Home Additions in Glendale, CO

Glendale is a little over a square mile of land completely surrounded by Denver, and almost the entire city is zoned a single way: Planned Unit Development District, or PUDD. That is a very different starting point from a city with a conventional zoning map and a printed setback table by district. Planning a home addition here means understanding that Glendale reviews development site-by-site rather than against one fixed rulebook, and it means confirming the Cherry Creek floodplain boundary before assuming a lot is buildable as drawn. Our crew plans Glendale additions around that PUDD structure, the city’s minimum lot-area rules, and its floodplain permit requirement.

Glendale’s PUDD Zoning Means No Single Setback Table

Under Glendale Municipal Code Title 17, the city states that its Planned Unit Development District structure lets the Planning Commission work “on a site-by-site basis rather than by rigid land use standards” to encourage higher-quality development. In practice, that means Glendale does not publish one front/rear/side setback table that applies uniformly across residential lots the way a conventionally-zoned city does. Setbacks, height, and lot coverage for a given parcel come out of that property’s approved PUDD or site plan history.

That makes the first step of any Glendale addition a records check, not a table lookup. We confirm the specific approved setbacks, height allowance, and lot-coverage limit for the parcel with Glendale Planning & Development before finalizing a design, rather than assuming a number that would apply in a differently-zoned city down the road.

Minimum Lot Area Still Sets a Baseline

Even inside the PUDD framework, Glendale’s zoning code sets minimum lot-area figures by residential use: 4,000 sq ft for a single-family residence, 6,000 sq ft for a duplex or townhome, and 10,000 sq ft for a multiple-family residence. Those numbers matter on a project that adds square footage to a lot that is already close to its category threshold, since an addition that changes how a property functions can raise questions about which lot-area category it falls under.

We check the parcel’s lot area and current use classification early, particularly on Glendale’s smaller and denser residential lots, so the addition’s footprint does not create a mismatch with the property’s zoning category.

Cherry Creek Corridor Has Its Own Rule

For lots along the Cherry Creek Corridor, Glendale’s development standards limit the setback area to landscaping and pedestrian amenities only — parking, frontage roads, and structures other than signs are excluded from that strip. An addition planned near the corridor needs to respect that limitation in addition to whatever setback applies to the rest of the parcel under its PUDD approval.

We flag Cherry Creek Corridor lots at the start of design, since the corridor rule constrains what can go in that setback area independent of the general dimensional standards for the property.

Floodplain Development Permits Govern Cherry Creek–Adjacent Additions

Glendale’s floodplain, defined in Municipal Code Chapter 15.16, covers land in and adjacent to Cherry Creek that would be inundated by an intermediate regional flood. Any structure within that mapped area needs a Floodplain Development Permit before it is located, altered, or has its use changed — which covers a home addition directly. Where a regulatory floodway has not been separately designated, new construction, substantial improvement, or fill within the mapped flood zones is restricted unless it is demonstrated the work will not raise the base flood elevation by more than one foot at any point in the community.

Because Cherry Creek runs through a meaningful share of this small city, we check floodplain status for every addition site before finalizing a footprint. A floodplain designation changes the permit sequence and the documentation the city requires before construction can begin.

Licensing and Stormwater Requirements Apply to the Whole Project

An addition needs a City of Glendale–licensed General Contractor, classified by the city as Class A (able to erect, add to, alter, or repair any building or structure) or Class B (limited by height and area). Electrical contractors on the project must hold Master Electrician certification. As with every trade in Glendale, a license held in Denver or another neighboring city does not transfer.

Glendale also runs a Stormwater Construction Program with its own requirements for projects that disturb soil, which an addition’s foundation and excavation work typically does. We were unable to locate a specific published soil-disturbance threshold that triggers the program on an official city page, so we confirm applicability directly with the city for each addition rather than assuming a size cutoff.

Historic Review: Not Documented for Glendale

We looked for a historic-district or landmark-alteration review process that would apply to an addition on an older Glendale property and did not find one published on an official City of Glendale page. If a specific property carries some form of historic designation outside what this research located, we recommend confirming that directly with Glendale Planning & Development before finalizing exterior addition plans.

How We Sequence a Glendale Home Addition

We start with a site-specific records check: confirming the parcel’s approved PUDD setbacks, height, and lot coverage, checking floodplain status against the Cherry Creek boundary, and verifying lot area against the zoning code’s minimums. Licensing for the general contractor and every trade is confirmed before the permit application is filed.

Once the permit is issued, foundation and framing come first, with stormwater controls in place from the start of excavation. Rough electrical, plumbing, and mechanical follow, scheduled for Glendale’s Tuesday/Thursday specialized-inspection days, and the project closes with exterior finish work and a final inspection tied to the site’s approved plan.

Common Questions

Does Glendale have a standard setback table for home additions like other cities?
No. Nearly all of Glendale is zoned Planned Unit Development District, which the city says lets it review development site-by-site rather than by a rigid, published setback table. Setbacks and height for a given parcel come from that property’s approved PUDD or site plan history.

What is the minimum lot size for a residential addition in Glendale?
Glendale’s zoning code sets minimum lot areas by use: 4,000 sq ft for a single-family residence, 6,000 sq ft for a duplex or townhome, and 10,000 sq ft for a multiple-family residence.

Does my addition need a floodplain permit?
It might. Glendale’s floodplain covers land in and adjacent to Cherry Creek. Any structure within that mapped area needs a Floodplain Development Permit before it is altered, so we check floodplain status against the property before finalizing an addition’s footprint.

Can an out-of-town contractor build my Glendale addition?
Only if they hold a City of Glendale contractor license. The city is explicit that a license from Denver or another neighboring jurisdiction does not qualify a contractor to pull a Glendale permit, and additions require a licensed Class A or Class B General Contractor.

Talk to Us About Your Project

Tell us what you’re planning to add, especially square footage, placement on the lot, and proximity to Cherry Creek. We handle the City of Glendale licensing and permit steps, check the property’s PUDD and floodplain status, and coordinate design, inspections, and closeout for the addition.