Start With the Design and Permitting Package
Most post frame builds stall in the same place: nobody has priced your exact building, on your exact lot, with your county's rules. This package does that work first, so the number you sign is real.
Your lot run against zoning and setback rules before you spend on a full design.
Building placement, access, and clearances worked out for your property.
Size, layout, doors, and finishes locked on a design sheet you approve.
Engineered drawings stamped for your build, ready for the county.
Drawings, checklist, and application prep, so filing is not a second project.
$2,500 flat. Credited in full toward your 40% first draw.
This is not an extra charge. It is the deposit you were going to pay anyway, applied to your build. It is nonrefundable if you do not move forward.
The package covers design, plan review, and permit application prep. It does not include county permit fees, plan review fees, or the post frame build itself. Change orders are extra.
WB Exterior Solutions | St. Peters, MO. The fit check is a planning aid based on your jurisdiction's published rules, not a permit guarantee; your packet includes the parcel verification checklist for your specific lot.
Built to Spec
The Lineup
Shell pricing includes the engineered building package, stamped Missouri plans, and erection. Concrete, doors, insulation, and interior finish are separate add-ons below, priced in the open.
Advertised at $58 per sq ft for the shell. That is a real number, not a teaser: it carries our full margin after overhead.
24 x 32
24x32 Shop
The backyard shop: detached garage space, hobby room, and toy and tool storage with room to spare.
40/40/20 terms. First draw $17,800.
- Engineered building package
- Steel roofing and siding
- Erection included
STAMPED PLAN SET
30x40 Shop
The all-around shop: vehicles and equipment inside, with a real work bay left over. The elevations above are from the actual stamped plan set.
40/40/20 terms. First draw $27,960.
- Engineered building package
- Steel roofing and siding
- Erection included
40 x 60
40x60 Shop
The working building: farm and fleet storage, equipment under roof, and room to run a business out of.
40/40/20 terms. First draw $43,960.
- Engineered building package
- Steel roofing and siding
- Erection included
Post-Frame Buildings, Priced Before We Ever Step on Your Land
Shop and barndominium shells engineered for Missouri, priced from satellite measurements of your property, with a guaranteed fixed-price proposal before you commit to anything beyond a reservation.
Price My Building Reserve a 2026 Build Slot
WB Contracting LLC dba WB Exterior Solutions, St. Peters, MO. Serving St. Charles County, West County, Greater St. Louis, and the 573 region.
What the Shell Price Includes, and What It Does Not
Includes
- Engineered building package
- Stamped Missouri plans
- Steel roof and wall panels
- Erection labor
- 1-year workmanship warranty
Does Not Include
Priced as add-ons, in the open:
- Concrete slab
- Overhead doors
- Insulation
- Interior liner
- Gutters
- Site prep and permits beyond the stamped plans
No kit-drop-and-disappear. One company answers for engineering, erection, and warranty.
Add-Ons, Priced in the Open
- Overhead door pair (12x12 + 10x10), installed: $11,300 (12x12 only $6,725 / 10x10 only $4,575)
- Concrete slab 4 in: $11.75 per sq ft
- Concrete slab 6 in: $14.50 per sq ft
- Insulation package: $8.10 per sq ft
- Interior metal liner: $13.00 per sq ft
- 6 in commercial gutters: $17.00 per LF of eave
- Jackshaft opener: $2,250 each
- 26-gauge steel upgrade: $2.65 per sq ft
How It Works
- Price it from your couch. The online estimator measures your property by satellite and prices your shell and add-ons in about two minutes.
- Reserve your slot. A $2,500 reservation deposit secures your production slot and your stamped Missouri engineering plans. It is credited in full toward your first contract draw.
- Build on 40/40/20. 40% at contract, 40% at material drop, 20% at completion. Contract draws are billed by ACH invoice. No five-figure card swipes, no surprises.
Financing Without the Dealer Fees
Soft-pull pre-qualification through Acorn Finance. Checking your rate does not affect your credit, and there are no dealer fees baked into your price.
A $69,900 building works out to about $1,482/mo (example: 60 mo at 9.9% APR, subject to approval).
Why WB
- Guaranteed fixed-price proposal after an on-site core audit. The satellite number gets verified in person before you sign.
- 1-year workmanship warranty included.
- Local crew accountability: one company answers for engineering, erection, and warranty. No kit-drop-and-disappear.
Where We Build
If you have the land, we will price the building. The estimator measures any property by satellite, so your quote starts accurate wherever you are.
- St. Charles County (St. Peters, St. Charles, O'Fallon, Wentzville, Cottleville)
- West County (Chesterfield, Wildwood, Ballwin, Ellisville, Eureka)
- Greater St. Louis
- The 573 region
We also build post frame buildings in Lincoln County, Missouri and Warren County, Missouri.
Straight Answers
Is concrete included in the shell price?
No, and we would rather tell you that up front. Slabs are priced per square foot as an add-on, 4 in at $11.75 and 6 in at $14.50, so you see exactly what the concrete costs.
What does the $2,500 reservation actually buy?
Your production slot on the 2026 calendar and your stamped Missouri engineering plans. It credits in full toward the 40% first draw when you sign. It is not an extra fee.
Can I finance it?
Yes. Soft-pull pre-qualification through Acorn Finance; checking your rate does not affect your credit.
How long until my building is up?
Engineering and kit lead times run several weeks, which is exactly why slots are reserved in order. Your slot position sets your place in line; your proposal confirms the schedule before you sign.
2026 Price Guide
Your Land Is Ready When You Are
Price the building tonight, reserve the slot this week.
Price My Building Reserve a Build Slot
Call or text (636) 874-8808.
Price Your Building Now
Pick your building, add your options, get your number. Two minutes, no phone call required.
WB Exterior Solutions Proposal & Scope Audit
Real-time satellite analysis, exact fixed rates, and instant proposal generation.
Post Frame Tax Timing Worksheet
How you classify the building, and the year it is placed in service, can move your first-year deduction from a small slice to the full contract price. Run your numbers, then confirm with your CPA.
Standard path: 39-year straight line
Straight-line over 39 years. Half-year convention ignored, so year one is approximate.
Accelerated path: Section 179 (agricultural use)
Subject to business income limits, annual dollar caps, and placed-in-service rules. The deduction cannot exceed your business taxable income for the year.
Estimate only, not tax advice. Eligibility depends on how the building is used and when it is placed in service. Confirm with your CPA before December 31.
For extra protection, explore our storm shelters and bunkers for your home or building.
Frequently Asked Questions
How much does a 30x40 post frame shop cost?
The 30x40x12 shop shell is $69,900. That is the erected shell: WB sells shells only, and concrete, insulation, and interior finish work are separate add-on steps priced below. A fully loaded 30x40 with a 4-inch slab, the door package, and the standard add-ons prices at $127,450 on the published schedule. Payment terms on post frame are 40% deposit, 40% at material drop, and 20% on completion.
What do the other shell sizes cost?
The 24x32 Hobby Garage shell is $44,500 and the 40x60x14 Equipment Building shell is $109,900. All three shells are priced off WB's verified build costs, and every shell quote is confirmed on your site scope (access, grade, and door layout) before a contract is signed.
What do post frame add-ons cost?
Published add-on rates: 4-inch concrete slab $11.75 per sq ft, 6-inch slab $14.50 per sq ft, insulation package $8.10 per sq ft, interior metal liner $13.00 per sq ft, 26-gauge metal upgrade $2.65 per sq ft, 6-inch commercial gutters $17.00 per LF of eave, and a jackshaft opener at $2,250 each. The overhead door package is $11,300 for a pair, or $6,725 for a 12x12 only and $4,575 for a 10x10 only.
Does WB build barndominium living space?
No. WB builds post frame shells: the storage and shop starting point. Concrete, insulation, and interior buildout are separate steps after the shell, and WB does not sell living-space finishes or barndominium buildouts.
How do I reserve a build slot?
Build slots are reserved on WB's reserve page, which is linked from this page. The shell contract itself runs 40% deposit, 40% at material drop, and 20% on completion, and your slot is scheduled once the reservation and deposit steps are complete.