The Quick Answer
Unlike most North Shore communities, Lake Forest operates two distinct review bodies: the Building Review Board (established 1962) for projects outside Historic Districts, and the Historic Preservation Commission for properties within the five Local Historic Districts. Both meet monthly, both require Illinois-licensed architect plans, and both apply the City's rigorous Residential Design Guidelines.
Critical Distinctions for Lake Forest Renovations
- Two separate review bodies: The Building Review Board reviews projects outside Historic Districts. The Historic Preservation Commission reviews projects within the five Local Historic Districts or affecting designated Landmarks.
- Illinois-licensed architect required: All plans must bear the stamp of a registered Illinois architect. Budget $15,000–$40,000 for architectural services on major renovations.
- Residential Design Guidelines govern everything: Lake Forest's comprehensive design guidelines address roof slopes, window proportions, materials, massing, landscaping, and site layout.
- Two-year approval expiration: Approvals expire if building permits aren't obtained within two years.
- Plan modifications require re-approval: It's unlawful to modify approved plans during construction without obtaining a waiver or new approval.
- Monthly meetings only: Both boards meet once monthly. Missing a submission deadline means waiting 4–6 weeks for the next meeting.
Lake Forest isn't just another affluent suburb. It's an architectural laboratory spanning 160 years, from Howard Van Doren Shaw estates to David Adler masterpieces to contemporary interpretations of classical forms. With median home values around $1.1 million and properties ranging to $6 million+, the City has maintained its character through some of the North Shore's most sophisticated oversight processes.
This creates a paradox for homeowners: the very protections that preserve Lake Forest's value also create complexity for renovation. Homeowners who understand the system navigate it successfully. Those who don't face costly redesigns, permit delays, and occasionally, denial.
□ Lake Forest By The Numbers
Median Home Value: $1,100,000+ (properties range to $6M+)
Population: ~19,350 residents
Housing Units: Approximately 6,900
Historic Districts: 5 Local Historic Districts + numerous individual Landmarks
Notable Architecture: Howard Van Doren Shaw, David Adler, Frost and Granger designs
Building Review Board vs. Historic Preservation Commission
The first question for any Lake Forest renovation: which board reviews your project? The answer depends entirely on location.
Building Review Board
Reviews projects outside Historic Districts and Landmark properties. Focuses on architectural design quality, neighborhood compatibility, building scale compliance, and the Residential Design Guidelines. Meets first Wednesday monthly at 6:30 PM.
Historic Preservation Commission
Reviews projects within the five Local Historic Districts or affecting individually designated Landmarks. Applies additional preservation standards including material compatibility, historic integrity, and character-defining features. Issues Certificates of Appropriateness.
What Each Board Reviews
| Project Type | Building Review Board | Historic Preservation Commission |
|---|---|---|
| Complete or partial demolition | Yes — all demolitions | Yes — in Historic Districts |
| New construction | Yes — architectural design review | Yes — compatibility review |
| Additions | Yes — scale and design review | Yes — historic compatibility |
| Exterior alterations | Significant alterations only | Most exterior changes |
| Building scale variances | Yes — recommends to City Council | Yes — recommends to City Council |
| Interior renovations | No review (permit only) | No review (unless Interior Landmark) |
⚠️ The Demolition Waiting Period
Lake Forest imposes a two-year waiting period for demolition permits unless the City Council approves a replacement building first. If you're planning to demolish and rebuild, your replacement design must be approved before demolition can proceed. This protects Lake Forest from "demolition by neglect" and empty lots.
Lake Forest's Five Historic Districts
Lake Forest contains five Local Historic Districts designated under the 1998 Historic Preservation Ordinance. Properties within these districts — and individual Landmarks throughout the City — require Historic Preservation Commission review for exterior work.
East Lake Forest Historic District
The crown jewel. Roughly bounded by Lake Forest Cemetery (north) to Ringwood Road (south), Central Business District (west) to Lake Michigan (east). Contains many of the City's most significant estates. National Register listed 1978.
Vine-Oakwood-Green Bay Road
Properties along Vine Avenue, Oakwood Avenue (south of Illinois Road), and east side of Green Bay Road between St. Mary's Church and Vine Avenue. Diverse architectural periods.
Green Bay Road Historic District
Properties along Green Bay Road corridor. Mix of residential and institutional architecture spanning multiple eras.
Meadowood Dairy Historic District
Former dairy farm converted to residential. Unique character distinct from Lake Forest's estate areas.
Grove School Historic District
Centered on the historic Grove School. Smaller district with distinct neighborhood character.
Individual Landmarks
Numerous individually designated Landmarks throughout Lake Forest also require HPC review. Check City records for your property's status before planning any exterior work.
Contributing vs. Non-Contributing Structures
Within Historic Districts, structures are classified as either Contributing (significant to the district's character) or Non-Contributing. Contributing Structures receive highest scrutiny — material changes, window replacements, and additions face careful review. Contact Community Development at (847) 810-3520 to determine your property's classification.
Lake Forest Residential Design Guidelines
Both boards apply the City of Lake Forest Residential Design Guidelines — a comprehensive document that governs everything from roof slopes to window proportions to landscaping.
Key Design Principles
- Simplicity of massing: "The root of nearly all traditional architectural massing is simplicity." Lake Forest values simple volumes over complicated forms.
- Roof slope consistency: Different roof types have different appropriate slopes, but similar roof types within a building should have consistent slopes.
- Neighborhood compatibility: "New construction within an established neighborhood needs to conform to the existing environment."
- Material quality: "Exterior materials should be of the highest quality. Imitation and synthetic substitutions should be avoided."
- Proportional elevations: Building scale calculations determine maximum allowable square footage.
- Landscape integration: "Landscaping plans should be consistent with the natural environment of the site."
What the Boards Actually Look For
- Balance of solid wall to window: Board members frequently comment on whether wall-to-window ratios feel appropriate
- Garage door design: Glass panels, placement, and prominence receive scrutiny
- Driveway screening: Parking areas should be screened to reduce visual intrusion
- Consistency of architectural style: Mixing incompatible styles draws criticism
- Landscape softening: Large wall areas become opportunities for landscaping
The Approval Process: Step by Step
Lake Forest Renovation Approval Timeline
Determine if property is in Historic District or designated Landmark. Obtain current survey. Review Residential Design Guidelines.
Engage Illinois-licensed architect experienced with Lake Forest approvals. Develop design that addresses Design Guidelines.
City staff can provide informal feedback before formal submission. Identifies potential issues early.
Submit complete BRB or HPC application packet via City's online portal. Include all required drawings, site plans, and material specifications.
City staff reviews application, prepares findings, and develops recommendation for board.
Present project to board. Answer questions. Hear any public testimony. Board deliberates and votes.
Submit permit application with approved plans. Plans must match exactly what board approved.
Total timeline: 8–16 weeks from architect engagement to building permit, assuming no continuances.
City of Lake Forest Community Development
Address: 220 E. Deerpath (City Hall, 2nd Floor)
Phone: (847) 810-3520
Building Permits: Submit via BS&A Online Portal
BRB Meetings: First Wednesday monthly, 6:30 PM
HPC Meetings: Varying schedule — check City website
Lake Forest Estate Renovation Costs
Lake Forest renovation costs run 15–30% higher than typical North Shore communities due to material quality expectations, architect requirements, and the design sophistication demanded by review boards.
| Project Type | Typical Range | Premium Range |
|---|---|---|
| Kitchen Renovation | $75,000–$125,000 | $150,000–$250,000 |
| Primary Suite Addition | $150,000–$250,000 | $275,000–$400,000 |
| Whole-Home Interior Renovation | $200,000–$350,000 | $400,000–$700,000+ |
| Historic Home Restoration | $250,000–$450,000 | $500,000–$1,000,000+ |
| Major Addition (1,000+ sq ft) | $300,000–$500,000 | $550,000–$800,000+ |
| Complete Tear-Down & Rebuild | $600,000–$1,200,000 | $1,500,000–$3,000,000+ |
Real Lake Forest Project: What Actually Happened
Historic District Kitchen & Addition
Total Investment: $285,000
Property: 1925 Tudor Revival in East Lake Forest Historic District, Contributing Structure
Scope: Comprehensive kitchen renovation (expand into former butler's pantry), new mudroom addition, updated rear facade with French doors, and reconfigured rear landscape.
The Challenge: As a Contributing Structure designed by a significant architect, every exterior modification required Historic Preservation Commission approval. The original rear elevation had distinctive casement windows that the Commission wanted preserved in spirit.
The Solution: Architect designed mudroom addition to appear as though it could have been original — matching the Tudor half-timbering, using reclaimed brick for foundation, and incorporating diamond-pane casements echoing the original windows.
Timeline: Design: 8 weeks | HPC review: 6 weeks | Permit: 3 weeks | Construction: 16 weeks | Total: 8 months
Outcome: HPC approved unanimously, praising the design's sensitivity to the original architecture. Estimated value added: $180,000–$220,000.
Selecting Contractors for Lake Forest Projects
Essential Contractor Qualifications
- Lake Forest experience: Ask specifically about Lake Forest projects. Understanding the board processes matters.
- Architect relationships: Should have established working relationships with Lake Forest-experienced architects.
- Historic restoration capability: For Historic District properties, experience with period-appropriate construction techniques is essential.
- Premium material sourcing: Ability to source and install the quality materials Lake Forest expects.
- Insurance: $2M+ liability coverage appropriate for $1M+ properties.
- References in Lake Forest: Actual Lake Forest homeowners you can contact.
⚠️ Red Flags for Lake Forest Projects
Walk away if they: Have never worked in Lake Forest. Suggest shortcuts on materials to save money. Are unfamiliar with the Residential Design Guidelines. Can't provide Lake Forest references. Underestimate approval timelines. Dismiss the importance of board processes.
Lake Forest Estate Renovation - FAQs
How much does an estate renovation cost in Lake Forest?
Lake Forest estate renovations typically range from $150,000 to $500,000+ depending on scope. Kitchen renovations run $75,000–$250,000. Primary suite additions cost $150,000–$400,000. Whole-home interior renovations range $200,000–$700,000+. Costs run 15–30% higher than typical North Shore communities due to material quality expectations and architect requirements.
What is the Building Review Board in Lake Forest?
The Building Review Board (BRB) was established in 1962 to preserve Lake Forest's architectural character. Seven Lake Forest residents appointed by the Mayor review projects outside Historic Districts including demolitions, new construction, additions, exterior alterations, and building scale variances. The board meets the first Wednesday of each month at 6:30 PM.
What is the Historic Preservation Commission?
The Historic Preservation Commission (HPC) was established in 1992 under Lake Forest's Historic Preservation Ordinance. Seven commissioners with preservation expertise review projects within the five Local Historic Districts and projects affecting individually designated Landmarks. The HPC issues Certificates of Appropriateness for demolitions, new construction, additions, and exterior alterations.
How long does Lake Forest renovation approval take?
Plan for 8–16 weeks from architect engagement to building permit for projects requiring board review. Both boards meet monthly — missing a submission deadline adds 4–6 weeks. Projects requiring variances, demolition approval, or significant revisions add 2–4 months. Total project timelines from design to construction completion typically run 6–12 months.
Do I need an architect for Lake Forest renovations?
Yes. Lake Forest requires that construction documents be prepared by or under the direction of an Illinois-registered architect, bearing the architect's stamp and certification. Budget $15,000–$60,000 for architectural services depending on project scope. Choosing an architect without Lake Forest experience is a common and expensive mistake.
How do I know if my property is in a Historic District?
Lake Forest provides an interactive map of Local Historic Districts and Landmarks on the City website. You can also contact Community Development at (847) 810-3520. The five Local Historic Districts are: East Lake Forest, Vine-Oakwood-Green Bay Road, Green Bay Road, Meadowood Dairy, and Grove School. Individual Landmarks outside these districts also require HPC review.
What is building scale in Lake Forest?
Building scale refers to Lake Forest's system of limiting maximum floor area based on lot size. Formulas in Section 150.148 of the City Code calculate allowable square footage. Certain elements (porches, covered entries, porticos) may be exempted up to 10% above maximum if the project meets design guidelines. Projects exceeding building scale require variances.
Can I modify plans after Lake Forest approval?
No — not without re-approval. Lake Forest's code states: "It shall be unlawful to alter or in any way modify plans that have been reviewed and approved by the City Council." Changes discovered during inspection can halt construction and require new board review. Careful planning during design phase is essential.
What is the two-year waiting period for demolition?
Lake Forest imposes a two-year waiting period for demolition permits unless the City Council first approves a replacement building. This protects the community from "demolition by neglect" and empty lots. If you're planning to demolish and rebuild, you must obtain approval for your replacement design before demolition can proceed.
How do I find a contractor for Lake Forest renovation?
Look for contractors with specific Lake Forest experience, established architect relationships, Historic District restoration capability (if applicable), and premium material sourcing ability. Essential qualifications: $2M+ liability insurance, Lake Forest references you can contact, and project management capability for extended timelines. Assembly Squad Remodeling has completed projects throughout Lake Forest including Historic District work. Contact us at (312) 544-9150.
Ready to Begin Your Lake Forest Renovation?
Renovating in Lake Forest requires navigating one of the North Shore's most sophisticated approval processes. The reward is living in — and contributing to — one of America's most architecturally significant communities.
Success comes from: determining early whether your property requires Building Review Board or Historic Preservation Commission review; engaging Lake Forest-experienced architects; designing projects that work with Lake Forest's standards; allowing adequate time for approvals; and selecting contractors who can deliver the quality Lake Forest expects.
Contact Assembly Squad for a consultation on your Lake Forest estate renovation. We'll discuss your project scope, explain the approval process for your specific property, connect you with experienced Lake Forest architects if needed, and provide realistic budgets and timelines.
Your Lake Forest estate deserves renovation that honors its heritage while meeting your family's needs. Let's make it happen — the right way.