Move From Property Survey to Design Review, Building Permit, Inspection and Final Closeout
Lake Forest permits involve more than building-code review. An addition, deck, fence, demolition, exterior alteration or new home may also require a stamped survey, grading review, tree permit, Building Review Board approval or Historic Preservation Commission approval.
This guide shows which route comes first, what the City expects in a complete application, how to use BS&A Online and how to avoid an expired permit or an open record that delays a future property sale.
What Do You Need to Do?
Lake Forest Permit Route Finder
Select the closest project to see the most useful first step.
Lake Forest Community Development Contacts
Match the Project to the Correct Lake Forest Permit Package
Project |
Start with |
Prepare first |
Extra Lake Forest check |
|---|---|---|---|
Interior remodel |
Addition / alteration permit |
Scope, plans, valuation and trade information |
Architect stamp if structural changes are proposed |
Addition, garage or structural alteration |
Addition / alteration packet |
Stamped survey, scaled drawings, grading waiver or permit and building-scale information |
Building Review Board or Historic Preservation review |
New single-family home or duplex |
New dwelling packet |
Engineer-stamped grading plan, architect-stamped plans, Manual J/S and utility approvals |
Design board, building scale, tree removal and North Shore Water Reclamation approval |
Deck |
Deck permit |
Stamped survey, dimensions, property-line distances, framing, piers and beam details |
HOA approval and grading waiver |
Fence, wall or pillars |
Fence / wall permit |
Legal survey showing structures, easements and proposed location |
Wall section, foundation and electrical permit if lighting is added |
Patio, driveway or hardscape |
Hardscape / driveway packet |
Survey, dimensions, material, drainage and grading information |
Ravine, steep-slope, drainage, tree and curb-crossing review |
Windows, doors, siding or tuckpointing |
Exterior-material permit |
Existing and proposed materials, sizes, grille patterns and product details |
Design or historic compatibility review |
Pool, spa or hot tub |
Pool / spa permit |
Plot plan, engineering, equipment, piping, barrier and trade plans |
Zoning, grading, tree and electrical review |
Generator, HVAC, solar or exterior lighting |
Project-specific packet |
Equipment specifications, site location, load calculations and trade license |
Noise, setbacks, screening and design compatibility |
Demolition |
Demolition application |
Existing structure information, survey, utilities and replacement-project details |
Building Review Board or Historic Preservation Commission approval |
Apply Through BS&A Online in Seven Clear Steps
Choose the exact City checklist
Do not begin with a blank generic application. Open the packet for the specific project: addition, deck, fence, pool, driveway, solar, HVAC or new building.
Confirm design, historic and zoning review
Exterior changes, demolition, additions and new buildings may need a board or commission decision before permit issuance.
Prepare the survey and plans
Show proposed work, setbacks, structures, utilities and easements. Structural changes generally require Illinois-registered design-professional plans.
Register or sign in to BS&A
Open the Lake Forest municipal portal, register an account and choose Apply for a Permit.
Upload one complete package
Include the signed owner application, plans, survey, contractor information, HOA approval and any board Action Summary or Certificate of Appropriateness.
Pay the plan-review charge
Plan-review charges are collected at application. The remaining permit charges are paid before issuance.
Respond to corrections and confirm issuance
Upload coordinated revisions, answer every comment and confirm the permit is issued before construction begins.
What a Complete Lake Forest Permit Package May Include
Owner and property
- Project address
- Owner of record
- Property-owner signature
- Owner’s Designee Form if used
- HOA approval when required
- Fair market construction value
Survey and design
- Current stamped plat of survey
- Setbacks and easements
- Proposed work location
- Detailed scaled plans
- Architect or engineer stamp
- Building-scale workbook if triggered
Contractors and approvals
- Electrician’s license
- HVAC contractor license
- Illinois roofing license
- Plumber’s license and letter
- Board Action Summary or COA
- Tree-removal application
Project-Specific Information Reviewers Look For
Project |
Important drawing or document details |
Common missing item |
|---|---|---|
Addition or alteration |
Materials, structural changes, survey, Manual J/S when new HVAC is included |
Board decision, grading waiver or trade-license information missing |
New home |
Engineer-stamped grading plan at 1 inch = 20 feet, architect plans and building-scale worksheet |
Water-reclamation approval, tree application or contractor credentials missing |
Deck |
Overall dimensions, property-line distances, material, pier/post spacing and beam sizing |
Stamped survey or grading waiver missing |
Fence or wall |
Property lines, easements, height, material, foundation and pillar section |
Electrical permit and fixture cut sheets omitted when lighting is proposed |
Roof |
Roofing squares, existing and proposed material, tear-off and hot-work information |
Illinois roofing license not current |
Windows or doors |
Existing/proposed materials, quantity, size changes, cladding and grille pattern |
Historic or design compatibility not resolved |
Building Review Board or Historic Preservation Commission?
Building Review Board
Use this route for applicable properties outside the City’s historic districts.
- Complete or partial demolition
- New buildings
- Additions and exterior alterations
- Building-scale variances
- Exterior lighting
- Signs, landscaping and new-development site plans
Meeting pattern: First Wednesday at 6:30 PM, subject to the current calendar.
Contact: 847-810-3520
Historic Preservation Commission
Use this route for projects inside a local historic district or affecting an individual landmark.
- Complete or partial demolition
- New construction
- Additions and exterior alterations
- Building-scale variances
- Architectural compatibility
- Certificate of Appropriateness requirements
Meeting pattern: Fourth Wednesday at 6:30 PM, subject to the current calendar.
Contact: 847-810-3520
Tree, Drainage, Grading, Ravine and Steep-Slope Checks
Tree removal
Complete the questionnaire on the City application to determine whether a permit is required.
Submit the application with a plat of survey showing each tree proposed for removal.
Published target: Generally five business days.
Grading and drainage
Additions, decks, patios, driveways, hardscape and new construction may need a grading waiver or full grading permit.
Show how the work affects runoff, neighboring property and existing drainage paths.
Ravines and steep slopes
Lake Forest Community Development coordinates with Engineering on grading, drainage and steep-slope conditions.
Contact staff before excavating, changing drainage or placing structures near a ravine or bluff.
Building Codes Used by Lake Forest
Subject |
Adopted code listed by the City |
Contact |
|---|---|---|
One- and two-family residential |
2021 International Residential Code |
Residential Plans: 847-810-3513 |
Commercial construction |
2021 International Building Code |
Commercial Plans: 847-810-3514 |
Mechanical and fuel gas |
2021 IMC and 2021 IFGC |
Community Development |
Electrical |
2020 National Electrical Code |
Community Development |
Plumbing |
Illinois State Plumbing Code |
Community Development |
Fire and life safety |
2021 NFPA 1 and NFPA 101; listed 2019 alarm and sprinkler standards |
Fire Prevention / Community Development |
Local amendments in Chapter 150 of the Lake Forest Code also apply.
How Long Does Permit Review Take?
Smaller projects
The City says smaller projects may be reviewed over the counter or in approximately five business days, depending on scope and required reviews.
Larger projects
The City publishes an approximate 15-business-day review target for larger projects.
How to Get the Correct Lake Forest Permit Cost
Fee sequence
- Enter the complete fair-market construction value.
- Pay the plan-review charge at application.
- Complete building and trade reviews.
- Review the itemized BS&A invoice.
- Pay the remaining permit, connection, impact or bond amounts before issuance.
Payment methods
The City lists cash, check and credit-card payment.
Credit-card fee: 2.95%.
Never pay by wire transfer. Verify that a legitimate electronic invoice came from bsa@cityoflakeforest.com.
Schedule and Prepare for Lake Forest Inspections
Before scheduling
- Permit is issued and active
- Correct inspection type identified
- Required work is complete
- Work remains visible
- Safe access is available
- Contractor contact is current
Before the inspector arrives
- Permit placard visible from street
- Approved plans on site
- Gate and work area unlocked
- Prior inspections passed
- Site and street kept clean
- Tree and erosion fencing remains
Prevent an Expired or Open Permit From Following the Property
Start within 90 days
Lake Forest says permitted projects must begin within 90 days after permit issuance.
12- or 18-month validity
The City says permits are valid for 12 or 18 months depending on project scope.
Limited extension
An extension may be available for an added fee when reasonable progress is being made. Request it before expiration.
Final closeout checklist
- All required inspections requested
- Failed items corrected
- Trade finals completed
- Final building inspection passed
- Certificate of Occupancy obtained when required
- Permit record shows complete
- Bond-refund conditions satisfied
- Final documents saved by owner
Lake Forest Construction Hours
Monday through Friday
7:00 AM–8:00 PM
Saturday and Sunday
8:00 AM–6:00 PM
Home Sewer Inspection Before Transferring Water Billing
Who needs it?
The program applies to single-family residences and duplexes before water billing is transferred from seller to buyer.
- Apply to Community Development
- Inspection fee: $150
- Complete up to 120 days before transfer
- City schedules within approximately 10 working days
- Inspection takes about one hour
What the City checks
The inspector looks for improper stormwater connections to the sanitary sewer.
- Downspouts
- Sump pumps
- Yard drains
- Other possible stormwater connections
- Dye testing when needed
Reinspection after violations: $50.
What Common Permit Statuses Mean
What to Say When You Contact Lake Forest
“I am planning [exact work] at [address]. Can you confirm the correct permit packet, required survey or grading information, design-board review and inspections?”
“The property is [inside/outside/not sure] a historic district. The project changes [demolition, addition, exterior material, scale or lighting]. Which commission or board must review it first?”
“Permit [number] has comments from [reviewer]. I uploaded a numbered response and coordinated revised set. Can you confirm the resubmission is complete?”
“Permit [number] at [address] remains open. Which inspection, document, bond condition or certificate is still required to close the record?”
Lake Forest Permit Completion Checklist
- Correct permit packet selected
- Current survey prepared
- Zoning and setbacks checked
- Design or historic approval completed
- Tree and grading review completed
- Contractor licenses current
- Permit formally issued
- Permit placard posted
- Approved plans kept on site
- Inspections scheduled at correct stages
- Final inspection passed
- Permit, certificate and bond closed
Lake Forest Community Development Map
Open the Correct Lake Forest Permit Resource
Lake Forest Building Permit FAQs
Where is the Lake Forest building-permit office?
Building permits are handled by Community Development at the Municipal Services Center, 800 N. Field Drive, Lake Forest, IL 60045—not at the City Hall address shown in the general website footer.
Where do I apply for a Lake Forest permit?
Use the City of Lake Forest BS&A Online portal. Register or sign in, choose Apply for a Permit and upload the signed project application and required construction documents.
How long does Lake Forest permit review take?
The City publishes an approximate five-business-day target for smaller projects and approximately 15 business days for larger projects. Incomplete documents or additional board, historic, engineering or Fire reviews can extend the process.
Does my project need Building Review Board approval?
It may if the property is outside a historic district and the project includes demolition, new construction, an addition, exterior alteration, building-scale variance, exterior lighting, signage, landscaping or a new-development site plan.
When is Historic Preservation Commission review required?
Commission review may apply when the property is inside a local historic district or is an individual landmark and the work includes demolition, new construction, additions, exterior alterations or a building-scale variance.
How do I schedule a Lake Forest inspection?
Sign in to BS&A, choose Schedule an Inspection, select the permit, choose the inspection type and available date, verify the contact information, add access notes and submit the request.
What must be at the job site for inspection?
Post the permit placard where it is visible from the street and keep the approved plans available electronically or in hard copy. The work must remain visible and safely accessible.
How long is a Lake Forest building permit valid?
The City says permits are valid for 12 or 18 months depending on scope, and work must begin within 90 days after issuance. Contact Community Development before expiration when an extension may be needed.
Can a homeowner apply without a general contractor?
The City application requires the property owner’s signature or an authorized designee form. Applicable plumbing, electrical, HVAC and roofing credentials are still required. Confirm the owner’s role with permit staff before submitting.
Is a home sewer inspection required before selling?
It is required before transferring water billing for a single-family residence or duplex. The published inspection fee is $150, and the inspection may be completed up to 120 days before the transfer.
Source and Update Notes
Building-Department.org is an independent informational guide and is not the City of Lake Forest. Permit applications, fees, inspections, design decisions and enforcement must be handled through the City or its authorized portal.
This page was rebuilt using current City Community Development pages, BS&A services, 2026 board and commission information, permit checklists, code information, inspection guidance, home sewer inspection rules and the May 2026 payment-scam alert.
Last reviewed: July 22, 2026.
Staff, forms, fees, meeting dates, code editions and procedures can change. Confirm time-sensitive details before filing, paying or beginning work.
Khushboo Bobade is a public records researcher and editorial writer specializing in government service documentation and construction permit systems.
Her research focuses on explaining building permits, inspection procedures, zoning regulations, and public permit records maintained by local government building departments across the United States.
Professional profile: View LinkedIn Profile
Check Permit Type, Estimate Fees, Prepare Inspections and Find Official Building Department Links
Use this free tool before applying for a building permit, booking an inspection, checking zoning rules, or searching permit records. It helps homeowners, contractors, landlords, buyers, and business owners understand the next step before visiting the official building department portal.
What building department task do you need help with?
Choose your goal. The tool will suggest the right next step, what to prepare, and which official page to check.
Before starting work, check whether your project needs building, zoning, electrical, plumbing, mechanical, right-of-way, or HOA approval.
Many portals require contractor registration, license details, insurance, plans, owner authorization, and inspection scheduling access.
Building Permit Type Finder
Select the project type to understand which permits or reviews are commonly required. Always confirm with the official local building department.
Permit Fee Estimate Calculator
Estimate a rough permit fee using project value and common percentage-based review assumptions. Local minimum fees, technology fees, impact fees, reinspection fees, and trade fees can change the final amount.
Inspection Readiness Checklist
Use this before scheduling framing, electrical, plumbing, mechanical, roofing, final, or certificate-related inspections.
Zoning and Setback Pre-check
Use this before applying for a permit when your project may affect land use, setbacks, lot coverage, height, parking, signs, fences, accessory structures, or business use.
Plan Review Timeline Estimator
Estimate how complex your review may be. Local staffing, incomplete plans, corrections, holidays, fire review, zoning review, and outside agency review can change timing.
Permit Records Search Helper
Use this if you are trying to find old permits, inspection history, certificate of occupancy details, open permits, or code-related records.
Official Building Department Resource Finder
Enter city/county and state to create safe searches for official permit portals, inspection scheduling, building codes, zoning maps, forms, fees, and contact pages.
Building Department vs Planning/Zoning
- Building Department: permits, plan review, inspections, code compliance, certificates.
- Planning/Zoning: land use, setbacks, height, lot coverage, signs, parking, variances.
Best sitewide placement
Place this tool after the first main guide section or before FAQs. It turns a normal article into a practical permit-preparation page.
Important note
This tool gives educational guidance only. Final permit requirements, fees, inspections, forms, and deadlines must be confirmed with the official local building department.