This is a design frame, not a finished page. Every dotted field below is a placeholder. Nothing on this page has been invented. License numbers, bonding capacity, insurance limits, safety figures, project records and contact details all have to come from 3 Generation Plumbing before this goes live. There are 0 fields awaiting information.
3 Generation Plumbing, LLC is a commercial and industrial plumbing contractor in Houston, Texas. We build the whole system, from the utility tie in below the street to the vent through the roof.
Our scope is the hydraulic system of a building. Sanitary and storm, domestic water and recirculation, natural gas, medical gas, and process and utility piping for plants. We price from documents, we model our scope, and we resolve the coordination before anyone hangs a pipe. That is the difference between a plumbing contractor and a plumber, and it is the part a general contractor is actually buying.
We take work on hard bid and on negotiated packages, and we hold a separate service division so a warranty call never pulls a foreman off a job.
Every sector below carries its own rules, its own inspectors and its own way of failing. We build to the sector, not to a standard detail.
Medical gas to NFPA 99, brazed under nitrogen purge and verified by an independent inspector. Infection control barriers, phased work in occupied buildings, and above ceiling coordination in tight interstitial space.
Med gas, ICRA, occupied phasingStacked risers, pressure zoning, booster sets and PRV stations. Repetitive floor cycles built to a schedule that does not slip, because on a tower a day lost on one floor is paid for again on every floor above it.
Risers, zoning, floor cycleProcess and utility piping in carbon steel, stainless and thermoplastic. Documented weld procedures, certified welders, hydrostatic and pneumatic testing, and turnaround work inside a live plant with a permit for every task.
Process piping, weld QA, turnaroundChilled water and condenser piping, leak detection under the floor, redundant paths and valved isolation. Flushing, cleanliness and commissioning support, on a job where a wet floor is a headline.
CHW, leak detection, Cx supportPublic bid documents, prevailing wage, and a summer window that does not move. Gang restrooms, kitchens, labs and field houses, closed out and inspected before the students come back.
Public bid, summer windowGuest floor stacks, kitchen and laundry rough in, grease waste, and a domestic hot water recirculation loop that actually holds temperature at the furthest fixture instead of on the drawing.
Guest stacks, grease, DHW recircTenant fit out on landlord risers, tie ins in occupied towers, and after hours work run with the building engineer so the tenant on the floor below never knows you were there.
Fit out, tie ins, after hoursSanitary, storm, domestic water and fire service from the city main to the building. Trench safety, dewatering, bedding and backfill, and a test the authority having jurisdiction will sign.
Main to building, AHJ testingPreconstruction and coordination are listed first on purpose. They are the two capabilities that decide whether the field work goes well, and they happen months before a truck arrives.
We price from documents at any stage. A conceptual budget from a narrative, a hard number from a permit set, and a cost line you can track from schematic design through to a guaranteed maximum price without it moving underneath you.
Quantity takeoff from the model or the drawing. We publish our assumptions, our exclusions and our unit rates, so the number can be defended line by line in a buyout meeting instead of argued about.
We model our own scope, we sit in the coordination meetings, and we clear hard clashes against structure, duct and conduit before the deck is poured. Fabrication drawings come out of the coordinated model, not out of a field measurement.
Sanitary, storm, domestic water and fire service from the main to the building. Trench protection, dewatering, granular bedding, compaction testing and tie ins scheduled around the city, not around us.
Carbon steel, stainless, copper, and thermoplastic. Qualified welders working to written procedures, with pressure test records, material traceability and a turnover package that survives an audit.
Oxygen, medical air, vacuum, nitrogen and nitrous oxide. Brazed under nitrogen purge by certified installers, source equipment and alarms set, and verified by an independent third party before the department opens.
Assembly selection and installation, annual testing, and cross connection control records in the form the water authority will accept the first time. Domestic water flushing and disinfection with results in writing.
A separate crew for warranty, repair and planned maintenance. It is staffed on its own so a service call never pulls a foreman off a project, and so the owner keeps a relationship after close out.
Nothing in this table is written yet. Every line is backed by a document, and the document is what we will send. A claim without a certificate behind it is worth nothing on a prequalification form.
| Item | Value | Source document | Status |
|---|---|---|---|
| Texas Responsible Master Plumber | RMP name and license no | TSBPE license card | Awaiting |
| TSBPE company registration | Registration no | TSBPE registration | Awaiting |
| Journeyman and tradesman count | Licensed field staff | License roster | Awaiting |
| Medical gas installer, ASSE 6010 | Certified installers | ASSE certificates | Awaiting |
| Backflow assembly tester, TCEQ | Tester license no | TCEQ license | Awaiting |
| Bonding capacity, aggregate | Aggregate limit | Surety letter | Awaiting |
| Bonding capacity, single project | Single project limit | Surety letter | Awaiting |
| Surety company and rating | Surety and A.M. Best rating | Surety letter | Awaiting |
| General liability | Per occurrence and aggregate | ACORD 25 | Awaiting |
| Excess or umbrella liability | Umbrella limit | ACORD 25 | Awaiting |
| Automobile liability | Combined single limit | ACORD 25 | Awaiting |
| Workers compensation | Statutory and employers liability | ACORD 25 | Awaiting |
| Experience modification rate | EMR, last three years | NCCI worksheet | Awaiting |
| Recordable incident rate | TRIR and DART, three years | OSHA 300A logs | Awaiting |
| Safety training | OSHA 30 and OSHA 10 counts | Training records | Awaiting |
| Substance abuse program | Program and consortium | Policy document | Awaiting |
| HUB, MBE or DBE status | Certification and number | State certificate | Awaiting |
| Years in operation | Year founded | Formation documents | Awaiting |
| Workforce and fleet | Field headcount and trucks | Payroll and fleet list | Awaiting |
| Largest project completed | Value and sector | Close out file | Awaiting |
| W-9 and certificate of insurance | Issued on request | Accounting | Awaiting |
Six sheets, and every field on them is empty until the close out files are opened. A project record with a name, a value, a duration and a reference who will pick up the phone is the single most useful thing on this page. Nothing here is invented to fill the gap.
Houston is not a neutral place to put pipe in the ground. The soil moves, the water rises, the storms take the power out and the water is hard. A detail that works in Denver fails here, and it fails at the joint, underground, after the slab is poured.
The Beaumont formation shrinks and swells with moisture, and slabs in Houston move every year. Rigid pipe under a moving slab does not bend, it opens at the joint, and then you have a leak under a finished floor. We sleeve at the penetration, use flexible connections where movement is expected, and we test after backfill and again at close out. A pressure test before the slab moves proves nothing.
Elevation drives the design here, not preference. We check the current FIRM panel, set fixtures, water heaters and equipment above the required flood elevation, and detail backwater valves so the building does not take the street's water back through the lowest fixture. Flood damage in this city is a plumbing failure as often as it is a roof failure.
The question after a storm is not whether the building is standing, it is whether it can operate. Domestic water storage, sump and sewage ejector pumps on the standby power side, and drains that keep working when the grid does not. We coordinate that with the electrical scope early, because a pump on the wrong panel is a pump that stops.
Houston water is hard. Scale takes years off a water heater, chokes a recirculation loop and destroys the efficiency an owner paid for. Where the owner intends to hold the building, we specify treatment, we size the loop honestly and we set up a maintenance interval instead of leaving it to be discovered in year four.
Send the documents. We confirm receipt the same business day. If the scope fits we give you a number, and if it does not fit we say so early instead of no-bidding on the day it is due.
Drawings, specifications, addenda, the bid form and the due date. A link to the plan room is fine. Tell us the delivery method and whether the package is bonded.
You get an acknowledgement the same business day with a named estimator, a yes or no on intent to bid, and any scope questions in writing while there is still time to issue an addendum.
Completed on your form. Financials, surety letter, certificate of insurance, safety record, license documents and project references, sent directly to your prequalification contact rather than posted publicly.
A number with the scope included, the scope excluded, the alternates priced and the assumptions written down. Nothing hidden in a footnote to be argued about at buyout.
Existing buildings, warranty calls and planned maintenance are handled by the service division, not by the project teams. Different number, different dispatch, and it does not go through the estimating desk.
Service dispatch phone Service hours and after hours cover
Everything below is a placeholder. These are the details that have to be right before a single invitation goes out, because an estimator who cannot reach you moves to the next name on the list.