Denver's construction waste rule starts Sept. 1 — and it touches ordinary remodels
This is the biggest permit change of the week for homeowners. Denver's Community Planning and Development office confirmed on Aug. 17 that the construction and demolition side of the Universal Recycling and Composting Ordinance (URCO) takes effect Sept. 1, 2026. It came out of the 2022 Waste No More ballot measure.
Here is the part that matters at the permit counter. Before a permit is issued, covered projects have to submit a waste diversion plan and post a fully refundable performance security deposit. During the job, the project has to divert at least 50 percent by weight of the three covered materials through recycling or reuse. When the job is done, you document that you hit the number and the deposit comes back.
Which projects are covered:
- New construction over 500 square feet
- Additions over 500 square feet
- Demolition over 500 square feet
- Interior remodels over 2,500 square feet
Read those thresholds carefully. A typical kitchen or bath gut is nowhere near 2,500 square feet of interior remodel, so it stays out. But a room addition or second-story pop-top clears 500 square feet easily, and so does a detached-garage teardown. There is an escape hatch — applicants can ask for modified diversion requirements when site conditions make 50 percent impossible, or a reduced deposit for economic hardship — but you have to ask before the permit issues. The adopted rules and regulations (PDF) spell out the process.
Practically, this is a scheduling item more than a cost item. Sorting debris on site takes room for a second container, and the material has to go to a facility that will weigh it and give you a ticket. On a tight lot with no alley, that container is the hard part — worth sorting out before demo day, not during it.
The 2026 electrical code has been in effect since Aug. 1
Denver adopted the 2026 National Electrical Code effective Aug. 1, 2026. Every new submittal to CPD from that date forward has to comply with the 2026 NEC. Projects that already had a plan review submission in before Aug. 1 can keep using the 2023 NEC as the basis of design.
If your project has been sitting in design since spring, confirm with your electrician which code your panel schedule and circuit layout were drawn against. A basement finish drawn to 2023 and submitted in September gets reviewed against 2026 — and a redraw at that stage costs you review time you already waited for. CPD is fielding questions at electrical.review@denvergov.org.
I-70 bridge repairs at Kipling and Garrison: September weekend closures ahead
CDOT and Myers and Sons Construction are repairing three I-70 bridges between mile points 267 and 268 in the Wheat Ridge and Arvada area — the eastbound and westbound structures over Kipling Street (CO 391) and the westbound structure over Garrison Street. It is a roughly $5 million job that started in August and is expected to wrap in late October.
The schedule as CDOT has published it:
- Overnight work runs 7 p.m. to 6 a.m., Sunday through Thursday
- Overnight closures of the Kipling on- and off-ramps for shoulder paving ran the week of Aug. 16, 8 p.m. to 6 a.m.
- Bridge rehabilitation on the westbound Garrison structure is scheduled to begin Aug. 25, dropping eastbound I-70 to one lane and westbound to two
- Extended weekend closures of I-70 at Kipling are planned for September for hydro-demolition on the Kipling decks
During those September weekends, you will not be able to enter or exit I-70 at Kipling, and Kipling itself gets closed to northbound and southbound traffic at the interchange while I-70 traffic uses the ramps as through lanes. CDOT is telling drivers to expect 30 minutes or more of delay. Text I-70REPAIRS to 21000 for alerts. The CDOT announcement has the full detour picture, including a bike and pedestrian detour at Garrison.
For a job site in Wheat Ridge or Arvada, the September weekends are the ones to protect. Concrete pours, roof tear-offs, and cabinet deliveries all want a clean truck route, and a closed Kipling interchange pushes everything onto Wadsworth and Ward.
Tougher rules for neglected and derelict properties
Also effective Aug. 1: Denver updated its rules for neglected and derelict properties. Once a property is designated, the owner has 30 days to attend a pre-application meeting with CPD and pick a path: rehabilitate, sell, demolish, or — for vacant land — show six months violation-free. Administrative citations run $5,000 per violation and can be issued repeatedly until the owner starts making progress, with a court summons and a court-appointed receiver as the escalation.
Most homeowners will never touch this. It matters if you are buying a distressed property to fix up, or if a project stalled out mid-demo and got flagged. If you are shopping a fixer, ask whether the address carries a designation before you write the offer.
In the pipeline: public bids and a middle-housing rewrite
CDOT's bid opening calendar has two Denver-metro jobs set for Aug. 27 — curb ramp improvements at various locations across Adams, Denver, and Jefferson counties, and traffic-flow work on northbound I-225 from southbound I-25 to Yosemite Street. Neither closes a road tomorrow, but both signal where crews and traffic control get committed later this year.
On the zoning side, Denver's Unlocking Housing Choices text amendment is still working through the process. It would open more residential districts to middle-housing forms like duplexes and small multi-unit buildings, and it needs City Council approval. Nothing has changed for your lot yet, but the project page is worth a bookmark if you own a corner lot or an oversized parcel.
What this means for your project
Four practical takeaways from this week:
- If your addition or demo permit is close, decide whether to file before Sept. 1. A permit issued before the URCO date is not subject to the diversion plan and deposit. That is not a reason to rush a bad set of plans through — but if your drawings are done, the calendar matters.
- Ask your electrician which code your drawings were built on. If the plan review submission did not land before Aug. 1, you are on the 2026 NEC. Better to find that out now than in a correction letter.
- Budget the second dumpster. On covered jobs, source-separated debris needs somewhere to go. On a narrow lot that may mean a smaller container swapped more often, which is a line item, not a rounding error. Our Denver remodeling price ranges page is a fair starting point for what site logistics do to a number.
- Check the September I-70 weekends against your delivery schedule if you are building anywhere near the Kipling interchange.
None of this changes what a good project looks like. It changes when you file and how you stage the site. If you are sizing up a basement, the basement finishing calculator will get you a working range in a couple of minutes, and the Denver metro permit guide covers what each jurisdiction actually asks for. When you are ready to talk specifics, call us at (720) 980-3913.
Keep reading from the BH Builders blog
Two of this week's changes are about paperwork you file before demo day, not work you do on site. That is the cheap kind of change to get right — as long as you read it in August instead of finding out in September.DT · Owner, BH Builders
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