Underground Utilities of Houston
Underground Utility FAQ Houston TX | Common Questions
Frequently asked questions about underground utility construction in Greater Houston — storm sewer, sanitary sewer, waterline, fireline, and more.
Pricing & Bidding
How do I get pricing for underground utilities on my project?
The fastest path is to send us the current civil plan set. Use the Upload Civil Plans or Request Underground Utility Pricing form, and our estimating team will review the drawings, specifications, and project requirements, perform a takeoff, and return pricing for the underground utility scope. If plans are still in development, we can provide budget-level pricing from preliminary drawings.
What do you need from me to prepare a bid?
At minimum: the civil plan set (utility plan and profile sheets), project specifications, the bid due date, and any addenda. Geotechnical reports, SWPPP requirements, bond requirements, and the project schedule help us price accurately and avoid exclusions.
Do you provide budget pricing before plans are complete?
Yes. We regularly prepare non-binding budget pricing from schematic or design-development drawings so developers and general contractors can carry realistic underground utility numbers early. Budget pricing is refined as plans progress and is not a bid or a guaranteed price.
What drives the cost of underground utility construction?
The main drivers are pipe size and material, trench depth, groundwater and dewatering needs, soil conditions, number and type of structures (manholes, inlets, vaults), existing utility congestion, pavement removal and replacement, traffic control, testing requirements, and the reviewing jurisdiction's standards. Two projects with identical linear footage can price very differently based on these factors.
Do you bid public and bonded work?
We review public and bonded opportunities case by case. Bond, prevailing-wage, and agency prequalification requirements should be identified in your bid invitation so we can confirm fit before bid day.
Can you bid only part of the underground scope?
Yes. Some projects award us the full wet-utility package; others split storm, sanitary, water, and fireline among trades. Tell us which systems are in your scope request and we will price accordingly.
How long does it take to get a bid back?
It depends on plan set size and bid date. Send the invitation as early as possible with the due date noted; our estimators schedule takeoffs around bid deadlines and will confirm whether we can meet yours.
Scope & Services
What underground utility systems do you install?
Storm sewer, sanitary sewer, domestic waterlines, and fireline systems, plus specialty scopes: lift stations, force mains, grease interceptors, backflow assemblies and vaults, underground detention systems, stormwater pump stations, manholes and inlets, utility relocations, tie-ins, and repair or replacement work.
Are you a turnkey underground utility contractor?
Yes. Turnkey means we take the underground scope from civil plan review through excavation, installation, backfill, testing, municipal inspection, and closeout documentation — one contractor responsible for the complete wet-utility package.
Do you do residential work?
Our focus is commercial, industrial, multifamily, institutional, and municipal projects. We do not perform single-family residential service work.
Do you install grease traps and grease interceptors?
Yes. We install exterior underground grease interceptors (often called grease traps) for restaurants and commercial kitchens, including excavation, setting the interceptor, inlet and outlet piping, sample wells where required, and coordination with the plumbing contractor at the building tie-in.
Do you design utility systems or provide engineering?
No. We are a construction contractor and build to the engineer's approved plans and specifications. Design questions, capacity calculations, and permit drawings are the responsibility of the project's civil engineer. We do provide constructability feedback and value-engineering suggestions for the engineer's consideration.
Do you install fire sprinkler systems?
We install the underground fireline: fire mains, hydrant leads, fire hydrants, detector checks, fireline backflow preventers, and vaults, up to the point of connection at the riser. The building sprinkler system itself is designed and installed by a licensed fire-protection contractor.
Do you handle utility relocations for site redevelopment?
Yes. We relocate storm, sanitary, water, and fireline systems that conflict with new construction, including sequencing around live utilities, temporary service maintenance where the design allows, and coordination with the jurisdiction for shutdowns and tie-ins.
Do you perform emergency utility repairs?
We perform repair and replacement work for commercial and industrial clients — failed lines, collapsed storm pipe, damaged manholes, and similar scopes. Contact us with the location and what is known about the failure and we will respond with next steps.
Do you install underground detention systems?
Yes — pipe systems, chamber systems, and vault systems, along with outlet control structures, per the approved drainage design. Detention is a significant scope on many Houston-area sites because of regional drainage requirements.
Site Conditions
How do you deal with Houston's high groundwater?
Groundwater is common in Gulf Coast excavation. Depending on depth and soil conditions, work may require wellpoint systems, sump pumping, or other dewatering methods, planned per the geotechnical report and site conditions. Dewatering needs are one of the biggest cost and schedule variables in underground work, which is why we flag them during plan review.
What about Houston clay soils?
Expansive clays affect trench stability, bedding, backfill selection, and compaction requirements. We build per the project's geotechnical recommendations and the reviewing authority's standards, including select fill or cement-stabilized sand bedding and backfill where specified.
Can you work on occupied or operating sites?
Yes. Occupied retail centers, operating industrial facilities, and campuses require phasing, protection of existing services, off-hour shutdown windows, and tight coordination. Identify site constraints in your inquiry so the plan and pricing reflect them.
How deep can you install utilities?
Depth capability depends on soil, groundwater, and protective-system requirements rather than a fixed number. Deep sanitary work with engineered trench protection and dewatering is a routine part of our scope. Deep segments are priced from the profiles in the civil plans.
Who locates existing utilities before you dig?
We call in utility locates through Texas 811 before excavation, as required by law, and use the construction plans and any owner-provided records. Private utilities not covered by 811 may require a private locate service, which we coordinate when identified.
What happens if you hit unknown utilities or conflicts?
Unmarked or mislocated existing utilities are documented and reported to the general contractor and engineer for direction. Conflict resolution — rerouting, adjusting grade, or redesign — is an engineering decision; we price and build the approved fix.
Testing & Inspection
What testing do you perform on new utilities?
As required by the specifications and reviewing authority: low-pressure air testing, mandrel (deflection) testing, and CCTV inspection for gravity sewer; vacuum testing for manholes; hydrostatic pressure testing, flushing, and disinfection with bacteriological sampling for waterlines and firelines. Testing requirements vary by jurisdiction.
Who inspects the work?
The reviewing jurisdiction — for example a city public works inspector or a MUD's engineer representative — inspects at required hold points, alongside the owner's materials testing lab for compaction and materials. We schedule and coordinate these inspections as part of turnkey delivery.
What closeout documents do you provide?
Typical closeout includes test reports, inspection sign-offs, red-line as-built information for the engineer's record drawings, and lien waivers per the contract. Specific deliverables follow the project specifications.
What if a line fails a test?
Failed segments are diagnosed, repaired, and retested until they pass. Passing the specified tests before pavement and final acceptance is exactly why testing is sequenced where it is; it is part of our scope, not an extra.
Scheduling & Delivery
When should underground utilities be installed in the project schedule?
Wet utilities are early critical-path work — typically after mass grading and before paving, foundations in affected areas, and other underground trades that cross our alignments. Late utility packages compress everything behind them, so involve us during preconstruction.
How long does the underground utility scope take?
Duration depends on linear footage, depth, structure count, dewatering, testing windows, and inspection scheduling. We provide a scope-specific duration with our proposal once we have plans.
Do you work with the general contractor's schedule?
Yes. We sequence around grading, paving, and other trades, attend coordination meetings, and provide look-ahead schedules for our scope. Flag any hard milestone dates in your bid invitation.
Can you phase work around an operating business?
Yes — phased shutdowns, night or weekend tie-ins, temporary services where the design allows, and maintaining access are all normal parts of occupied-site utility work. These constraints should be identified during pricing.
What weather stops underground work?
Heavy rain and saturated ground stop trench work for safety and quality; standing water and unstable trench walls are not workable conditions. Houston's rainfall is a real schedule factor, and our durations account for reasonable weather allowances.
Safety
How do you protect trenches and excavations?
Excavations are protected per OSHA excavation requirements using protective systems appropriate to depth and soil — trench shields, shoring, or sloping/benching — under competent-person oversight. Trench safety is non-negotiable on our sites.
What is a competent person in excavation work?
An individual designated under OSHA requirements who can identify existing and predictable hazards in excavation work and has authority to correct them — including daily inspections of excavations, protective systems, and surrounding conditions before crews enter.
Do you participate in site-specific safety programs?
Yes. We comply with general-contractor and owner site safety requirements, orientations, and permitting systems. Identify any safety prequalification requirements (ISNetworld, Avetta, or owner programs) in your inquiry so we can address them during pricing.
Working With Us
Who do you work for — owners or general contractors?
Both. We contract directly with general contractors as a subcontractor on most projects, and directly with owners and developers on utility-led scopes such as site utility packages, detention systems, and repairs.
What areas do you serve?
The Greater Houston region — Houston and Harris County plus surrounding communities including Katy, Cypress, Pasadena, Baytown, The Woodlands, Conroe, and neighboring counties. See the service areas page for details.
Are you insured?
We carry commercial insurance appropriate to heavy-civil utility construction. Certificates of insurance with project-specific requirements are provided during contracting; send your insurance requirements with the bid documents.
How do I send you plans?
Use the Upload Civil Plans form on this site to start your inquiry and list the documents you have. Our estimating team will contact you to receive the files directly (PDF, DWG, spreadsheets, and ZIP sets are all fine).
Do you provide references?
Project references relevant to your scope are provided during the qualification and proposal process. Ask for them in your bid invitation.
What is your typical project size?
We are built for substantial underground packages on commercial, industrial, multifamily, institutional, and municipal projects — from focused single-system scopes to complete wet-utility packages. Send your scope and we will confirm fit quickly.
Houston & Jurisdictions
Which jurisdictions do you work in?
City of Houston and surrounding cities, Harris County and neighboring counties, and the many municipal utility districts (MUDs) across the region. Each authority has its own standards, inspection procedures, and acceptance requirements, and we build to the one governing your site.
What is a MUD and how does it affect my project?
A municipal utility district is a special-purpose district that provides water, sewer, and drainage service in areas outside city systems — common across suburban Houston. MUD projects involve the district's consulting engineer in plan review and inspection, which affects submittals, inspection scheduling, and acceptance.
Why is storm drainage such a big deal in Houston?
Flat terrain, intense rainfall, and regional flood-control requirements make storm sewer and detention central to nearly every Houston-area site. Drainage design is regulated by the city, counties, and the Harris County Flood Control District's criteria, and detention is required on most new development.
Do you handle permits?
Construction permits for utility work are typically pulled under the project's civil permits obtained by the owner and engineer. We handle construction-side requirements — inspections, right-of-way coordination for our operations, and traffic-control plans where our work requires them, per the approved plans.
Can you work in the public right-of-way?
Yes. Tie-ins to public mains, work in street rights-of-way, pavement cuts, and traffic control are routine parts of utility construction, performed per the governing authority's requirements and the approved traffic-control plan.
Process
What happens after I submit an inquiry?
Our estimating team reviews your scope, plans, schedule, and requirements, then contacts you to confirm scope and gather anything missing. From there we perform the takeoff and return pricing or a bid by your due date.
What is the Project Scope Builder?
An interactive tool on this site that helps you assemble your underground utility scope — systems, approximate quantities, structures, and site factors — and produces a scope summary plus a checklist of information our estimators will need. It feeds directly into a pricing inquiry.
What is a constructability review?
A preconstruction review of the civil plans from the builder's perspective: utility conflicts, connection and tie-in logistics, phasing, dewatering exposure, and details that commonly generate RFIs or change orders. Findings go to the engineer and owner for resolution before they cost money in the field.
Do you offer value engineering?
We offer value-engineering suggestions — alternate materials, alignment adjustments, or phasing changes — as proposals for the engineer of record's evaluation and approval. All changes must be approved through the project's design authority before construction.
What does 'turnkey' exclude?
Design and engineering, permits pulled by the owner/engineer, building plumbing beyond our point of connection, fire sprinkler systems beyond the riser connection point, and franchise (dry) utilities like power, gas, and telecom unless specifically included in scope. Exclusions are itemized clearly in every proposal.