Separating water meters typically costs $1,500-$6,000 for a straightforward residential project, while work that needs a new street connection or long service line can reach $10,000-$20,000 or more. The final price depends on utility rules, plumbing access, the number of units, meter placement, and whether the existing water service can be divided.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Interior plumbing split | $1,000 | $2,500 | $5,000 | Existing service has capacity and accessible piping |
| New utility meter and connection | $2,000 | $5,500 | $12,000 | Utility fees and excavation vary widely |
| Two-unit project with extensive site work | $5,000 | $10,000 | $20,000+ | May include a new service line, restoration, and inspections |
| Private submeter per unit | $300 | $700 | $1,500 | Tracks usage but is not a second utility account |
Assumptions: U.S. residential property with two units; prices are broad planning ranges and exclude unusual utility upgrades.
Typical water meter separation prices for two units
A basic separation can cost $1,500-$3,500 when the property already has separate branch piping, the main service is adequate, and the local water utility allows a second meter with limited work. A more involved project commonly runs $3,500-$8,000. Projects requiring a new tap at the water main, substantial excavation, or a larger service can exceed $10,000.
The average project is roughly $4,000-$6,000, but that figure is not a guaranteed utility rate. Some water departments charge a fixed meter or connection fee, while others require the owner to pay for engineering, a tap, a meter box, and work by an approved contractor. A plumber’s estimate may not include those charges.
For interior plumbing, a rough planning rate is $75-$150 per labor hour, or about $500-$2,500 for a limited branch-line separation. A new buried service line can add $40-$150 per linear foot, depending on depth, pipe type, paving, and excavation access. The lowest quotes generally assume an existing service can be reused and the utility charges only a modest meter fee.
What a plumber, utility, and excavator include in the quote
Ask for separate line items for plumbing, utility charges, excavation, permit work, and restoration. This helps reveal whether a low bid excludes the utility’s meter installation or assumes that the owner will arrange site work separately.
| Cost component | Typical range | What it may cover | Pricing basis |
|---|---|---|---|
| Interior plumbing | $500-$2,500 | Pipe changes, shutoff valves, reconnection, pressure testing | $75-$150 per hour |
| Meter, tap, and utility fees | $500-$4,000 | Meter, connection, inspection, or capacity charges | Utility schedule or project fee |
| Trenching and new service pipe | $1,000-$6,000 | Excavation, bedding, pipe installation, backfill | $40-$150 per linear foot |
| Permits and plans | $100-$1,500 | Plumbing permit, site plan, review, inspection | Local fee schedule |
| Surface repair and disposal | $300-$3,000 | Concrete, asphalt, landscaping, old pipe removal | Area and material affected |
Example: 12-20 plumber hours at $90-$140 per hour produces $1,080-$2,800 in plumbing labor before materials and utility fees.
Not every project needs all these items. If the meter can be installed near an accessible exterior wall and no paving is disturbed, excavation and restoration may be small or unnecessary. Utility connection fees and trenching are often the largest costs beyond the plumber’s work.
How service-line length and meter capacity change the price
The existing service’s capacity and routing determine whether the utility can add a meter without replacing the main line. A home with a 3/4-inch service may not have enough capacity for two separate dwellings, especially if both units have multiple bathrooms, laundry, or high-flow fixtures. A utility or plumbing engineer may require a 1-inch or larger service, adding pipe, excavation, and connection expense.
Distance also matters. A new 20-foot line through an open lawn is typically less expensive than a 60-foot route beneath a driveway, patio, or mature landscaping. At $40-$150 per linear foot for trenching and pipe installation, those examples imply roughly $800-$3,000 versus $2,400-$9,000 before difficult surface restoration or utility charges.
Meter location and access can alter the design. A meter pit near the property line may require a longer run back to the building; a meter mounted near the house may be disallowed by the utility. If a second unit is a basement apartment or an addition, hidden shared branches may require opening and repairing walls. Confirm meter location, service diameter, and permitted connection design before treating a plumbing bid as final.
Plumbing labor hours depend on access and pipe layout
A straightforward interior split may take one plumber and an apprentice about 6-12 hours, especially when pipes are exposed in a basement or utility room. Reworking concealed lines, moving fixtures, or separating hot-water equipment can extend the job to 16-30 hours. Labor can therefore range from about $500 to more than $4,000 before parts, depending on crew rates and the amount of repair work.
Exterior service work often needs a separate excavation crew and may take one to three working days, excluding utility scheduling and inspections. A small trench in open soil might be completed quickly, while concrete cutting, traffic control, hand digging around other utilities, or difficult access adds time. Contractors may charge a minimum mobilization fee of $300-$1,000 even for limited excavation.
Quotes should state who obtains utility locates and schedules the water shutoff. Some utilities require their own staff or an approved contractor to handle the meter and tap. If the plumber must return after the utility visit, ask whether the second trip is included or billed at a service-call rate. Labor estimates are more comparable when each bid lists crew size, hours, and return-trip charges.
Regional meter fees and excavation can shift the total
Local utility rules create larger price differences than the cost of a standard water meter alone. In lower-cost markets, a modest second-meter project may total $1,500-$4,000 if the connection is nearby and excavation is limited. In high-cost cities or areas with costly permits and street work, a similar scope can run 20%-50% more, putting the total near $4,000-$9,000.
Rural properties can also face higher bills despite lower hourly labor rates. A long distance from the water main, private road crossings, rocky soil, or a required booster or service upgrade may add thousands of dollars. Urban properties may have a short connection but incur pavement restoration, traffic-control, or right-of-way charges.
These percentages are planning comparisons, not fixed regional price indexes. The serving water department’s current fee schedule and connection requirements are more reliable than a national average. Request the utility’s written charges separately from the contractor’s price, and ask whether fees are refundable if approval is denied.
Three project examples show why quotes range so widely
A duplex with exposed basement piping and a nearby approved meter location might need 8-12 plumber hours, new shutoffs, and a modest utility charge. At $90-$130 per hour, interior labor is about $720-$1,560; with $300-$800 in materials and $500-$1,500 in utility costs, the likely total is around $1,500-$4,000.
A two-unit home needing a 30-foot exterior service line might require 12-20 plumbing hours, trenching, a meter pit, and inspection. At $50-$120 per foot for an accessible trench and service pipe, the line portion is about $1,500-$3,600. Adding $1,000-$2,800 in plumbing labor, $700-$2,000 in utility charges, and $300-$1,000 for permits or restoration brings a reasonable range to $3,500-$9,500.
A property that needs a new tap and 60 feet of line beneath a paved drive can exceed $10,000. For example, excavation and pipe at $80-$150 per foot would be $4,800-$9,000 before pavement repair, utility charges, plumbing, and plans. A combined total of $12,000-$20,000 is plausible when the utility requires a main connection and substantial restoration.
Example pricing assumes ordinary residential pipe materials, normal working hours, and no major water-main replacement.
Second utility meters versus private submeters
A separate utility meter usually creates a distinct account and lets the water department bill each unit directly. A private submeter measures a unit’s consumption behind the existing utility meter, but the property owner remains responsible for the utility account. Installed submeter pricing is commonly $300-$1,500 per unit, depending on meter type, pipe access, remote reading, and installation requirements.
Submetering can avoid a new street tap, service line, or utility meter fee, so it may cost much less than a full separation. However, local and state rules may limit how owners allocate water bills, require approved equipment, or prohibit certain tenant billing practices. It also does not create a separate utility account or fix shared plumbing branches.
Repairing or reorganizing existing plumbing may be another option when the goal is to identify leaks or control usage rather than create independent billing. A plumber may install unit shutoffs or submeters while leaving the utility connection unchanged. Compare the legal billing rules and account setup—not just the installation price—before choosing a submeter.
Lower the separation cost by controlling the service scope
Before hiring a contractor, request written guidance from the water utility on meter eligibility, allowed locations, service size, and who may perform the tap. That can prevent paying for a design that the utility will reject. Ask whether the property can use the existing main connection or whether a second tap is mandatory.
Keep the meter route short and avoid paving, retaining walls, and landscaping where a compliant alternative exists. If excavation is necessary, coordinate plumbing, meter-pit installation, and restoration in one schedule rather than paying separate mobilization fees. Completing clear access work or moving stored items out of the work area may reduce labor time, but owners should not dig until utility lines are marked.
Compare at least three itemized bids using the same scope. Check whether each includes permits, utility fees, trenching, pipe, pressure testing, backfill, surface repair, and return visits. If the building’s existing service is adequate, ask for a price that reuses it as well as a separate price for a capacity upgrade. The most useful savings decision is avoiding unnecessary line replacement while meeting the utility’s written requirements.