Cutting an Eichler Slab Without Hitting the Heating
Mountain View has roughly 250 Eichlers with hot water tubing cast into the floor slab. How the tubing gets located before any concrete is cut, and why.
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Eichler and Mid-Century Bathrooms in Mountain View
Post-and-beam houses with radiant slabs and no attic, where a standard bathroom scope does not apply.
Mountain View has a significant stock of mid-century modern houses, including several Eichler tracts, and their bathrooms do not behave like anything else in the city. The construction is post-and-beam with an exposed or low-slope roof, no attic above and a concrete slab below, and in most of them the original heating is hot water circulating through tubing cast into that slab. Every one of those features constrains a bathroom remodel. There is nowhere overhead to run a duct or a recessed can, there is nowhere below to run a drain, and cutting the slab carelessly puts a hole in the heating system. Projects generally run $35,000 to $75,000. The premium is not decorative, it is the cost of working within the structure instead of against it.
What the scope covers
- Radiant tubing located before any concrete is cut, not discovered during it
- Drain and vent routing planned around a slab floor and a roof with no attic void
- Exhaust ventilation solved without an attic run, using a through-roof or through-wall path
- Lighting designed for a ceiling that cannot take standard recessed cans
- Original mahogany, tongue-and-groove and terrazzo details retained where they are sound
- Fixture and tile selections that suit the period without turning the room into a reproduction
- Glass and screening choices consistent with the open plan these houses were designed around
- Structural and roofing detail coordinated where the work touches the beam or the roof plane
Get a free quote for this work
A local remodeler walks the room with you, checks what is behind the wall and under the floor, and follows up with a written price broken down by scope.
Eichler and Mid-Century questions
The things homeowners ask most often before committing to eichler and mid-century work.
+ Why does an Eichler bathroom remodel cost more?
Because three of the assumptions behind a normal bathroom scope are missing. There is no attic, so ducting an exhaust fan and running lighting are design problems rather than routine. There is a slab, so drain lines cannot simply be re-routed underneath. And there is usually radiant heating tubing in that slab, which has to be located and worked around. None of it is exotic, but all of it takes planning and a crew that has done it before. Typical projects land at $35,000 to $75,000.
+ What happens if the radiant heating tubing gets cut?
The system loses pressure and the leak is under concrete, which is an expensive and disruptive repair. This is the single most important thing to get right in a mid-century slab house. The tubing should be located before any saw touches the floor, and there are non-destructive ways to do that, including thermal imaging while the system is running. Original steel tubing in the oldest houses is also nearing the end of its service life on its own, so a remodel is a sensible moment to find out what condition the loop is in.
+ Can I put a modern walk-in shower in a mid-century house?
Yes, and it usually suits the architecture better than the original small tub did. The constraints are the slab and the drain. A curbless shower needs the concrete recessed, which is more involved where radiant tubing runs through the area, and the drain has to reach an existing waste line at a workable fall. In practice the shower often ends up close to where the original wet wall was, which is not a compromise so much as the same logic the house was built with.
+ How do you ventilate a bathroom with no attic?
Either straight up through the roof with a proper flashed roof jack, or horizontally out through an exterior wall where the bathroom sits on the perimeter. Both are normal details, both need doing properly, and the roof route in particular has to be integrated with the low-slope roofing rather than cut into it afterwards. What does not work is venting into the roof cavity, which in a house with no ventilated attic will put moisture exactly where it does the most harm.
+ Should I keep the original fixtures and tile?
Where they are sound and characteristic, often yes. Original terrazzo, mahogany panelling and period tile are part of what these houses are worth, and buyers who seek them out notice when they have been stripped. Where they are failing, or where the original bathroom is simply too small to function, the better approach is a room that reads as period-appropriate rather than a reproduction. Houses built before 1978 also warrant testing before demolition: asbestos in sheet flooring, mastic or joint compound and lead in paint are common in this vintage, and testing costs $300 to $800 against $1,500 to $8,000 for abatement.
Eichler and Mid-Century across the valley
The same work runs across the north Santa Clara Valley and the lower Peninsula. Each area page covers the housing stock and the permit process for that specific city.
- Eichler and Mid-Century in Mountain View
- Eichler and Mid-Century in Palo Alto
- Eichler and Mid-Century in Los Altos
- Eichler and Mid-Century in Los Altos Hills
- Eichler and Mid-Century in Sunnyvale
- Eichler and Mid-Century in Cupertino
- Eichler and Mid-Century in Santa Clara
- Eichler and Mid-Century in Menlo Park
- Eichler and Mid-Century in Atherton
- Eichler and Mid-Century in Saratoga
- Eichler and Mid-Century in Campbell
- Eichler and Mid-Century in Redwood City
Further reading
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Does a Bathroom Remodel Pay for Itself in Mountain View?
Cost recovery data, what a dated bathroom does to a listing in a two-million-dollar market, and why resale is usually the wrong reason to do the work at all.
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California Contract Rules That Surprise Newcomers
A $1,000 deposit cap whatever the project costs, a written contract above $500, and a lien that can attach even after you have paid the contractor in full.
Other scopes worth pricing
Where a house has two bathrooms due for work, doing both under one permit and one mobilisation is usually cheaper than two separate projects a year apart, and it is worth asking for both prices at the same walkthrough.
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Full Bathroom Remodel
The room taken back to studs and rebuilt, typically eight to twelve weeks of construction once materials land
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Primary Bathroom Remodel
Larger suite work: separate shower and tub, double vanity, the projects where design time earns its keep
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Walk-In Shower Conversion
Pulling an unused tub or a tired fiberglass enclosure and building a properly waterproofed tile shower
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Small Bathroom and Powder Room Remodel
Hall baths and powder rooms in the 35 to 55 square foot range, where every layout decision shows
Start your bathroom project
Call (650) 966-5276, or send the details through the form and a local remodeler prices the job up. The quote is free either way.