06:42AM | 06/06/07
Member Since: 06/05/07
4 lifetime posts
I am looking into buying a house built in 1925. It is understood that "new plumbing" is needed. This house is about 1,016 square feet with one full bathroom. I am curious as to how much this might cost. Ballpark figure of course.

Thank you for any feedback!


08:37AM | 06/06/07
Member Since: 01/24/06
1449 lifetime posts
Left field ball park number $1,763,472.79

If you supply a capitol improvement certificate no tax will be charged on Materials

I am figuring in this price a totally new Extra Heavy cast iron soil and waste system No hub cast Iron for venting as it is non scaling.

Type K copper water supply lines with silver brazed joints a fire suppression system installed as now would be the time to do it.

Hydronic heating with indoor outdoor set back thermostat , non electric zone valves pressure and temperature balance shower valves with integral stops.

New building house trap with a FAI and vent terminal, geothermal lines to supplement the air chilled water system in the summer and hot water needs in the winter.

All valves shall be full port bronze ball valves rated to 600 PSI Water oil or GAS.

Every change of direction greater then 45 degrees or longer then 50 ft shall have a full size clean out installed.

The entire system shall be tested to a hydrostatic head of no less then 10 feet and this test shall remain for 1 hr with no loss of water depth.

The schedule 40 Gas piping will be sized like the vent piping by developed length and the fixture load demand.

All exposed piping in the bathroom with be 24 K or double dipped Chrome RED BRASS piping.

All work performed by a Licensed master plumber

Alternative BALL PARK number


All work performed by non licensed people using plastic or plastic derivatives, no fire protection, no scald protection, band wire for piping supports in lieu of clevis hangers and riser clamps

No means for allowing the coefficient of expansion per degree per foot of temperature change.

Poorest quality importated materials one can get in home center without the ASSE/ASTM/NBBI/ASME/UL/AGA or any other code regulated materials /fixtures or appliances

NO insured contractors or any skill level to menthion

Of course all the above is a BALL park number


08:55AM | 06/06/07
Member Since: 06/05/07
4 lifetime posts
Thanks for all the detailed feedback. It is appreciated. If you don't mind I would like to ask you this then.

What would you suggest for good quality plastic piping? (with scald protection)

Or acceptable quality for copper?


10:35AM | 06/06/07
Member Since: 01/24/06
1449 lifetime posts
Depending on water quality copper Type L above ground K below ground if your codes permit

CAST Iron above ground for a quiet long lasting system non carcinogenic and proven longevity unlike the many,many documented "state of the art" plastic failures


Many of the homes I work in in NYC were built in 1922 or before and the brass water lines I would venture to say will last another 40 years. The Cast Iron sewers other then minor root infiltration could give another 20 -30 years of service.

Just because piping is old doesn't mean it has to be replaced.

Before you just arbitrarily re pipe hire a local licensed master plumber SELF Employed who works in the area and ask him /her who they work for in your area then ask their opinion on the pipes remaining lifespan.

Self employed LMP's do depend on word of mouth advertising

If a contractor does the job right for someone they tell 3 people If they screw one account that victim will tell everyone "don't use that crook/ incompetent etc"

Just make sure they are licensed and insured.

Look at the NYC water mains which some are still made of WOOD....

Want to talk about old look at the Churches in Europe with original copper

flashings over 1,200 years old Plastic does not have this proven track record

Look up on Google plastic piping failures and see the screen light up.

Have any more questions please feel free to ask


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