong structures that hold up to snow, wind, and time.
Solid – Long-Lasting Pole Barn Framing
We build with laminated posts for a stronger, straighter frame that won’t twist or bow like solid sawn lumber. Engineered trusses, quality fasteners, and properly spaced girts and purlins complete the structural package.
Metal Roofing and Siding
All of our pole barns are finished with durable metal roofing and siding, available in a wide range of colors. Metal offers excellent weather resistance, low maintenance, and a clean, uniform look that holds up for decades.
We install all roofing and siding with matching trim, closure strips, ridge caps, and proper flashing to ensure long-term performance.
Pole Barn Windows and Doors
We install all man doors, garage doors, and windows as part of your pole barn build. Whether it’s a standard entry door, an insulated overhead garage door, or multiple vinyl windows for natural light, we handle the full installation with clean framing and weather-sealed finishes.
Optional Pole Barn Features
Additional features such as lean-tos, overhangs, partition walls, and concrete slabs can be included upon request to meet the specific needs of your project.
Every Pole Barn Build Done Right
From post layout to final trim, we focus on solid framing, clean details, and structural integrity. Your pole barn isn’t just another project — it’s a long-term asset on your property.
What You Can Expect from GCS:
- Straightforward, transparent estimates
- Organized scheduling and project oversight
- Crews that specialize in post-frame construction
- CAD-based design and layout support
- No sales pressure — just honest work and communication
Ready to get started?
"Fantastic experience! GCS was quick, clear, and professional, all while keeping the pricing reasonable. The process couldn’t have gone smoother."
- Alexander Hagel, 5-Star Google Review
Pole Barn Repairs, Options & Additions – Lewiston
Lewiston sits at the confluence of the Snake and Clearwater Rivers with US 12 and US 95 feeding in, and many older barns on the benches above the valley just need smart upgrades, not a full replacement. We handle repairs, lean-to additions, lofts or mezzanines, interior build-outs, door and window upgrades, and full insulation + concrete improvements – built for river weather, canyon winds, and hot summers between Lewiston, Clarkston, Lapwai, and the surrounding grade roads.
From re-sheeting metal to post and truss fixes, from horse stalls and tack rooms to workshop finishes with power and heat, we upgrade barns on the Lewiston Hill, along the Tammany Creek area, and out toward Webb Road and Lapwai Valley. If you want more covered space, better storage, or a tighter envelope that holds up above the rivers, we will design it, frame it, and finish it clean – code-compliant and tailored to your Lewiston property.
Pole Building Repairs (Fix it right, make it last)
Structural & Framing
- Sistering or repairing rotted or heaved posts, adding uplift anchors, straightening bowed walls on older barns up on the benches and grades
- Truss and purlin reinforcement, girt replacement, hardware upgrades for river canyon wind and snow events
Roof, Siding & Weatherproofing
- Leak tracing and repair, re screw and re seal metal panels, ridge cap and flashing replacement after Clearwater and Snake River storms
- Full or partial re-sheeting of metal siding or roofing with matching trim and closures
- Condensation control with ventilation, vapor barriers, and drip control upgrades for buildings near the rivers and in the valley bottom
Pole Building Openings & Access
- Overhead or roll up garage door replacement, high lift conversions, man door swaps for shops along US 12, US 95, and the Lewiston Grade
- Window replacement for light and ventilation, plus new framed openings where needed
Slab & Drainage
- Crack or settlement remediation, saw cut and repour sections, apron additions, trench drains for slopes and long drives above town
- Gutters and downspouts with site water management to keep interiors dry during heavy winter rain and snow melt
Storm or Snow Damage
- Post event inspections, snow load damage assessment, emergency dry in, and rebuild plans in and around the Lewiston Clarkston valley
Goal: bring the building back to square, dry, and tight – then make it better than before.
Popular Pole Building Additions (More space, more function)
Lean-tos & Overhangs
Open or enclosed lean-to additions for equipment and RVs parked off river grade roads, boat storage for rigs headed to Hells Canyon, or shaded work areas with views over the confluence. We match existing eave height and panel profile so the addition ties in clean.
Lofts & Mezzanines
Create lofted storage or a partial second level for seasonal gear, business inventory, or hay so the main bays stay clear. Ideal for smaller parcels on the valley floor where flat building space is at a premium.
Interior Build-Outs
- Horse barns and stables: stalls, aisle layout, tack rooms, wash bays, rubber matting
- Workshops: insulated walls and ceilings, 120 or 240V power, task lighting, compressor runs for trades and small businesses
- Garage + shop combos: partition walls, fire separation where required, clean storage for tools, toys, and boats
- Barndominium prep: interior framing, rough ins, envelope upgrades if you plan future living space with a river view
Door & Window Upgrades
Taller RV, boat, or trailer doors, drive through bays, added man doors, skylights, or extra windows to capture valley light and views.
Concrete & Floors
Slabs, thickened edges, footings, interior pads, drains, and aprons – poured to match how you use the building, whether that is a river grade shop, a Tammany acreage, or a small place nearer downtown. Concrete can be bundled with your Lewiston project.
Exterior Finishes
Metal siding and roofing in valley friendly colors is our standard. For a more finished look from US 12, US 95, or riverfront roads, we can add LP SmartSide or fiber cement wainscoting and trim – we skip vinyl.
Comfort & Protection
- Insulation with spray foam, batt, or hybrid systems, proper air sealing, and ventilation for both winter work and hot summer days
- Snow guards, gutters, and condensation control to keep interiors dry through rapid weather changes in the canyon
Use-Case Ideas (Mix & match to fit your property)
- Equipment and storage barns for tractors, side by sides, and farm gear on benches above the valley
- Multi bay garages for pickups, toy haulers, and boats used on the Snake and Clearwater
- Workshops with heat, power, and finished slabs for trades and service businesses
- Agricultural use – small livestock shelters, hay storage, and machine sheds in the Tammany and Lapwai areas
- Barndominiums or shouses with framed interiors and insulation ready shells
- RV or boat storage with taller clearances and reinforced slabs
- Commercial builds – small shop or warehouse style buildings near key highway corridors
- Lofted pole barns for built in attic storage
- Garage + apartment combos with ADU space above or beside the bays
- Insulated buildings with vapor barriers and finished interiors
- Custom roofing or siding colors, wainscoting, and trim packages
- Permitting and site prep – we help coordinate city, county, and highway access needs
Design + Process for Additions & Repairs in Lewiston, ID
- Site check and measurements on your valley floor, bench, or grade property
- CAD layout and scope for doors, lean tos, and interior partitions that respect slopes, drives, and turning radius
- Budget options with good, better, best paths
- Materials and color selections to match existing buildings and river canyon surroundings
- Schedule and build timed around weather and access on the grades
- Final walk through so everything is tuned before we leave
Everything is tuned for Snake and Clearwater valley weather and local code. Clean framing, engineered trusses, proper spacing, and matching trim – the same standards we use on new builds.
What are some common Pole Barn Questions We Hear from Lewiston property owners?
Can you add a lean-to or overhang to my existing pole barn?
Yes – lean-to additions are popular on Lewiston Hill acreages and valley floor properties that need more covered parking and equipment space without starting from scratch.
How do you fix rotted posts at the base?
We expose the area, sister or replace posts, add uplift anchors, and bring the wall back to plumb before closing with proper flashing and grade fixes for canyon soils.
Can you convert part of my pole barn into living space or a barndominium?
We can frame interiors, upgrade insulation and air sealing, and plan openings so you have a code aware path toward apartment, office, or shop space overlooking the valley.
Do you pour slabs and interior pads?
Yes – slabs, footings, and interior pads can be included so doors, drains, and equipment bases land right for your driveway and site grades.
Will this hold up to Lewiston winters and summer heat?
We design and retrofit for snow, wind, and temperature swings using engineered components, correct fasteners, closures, and ventilation based on local conditions.
Service Area (Local to You)
Lewiston, Clarkston, Asotin, Lapwai, Tammany, Sweetwater, and surrounding bench and grade areas along US 12 and US 95.
Get Started
- Get a Quote on a Lewiston Lean-to Addition
- Fix Leaks, Doors, or Siding on My Lewiston Pole Barn
- Add a Loft, Stalls, or Workshop Interior in Lewiston
- Design My Lewiston Pole Barn Upgrade
26+
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30+
Trust our 30+ years of successful roofing, siding, and local construction service.
New Roofs & Repairs
We're proficient in Tuff-Rib metal panel, Composite Shingle, and Snap-Lock Standing Seam roofing systems.
Home Siding Experts
We have decades of siding experience, it's one of our specialties, and we only use high-grade siding materials
48+ Pole Barns Built
We're the premier Pole Barn builders in Lewiston. Ask us about the many options of pole barn construction.
GCS - 100% Local
Proudly serving Latah County Idaho and the local communities in and near Deary, Genesee, Juliaetta, Kendrick, Lewiston, Moscow, Onaway, Potlatch, Potlatch Junction, and Troy.