Design-Assist & Preconstruction Plumbing Contractor Serving St. Louis, St. Charles & Jefferson County
Legacy Plumbing joins St. Louis metro projects during design to price the plumbing scope while it can still change. Our estimators and field leadership review constructability, budget and coordination early so the drawings you release are buildable.
Start a Preconstruction Conversation
Tell us scope, schedule, and site address. We reply within one business day.
Who Brings Us in Early
- Owners and developers setting a budget
- General contractors on CM-at-risk projects
- Architects validating fixture and riser layouts
- Mechanical engineers coordinating tight ceilings
- Industrial owners planning process piping
- Healthcare groups planning phased renovations
How Preconstruction Runs
Concept Budget
Order-of-magnitude pricing from early documents so the plumbing line item is real before design goes further.
Constructability Review
We flag routing conflicts, undersized chases and fixture selections that will cost money in the field.
Value Engineering
Alternates priced side by side — material, system type and phasing — with real cost and schedule impacts.
Coordination & Modeling
Our layout uses Leica total station technology so what is modeled is what gets installed.
GMP Handoff
The preconstruction team hands the job to the same field leadership that helped price it.
Why Choose Legacy for Design-Assist & Preconstruction
Why Owners Choose Legacy for Design-Assist
Estimators who have run the field
The people pricing your job have installed the work, so the budget reflects how it actually gets built.
Master-licensed in Missouri jurisdictions
Code review during design catches jurisdiction-specific requirements before permit comments do.
Nearly three decades of commercial projects
Since 1996 we have priced and built commercial and industrial systems across the metro.
Continuity from budget to punch list
No handoff to a stranger — the preconstruction team stays involved through closeout.
Request a Design-Assist & Preconstruction Bid
Send scope, schedule and site address. We reply within one business day.
Start a Preconstruction Conversation
Tell us scope, schedule, and site address. We reply within one business day.
Need a Plumber in St. Louis or the Surrounding Area?
Same-day estimates, transparent pricing, and 25+ years of trusted craftsmanship across the St. Louis metro and a 2-hour radius.