What Does It Cost To Put 4 Bathroom Septic?


On average, the cost of installing a new septic tank system is $3,900. The price ranges from $1,500 to $5,000 for a typical 1,250-gallon tank, which is an ideal size for a three- or four-bedroom home. This cost is inclusive of the tank itself, which costs $600 to $2,100 or more, depending on the type.


The cost to supply and install a Septic System with a Sand Filter for an average 4 bedroom home ranges between $15,000 and $20,000. We will come out to service your system after it has been operating for 6 months.

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Septic Tank Installation Cost UK – Septic Tank Installation

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Frequently Asked Questions

How much does a 4 bedroom septic system cost?

Septic Tank Cost by Size

Tank Gallon SizeHouse SizeTank Cost
750 2 bedrooms $700 - $1,200
1,000 3 - 4 bedrooms $900 - $1,500
1,200 5 - 6 bedrooms $1,200 - $1,600
1,500 6 - 7 bedrooms or small duplex $1,500 - $2,500

How much does it cost to install a septic system yourself?

Septic Tank System Cost

National Average Cost$3,918
Minimum Cost $1,500
Maximum Cost $15,000
Average Range $3,280 to $5,040

What is the cheapest septic system to put in?

Types of Septic Tank Systems These conventional septic systems are usually the most affordable, with an average cost of around $3,000. An alternative septic system collects sewage in the same way as a conventional system, but it breaks down the sewage in the tank using oxygen instead of naturally occurring bacteria.

Which is better concrete or plastic septic tank?

Very durable: Concrete septic tanks are much more durable than their plastic counterparts. ... Driving over the soil where a concrete tank was buried will not affect it. Low maintenance: Because they're so resilient, concrete septic tanks tend not to need as much maintenance as plastic ones.

How much does it cost to install a septic system?

A basic septic system for a 3-bedroom home will cost $3,918 on average with most homeowners spending between $3,280 and $5,040. When you install a system with two alternating pumps, expect to spend $9,500 to $15,000. Cost Factors To Install Installing a septic system is expensive because of the amount of labor involved in doing it correctly.

How much does a septic tank and leach field cost?

A complete septic system, including a leach field, tank and piping costs $10,000 to $25,000. Installing a leach field costs $5,000 to $20,000, depending on the type. You’ll need all the components of a system.

How much does a septic tank riser cost?

Costs will vary according to the size and design of the system. For reference, 100 feet of 4-inch perforated PVC piping costs $65 to $80. A septic tank riser allows above-ground access to your tank and can considerably reduce the cost of maintaining your system.

How much does it cost to replace a septic tank baffle?

The baffle is a part of the septic tank that prevents scum from building up in the inlets or outlet pipe. Replacing a baffle can help save the tank, saving the customer thousands. The replacement price falls between $300 and $500.

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