Hardscape is explicitly reviewable here
Manitou's historic district design guidelines name it directly: walkways, steps, patios and walls are part of the public realm, and exterior alterations visible from the right-of-way in a local historic sub-district fall under the Historic Preservation Commission's jurisdiction. That is unusual — in most of El Paso County a ground-level patio is not reviewed by anyone. In Manitou, if the street can see it, it is reviewed.
Plan for one to two months, not one to two weeks
Approval runs through a Material Change of Appearance Certification, decided in a public hearing, and it typically takes one to two months. Projects that need a Pikes Peak Regional Building Department permit also need a Property Improvement Permit from the City of Manitou Springs first. None of that is a reason to avoid the job — it is a reason to start the conversation early, and Apex will tell you the realistic calendar at the estimate rather than after you have signed.
Material choices that clear review more easily
Review is about whether the work is consistent with the district's character, so the material conversation matters more here than anywhere else Apex works. Stone-set pavers and stamped patterns that read as cut stone generally sit more comfortably in a historic streetscape than a broad expanse of smooth grey slab. We would rather design toward approval from the start than submit twice.