Building permits in unincorporated Lexington County — the Lake Murray county that forms the western half of the Columbia metro — are issued by the Community Development Department (Building Inspections and Safety Division), with applications and inspections through the BluePrince portal.
This Lexington County building permit guide covers what requires a permit, how fees work, the BluePrince process, trade permits, and inspections — so your Lexington County project starts clean.
Lexington County issues permits for unincorporated areas only. The Town of Lexington, West Columbia, Cayce, and other municipalities run their own permitting. The Land Development Division oversees land-disturbance review, floodplain management, and water-quality programs, so projects that disturb land carry an additional review track.
What requires a building permit in Lexington County?
Under the South Carolina building codes (the International Codes as adopted with South Carolina modifications by the South Carolina Building Codes Council, then locally administered and enforced), a permit is required before you construct, enlarge, alter, repair, move, demolish, or change the occupancy of most structures and systems. Common triggers include:
Permit required
- New construction, additions, and renovations
- Structural / load-bearing alterations and demolition
- Reroofing, windows, doors, and exterior changes
- Electrical service changes and most wiring alterations
- Mechanical / HVAC installations and changeouts
- Plumbing alterations, repipes, and water heaters
- Decks, pools, accessory structures, and signs
- Change of occupancy or use
Typically exempt
- Painting, flooring, cabinetry, and cosmetic work
- One-story detached storage accessory to a dwelling, 200 sq ft or less (home already on the lot)
- Window awnings supported by an exterior wall
- Like-for-like fixture/device swaps by a licensed contractor
Exemptions are narrow and scope-specific. When unsure, confirm with the building department before starting — see the penalty note below.
Get the permit issued before starting work. Building without one exposes the owner to penalties and stop-work orders. Note that exemption from a building permit does not exempt a project from zoning and planning requirements — confirm edge cases with the Building Inspection Office.
Who handles permitting in Lexington County?
Permitting, plan review, and inspections run through the Community Development Department: the Building Inspections and Safety Division handles building permits and inspections, Development Services handles zoning permits, and the Land Development Division handles land-disturbance permits, floodplain management, and water quality.
| Detail | Information |
|---|---|
| Office | County Administration Building, 212 South Lake Drive, Suite 401, Lexington, SC 29072 (4th Floor) |
| Phone | (803) 785-8130; BuildingInspections@lexingtoncounty.sc.gov |
| Online portal | BluePrince Building Permits Portal (apply, pay, schedule inspections) |
| Covers | Unincorporated Lexington County (municipalities run their own) |
| Inspection cutoff | 4:00 p.m. Monday–Friday for next-day inspections |
| Enforced code | South Carolina building codes |
Apply through the BluePrince portal. Create the project in BluePrince, upload plans, and submit; building permit applications must be accompanied by plans and zoning review where applicable, plus a Construction Documents Affidavit. Subcontractors file under the master permit. Schedule inspections in the portal — the next-day inspection cutoff is 4:00 p.m. Monday through Friday.
Lexington County building permit cost
Lexington County building permit fees are set by the county fee schedule and based on the type and valuation of work, with separate trade permit fees; an updated Development Review/Permit and Construction Plan Review/Inspection fee schedule took effect July 1.
Land-disturbance projects route through the Land Development Division with floodplain and water-quality review. Confirm current amounts before budgeting.
| Fee component | How it works |
|---|---|
| Building permit fee | Per county fee schedule (type & valuation) |
| Trade permits (E / P / M) | Charged separately per trade |
| Land disturbance | Land Development Division review |
| Plan review / inspection | Updated fee schedule effective July 1 |
| Certificate of Occupancy | Required for new occupancy or change of use |
| Work-without-permit | Penalties and possible stop-work orders |
Want a precise number for a specific Lexington County project? Send us the scope and valuation and we'll return a fee estimate alongside a filing timeline.
Lexington County trade permits
Electrical, plumbing, and mechanical work needs its own permit and a South Carolina-licensed contractor, each filed under the master permit in BluePrince.
Electrical permits
Required for service upgrades, panels, solar PV, and most wiring, performed by a SC-licensed electrical contractor.
Plumbing permits
Required for new plumbing, repipes, water heaters, fixtures, and gas piping, performed by a SC-licensed plumbing contractor.
Mechanical (HVAC) permits
Required for HVAC changeouts, ductwork, and refrigeration, performed by a SC-licensed mechanical contractor. Specialized systems are permitted and inspected separately.
Miscellaneous & specialty
Reroofs, decks, pools, accessory structures, and signs are permitted separately. Land-disturbance work routes through the Land Development Division (floodplain and water quality), and landscape permits are issued through Community Development.
Verify your contractor's license. South Carolina licenses commercial general and mechanical contractors through the SC Contractor's Licensing Board, and residential builders, residential specialty contractors, and home inspectors through the SC Residential Builders Commission — both under the SC Department of Labor, Licensing and Regulation (LLR). A license is generally required once the value of the work exceeds $5,000 (S.C. Code 40-11-260 for commercial/mechanical; the Residential Home Builders Act for residential). Verify before signing; the property owner is responsible for ensuring a permit is obtained.
How to get a building permit in Lexington County
Confirm jurisdiction & create the project
Confirm the parcel is unincorporated and create the project in the BluePrince portal.
Prepare your documents
Assemble the application, stamped plans, Construction Documents Affidavit, and SC license documentation; add a land-disturbance package if applicable.
Submit in BluePrince
Upload plans and submit; subcontractors file under the master permit.
Plan review & corrections
Building Inspections & Safety (with Land Development where applicable) reviews; resolve comments and resubmit.
Pay fees & pull the permit
Pay the calculated fees, then post the permit on site.
Schedule inspections through close-out
Schedule inspections in BluePrince (4:00 p.m. cutoff for next day). Clear all required inspections to obtain your Certificate of Occupancy.
Inspections in Lexington County
Schedule inspections through the BluePrince portal; the next-day inspection cutoff is 4:00 p.m. Monday through Friday. Typical checkpoints include footing/foundation, rough-in MEP, framing, insulation, and final. Post the permit and approved plans on site.
Address correction notices before requesting a re-inspection; a final inspection and Certificate of Occupancy are required before legal occupancy or use.
Official Lexington County permitting resources
- 🏛️ Lexington County Community Development
- 💻 Building permits & BluePrince portal
- 📋 Forms, affidavits & submittal requirements
- 🪪 SC Contractor's Licensing Board (LLR)
- 📘 SC Building Codes Council
- 🗺️ Land Development & floodplain
Simplify Lexington County permitting with Alliance Permitting
Lexington County's BluePrince workflow, land-development track, and 4 p.m. inspection cutoff reward applicants who assemble complete packages and order the steps correctly. Alliance Permitting is a permit expediter for Lexington County — our permit expediting services pair AI-driven document review with experts who know the Community Development and BluePrince process, so your Lexington County submissions move faster.
Trusted by leading builders and brands — including Dream Finders Homes, Tesla, Verizon, Hyatt, and Sunnova.
Contractors and builders choose Alliance for Lexington County because we deliver:
- Local expertise — we know Lexington County Community Development, the BluePrince portal, and the land-development review.
- Complete oversight — track every permit and inspection across all your jobs in one place.
- Error-free submissions — AI pre-checks plus expert review catch issues before they become correction cycles.
Alliance Permitting is a permit documentation and submission company: we prepare your paperwork, file it correctly, and coordinate with the building department through issuance — including preparing private-provider documentation where that option is available. We are not a contractor and do not perform licensed plan review or inspections; that work stays with your team and the jurisdiction.
Ready to break ground in Lexington County sooner?
Let Alliance prepare, file, and track your unincorporated Lexington County permits while you stay focused on building. Get a free, no-obligation quote today.
More South Carolina permitting guides
This guide is provided by Alliance Permitting for general informational purposes and reflects publicly available information believed accurate as of June 2026. Permit requirements, fees, and processes change; always confirm current details with the Lexington County Community Development Department before filing. This is not legal advice.