ADU builders in Golden, CO
Our shop, our crews, and most of our projects are all in town.
ADU rules in Golden — design, utilities, and licensing
Golden allowed ADUs before the state required it, and HB24-1152 has since removed the friction that used to stop projects: as a subject jurisdiction, Golden must approve ADUs administratively — no public hearing, no subjective design review, no neighbor veto — and can’t require owner-occupancy or dedicated ADU parking where the primary home doesn’t have a parking requirement.
What Golden does still control, and enforces, is how the unit looks and connects. ADUs here are expected to match the primary home’s style, exterior materials, windows, doors, and roof pitch — this is a city that cares about its architectural character, and “complementary” isn’t a suggestion. Utilities are the other Golden-specific constraint: ADUs generally share the primary home’s utility connections, and separate water or sewer taps aren’t permitted unless the city determines they’re necessary. That single rule shapes where an ADU can go on your lot more than almost anything else.
An ADU is a complete home — foundation, utilities, permits, inspections. The rules decide what’s buildable before design starts, which is why we check them first.
Building an ADU on a Golden lot
Golden’s terrain is the other half of the equation. On the sloped foothills lots toward Genesee and around North Table Mountain, an ADU means grade, drainage, and engineered foundations — the city requires caisson foundations to be inspected by a Colorado-licensed professional engineer with a stamped report. Flatter lots near downtown and in Golden Hills and Mesa Meadows are more straightforward, though downtown-adjacent homes bring older utilities and, in places, a historic character the design has to answer to.
One more Golden requirement worth knowing before you hire anyone: the city requires a contractor license for permitted work inside the limits, and ADUs remain subject to Golden’s rental licensing rules once tenanted. We work within both.
Permitting your Golden ADU
Every ADU is permitted and inspected like a new home. In Golden that runs through the City of Golden’s Building Department, via Golden’s ACA Citizens Portal. Under HB24-1152 the approval is administrative — no public hearing — but a detached unit still goes through full plan review, and utility connections, site work, and any required engineering are part of the scope. Any excavation also requires utility locates through Colorado 811. We handle the full path and give you a realistic timeline. Colorado has also been standing up a state ADU financing program through CHFA, and jurisdictions certified by DOLA as ADU Supportive make their residents eligible for additional funding — worth checking current status when you plan your budget. See our Denver ADU regulations guide for the wider legal picture.
We build ADUs throughout Golden. Planning more than an ADU? We also handle basement finishing in Golden and kitchen remodeling in Golden, and everything we do locally is on our Golden remodeling page.
ADU FAQs — Golden
In Golden, yes — the city expects ADUs to match the primary home’s style, exterior materials, windows, doors, and roof pitch. We design to that from the start rather than getting corrected at review.
Generally no. Golden requires ADUs to share the primary home’s utility connections, with separate taps only where the city deems them necessary. This is often the constraint that decides where on your lot the unit can sit.
Golden requires a city contractor license for permitted work inside the limits — stricter than most of the metro — and ADUs are subject to the city’s rental licensing requirements once you tenant them.
Let’s build something right here in Golden.
Send a note about your project, your timeline, and your budget — we’ll set up a free in-home walkthrough, usually within a few days. You’re a neighbor, not a lead.