Opening a restaurant in Olde Town? The commercial plumbing an older building may not be ready for

Character comes with older plumbing

Olde Town Arvada, revitalized around the RTD rail station, is a sought-after spot for restaurants and cafes, and its historic buildings are a big part of the appeal. But that character comes with a practical reality for anyone opening a food business there: the plumbing in an older building was often never designed for a modern commercial kitchen or a full-capacity restroom, and a new tenant frequently needs upgrades before opening.

This is not a reason to avoid an older building, it is a reason to check the plumbing before you sign and budget for it in your build-out. The businesses that get surprised are the ones that assumed the existing plumbing would handle a busy kitchen; the ones that succeed assess it against their actual intended use up front. For a food business, where a plumbing failure means closed doors and lost revenue, that assessment is worth doing carefully.

The grease trap question

The most important commercial-kitchen plumbing item is the grease interceptor, or grease trap. A commercial kitchen generates grease that must be captured before it reaches the sewer, both to meet code and to keep the line from clogging. An older Olde Town building may have no interceptor, an undersized one, or a neglected one, and any of those sends grease into the lateral and backs up the kitchen at the worst possible time, during service.

So a key early question is whether the building has an adequate grease interceptor for your kitchen's output, and if not, what it takes to add or upsize one. This is not optional; it is a code requirement and a practical necessity. A grease trap that is right for a previous tenant's light use may be far too small for a busy restaurant, so it has to be evaluated against your specific kitchen, not just assumed to be fine because one exists.

An older Olde Town building's plumbing was rarely sized for a modern commercial kitchen. Check the grease trap, the hot water and the drains before you sign, not after.

Water heating and drain capacity

A commercial kitchen puts demands on plumbing that a previous retail or office use never did. It needs high-demand hot water for dishwashing and sanitation, well beyond a residential-style water heater, and it needs drain lines that can handle the volume without constant backups. An older building's existing water heating and drainage may simply be undersized for a restaurant, even if it worked fine for whatever was there before.

Assessing whether the hot water supply and the drain capacity match your intended kitchen is part of the pre-opening plumbing review. Upgrading water heating for a commercial kitchen, and keeping the drain lines clear with jetting where older lines are prone to grease buildup, are common parts of preparing an older Olde Town space for food service. Better to plan those than to discover mid-service that the hot water runs out or the drains back up.

Ventilation and floor drains are part of this picture too. A commercial kitchen typically needs floor drains positioned for cleaning and for the equipment that discharges to them, and an older building repurposed from retail or office use may have none where they are now required. Adding or relocating floor drains means opening the slab, which is far cheaper to plan into the build-out than to retrofit after the kitchen is finished. It is another reason assessing the space against the actual intended kitchen layout, before the build-out is designed, saves both money and opening-day delays.

Restrooms, backflow and code

Beyond the kitchen, a restaurant needs restrooms that meet current commercial code and capacity requirements, which an older building may not have as configured. A tenant improvement often involves adding or reworking restrooms, moving fixtures, and bringing the whole plumbing setup to current commercial code, all of which has to be permitted and inspected through the City of Arvada.

Commercial properties also carry backflow prevention requirements on any irrigation, boilers or equipment connected to the potable supply, with certified annual testing. All of this is standard for a commercial build-out, but it has to be planned into the timeline and budget so the business can open on schedule. A build-out that discovers these requirements late is a build-out that opens late, which is costly when a lease is already running.

The value of one plumber who knows the building

For a restaurant, plumbing is not a one-time build-out item; it is ongoing. Grease interceptors need regular service, drain lines in older buildings need periodic jetting, backflow assemblies need annual testing, and something will eventually fail during business hours and need fast response. There is real value in having one commercial plumber who knows your building, from the build-out through the ongoing service, rather than a new face every call.

That continuity matters most in an emergency. When a kitchen drain backs up during a Friday dinner rush, you want a plumber who already knows your setup and treats it as the revenue emergency it is. Building that relationship during the build-out, with a plumber who understands both the older building and the commercial code, is part of setting the business up to run smoothly rather than lurch from one plumbing crisis to the next.

Where commercial plumbing connects