Cost GuideUpdated July 7, 2026
Upgrading your kitchen is a smart move in any Blue Island home, especially when you add a pot filler or a second sink. These features bring convenience and boost home value, but making them work in houses with aging plumbing takes careful planning. With local homes ranging from 50-year-old bungalows to century-old Victorians, there's a lot to consider behind the walls before you get to enjoy that new faucet or prep sink.
Why Blue Island's Older Homes Make Kitchen Upgrades Tricky
Many homes here still use original galvanized steel or cast iron supply and drain lines. Over time, these pipes corrode and can restrict water flow or cause leaks, especially when you start modifying the system. Plus, houses built before the 1960s often weren't designed with modern appliances in mind. Adding new fixtures may mean dealing with cramped spaces, tight runs, and limited access behind cabinets or inside plaster walls.
Heavy clay soil and flat terrain also put extra pressure on basement plumbing and water lines. Any new kitchen work, like running a pot filler line or adding a second sink, should be planned with the risk of seepage or backup in mind, especially if the basement plumbing connects to an older clay-tile sewer line.
What Drives the Cost of a Pot Filler or Second Sink?
The biggest factors are the distance from your existing supply and drain lines, the material and condition of your current pipes, and what type of fixture you're installing. For pot fillers, you need a dedicated cold (or sometimes hot and cold) line run up behind the stove, often through brick or lathe walls. A second sink, especially in an island, might require both new supply lines and a drain tie-in, which can get complicated if the original kitchen drain isn't close by or is too small.
Other cost drivers include:
- Whether you have to open finished walls, tile, or cabinetry to access plumbing
- If corroded galvanized needs to be replaced with copper or PEX for code compliance
- The need to rework or move venting to handle a second drain
- Permit and inspection costs in Cook County
- Potential need for water pressure adjustments or a pressure reducing valve (PRV)
Common Plumbing Challenges During Kitchen Remodels
We see several recurring issues during kitchen upgrades in Blue Island's older homes:
- Low water pressure from old galvanized supply lines, making a pot filler installation tricky
- Small or offset drains that can't support an extra sink or create venting problems
- Improper slope in waste lines due to original construction for single-basin setups
- Hidden leaks uncovered when opening walls, sometimes requiring full pipe repair or repiping
If your plumbing layout is tight or outdated, sometimes a short run of new PEX or copper is more reliable than trying to patch into corroded lines. It's also a good time to check for early signs of clogging or root intrusion, especially if your drains connect to older clay-tile sewer lines. We often suggest a drain cleaning before closing up walls or pouring new concrete.
Steps for a Smooth Pot Filler or Second Sink Install
- Check water pressure at the planned fixture location using a pressure gauge
- Shut off water main and inspect existing supply and drain lines for corrosion or leaks
- Plan pipe routing to avoid electrical and ductwork, and minimize wall or cabinet demo
- Use proper pipe supports and insulate near exterior walls to protect from winter freezes
- Test supply lines before reinstalling drywall or cabinets to catch leaks early
- If you discover cracked or leaking mains, consult water line services for bigger repairs
For venting, adding a new sink usually means tying into an existing vent stack or adding an air admittance valve. Pot fillers don't need drainage but do require a reliable shutoff and, sometimes, thermal expansion protection if the line runs near a heat source.
Other Upgrades to Consider at the Same Time
If you're opening up walls for a kitchen remodel, this might be the right time to check the condition of your water heater, upgrade your kitchen shutoff valves, or install a new faucet or fixture elsewhere. Addressing slow drains now with a drain cleaning or catching leaks with leak detection can save headaches later.
How We Help Blue Island Homeowners
We bring decades of experience with plumbing found in Blue Island's historic and mid-century homes. If you're planning a new kitchen and want the job done right, our crew can evaluate your existing plumbing, handle the permit process, and make sure your new pot filler or sink is safe, code-compliant, and built to last. Call us at 708-272-1701 to talk through your kitchen remodel. We're here to make upgrades hassle-free and reliable for local families.