Coordination
Historic District Submissions
Documentation packages for historic preservation review boards and certificate of appropriateness applications.
Certificate of Appropriateness
Historic District Submissions
Historic district submissions require documentation that goes well beyond a standard permit set. A Certificate of Appropriateness (COA) application must demonstrate that proposed work is consistent with the Secretary of the Interior's Standards for Rehabilitation and the specific design guidelines of the applicable local historic district. We produce the full submission package: existing conditions documentation, materials analysis, proposed scope drawings, and the written narrative that demonstrates compliance with the preservation standards.
Secretary of Interior
Standards
COA Application
Package Type
Always Included
Existing Docs
Included
Narrative Report
Regulatory Framework
Secretary of the Interior's Standards.
01
Rehabilitation
Repair and alterations that allow compatible contemporary use while preserving character-defining features.
02
Preservation
Stabilization and maintenance of existing form, integrity, and materials with minimal intervention.
03
Restoration
Accurate depiction of a property's appearance at a particular period of significance.
04
Reconstruction
Re-creation of a vanished or non-surviving structure with documentary and physical evidence.
Package Parameters
All packages are prepared under the Rehabilitation treatment unless project documentation specifies a different treatment approach.
Engagement Process
How we build the submission.
Historic Resource Documentation
We document the existing historic resource: architectural character, defining features, materials, period-significant elements, and any prior alterations. This existing conditions documentation is the foundation of the COA application.
Standards Compliance Analysis
The proposed scope is evaluated against the applicable Secretary of the Interior's Standards for Rehabilitation and the local historic district design guidelines. We identify any elements that require modification to comply and note any areas requiring clarification from the preservation board.
Submission Package Preparation
We produce the complete COA submission package: existing and proposed drawings, materials specifications, photo documentation, and the written compliance narrative demonstrating consistency with the preservation standards.
Board Response Support
If the preservation board issues comments or requests additional information, we prepare the response drawings and supplemental documentation required to address each item.
Documentation Package
What the submission contains.
Existing Conditions Documentation
Measured drawings documenting the existing historic resource: floor plans, elevations, and character-defining feature details.
Proposed Scope Drawings
Proposed work drawings drawn to the same format as the existing documentation, clearly distinguishing new from existing and indicating reversibility where required.
Materials Analysis and Specification
Written analysis of existing historic materials and specification of proposed replacement or repair materials demonstrating compatibility with historic character.
Standards Compliance Narrative
Written narrative analyzing the proposed work against each applicable Secretary of the Interior's Standard and the local district design guidelines.
Photo Documentation Package
Organized photographic documentation of the existing property and character-defining features, formatted for the COA application.
Board Response Documentation
Response drawings and supplemental documentation addressing preservation board comments, if issued.
Why This Work Matters
Historic approval is a separate path.
Historic preservation boards review proposed work against specific published standards, not general building code. A permit set that passes building department review may fail historic review entirely if it does not demonstrate materials compatibility, reversibility, and consistency with the character of the historic resource. The documentation requirements are different, and the submission must address them specifically.
Two Review Processes
A project in a historic district requires two separate approvals before construction can begin. They run on parallel tracks and neither substitutes for the other.
Building Permit Review
Administered by the building department. Evaluates structural, fire, life safety, and zoning compliance. This is the standard permit path.
Historic Review (COA)
Administered by the Historic Preservation Commission or equivalent body. Evaluates design compatibility with the district's character and the Secretary of the Interior's Standards. Building permits are not issued until the COA is granted.
Common Questions
Historic submissions, clarified.
What is a Certificate of Appropriateness?
A COA is the approval issued by a local historic preservation board or commission authorizing proposed work on a designated historic property. It is a separate approval from the building permit and is typically required before the permit is issued.
Does every change to a historic building require a COA?
No. Most local historic district programs distinguish between contributing and non-contributing properties, and between exterior and interior work. Routine maintenance that does not change historic character is typically exempt. We clarify the specific COA trigger requirements for your property and jurisdiction at intake.
Can you assist with historic tax credit documentation?
Yes. Federal and California historic tax credit applications require documentation that is substantially similar to the COA package. We produce the Part 1 (property evaluation) and Part 2 (rehabilitation description) documentation in coordination with the tax credit consultant.
Who This Serves
Owners and teams working in historic districts.
- 01
Property Owners
Owning a contributing or individually designated historic property and needing COA documentation for proposed work.
- 02
Architects
Designing projects on historic properties who need a documentation and application partner with preservation board experience.
- 03
Preservation Contractors
Specializing in historic restoration and needing permit and COA documentation prepared to preservation standards.
- 04
Developers
Rehabilitating historic buildings for adaptive reuse and needing COA packages and tax credit documentation coordination.
Related Services
Services that support this work.
Permitting
Permit Set Preparation
Jurisdiction-specific permit packages built for first-pass approval.
Drawings
Architectural Drafting
Complete, permit-ready plan sets for residential and commercial projects.
Permitting
Pre-Application Meeting Prep
Organized project documentation for productive pre-application meetings.
Ready to submit to your Historic Preservation Commission?
Share the district, jurisdiction, and scope of work. We confirm the applicable standards and package requirements before any work begins.