The Valley has comparatively little genuinely historic housing, which is exactly why the districts that do exist are distinctive. Willo, Encanto-Palmcroft, Coronado, F.Q. Story and Roosevelt in Phoenix; Catlin Court in Glendale; several others.
These are homes with character that cannot be reproduced, on streets with mature canopy that took most of a century to grow. They also come with a layer of regulation that catches people out when they plan a renovation as though it were any other house.
What a designation typically governs
The specifics vary by municipality and by district, so the only reliable answer is for the particular property. But the general shape is consistent:
- Exterior changes visible from the street are the primary concern. Windows, doors, roofing material, porch details, cladding, and anything that changes the front elevation.
- Additions are usually possible but are expected to be subordinate and sited where they do not dominate the original structure — frequently to the rear.
- Demolition is generally the most constrained action of all.
- Interiors are usually far less regulated, which surprises people. In most residential designations you can reconfigure the inside with ordinary permitting.
What it does not mean
It does not mean the house is frozen. People renovate in these districts constantly, including substantially. It does not mean you cannot have a modern kitchen, modern systems, or an addition.
What it means is that some decisions are made in consultation rather than unilaterally, and that the timeline includes a review step. Planning for that is straightforward. Discovering it after ordering windows is not.
The windows question
Windows are where this comes up most often, because original wood windows are usually single-glazed and the owner wants performance.
Replacing them with a modern unit of a different material and profile is the thing most likely to be refused. There are usually paths that work — repair and weatherstrip the originals, add storm windows, or use replacements that match the original profile, divided-light pattern and material closely enough to satisfy review.
These are generally more expensive than a standard replacement unit, and that belongs in a renovation budget from the start.
Why it is still worth it
The regulation exists because the thing being protected is scarce. A street where the houses are consistent, the trees are mature and the character is intact holds its appeal in a way that is difficult to engineer.
Buyers who want these homes generally want them precisely because of what the designation preserves. The constraint and the value are the same thing.
What to establish before you buy
- Whether the property is actually within a designated district, and which one — boundaries are specific and a street can be split.
- What the governing guidelines say about the changes you have in mind.
- What the review process involves and how long it takes.
- Whether previous owners made changes that were never approved, which can become your problem.
- Whether any incentives or programs apply — some jurisdictions offer them for designated properties.
All of this is public information, obtainable before an offer, and it changes what a renovation plan should look like.
Common questions
Can I add on to a home in a historic district?
Usually yes, subject to review. Additions are generally expected to be subordinate to the original structure and sited where they do not dominate the primary elevation, which in practice often means to the rear. The specific guidelines for the district govern.
Does the designation control my interior?
In most residential designations, far less than people expect. Interior reconfiguration is typically subject to ordinary permitting rather than historic review. Confirm for the specific district, as this does vary.
What if previous work was done without approval?
It can become the current owner’s issue, and it is worth establishing during diligence. Ask about permit history for any visible alterations, particularly windows, additions and front elevation changes.
This is general information to help you ask better questions about a specific property. It is not an inspection, an engineering opinion, an appraisal or legal advice, and it does not replace the licensed professionals who provide those.
Where this applies
Related reading
- Can You Open Up a 1990s or 2000s Floor Plan? The most common renovation request in the East Valley, and the one most often priced wrong.
- Buying a Mid-Century Block Home: What the Structure Will Let You Do The Valley’s most under-rated renovation stock, and how to tell a good one from a money pit.
- Renovation Sequencing: The Order the Work Has to Happen In Doing the right work in the wrong order is how budgets go sideways.