Excavation & Site Work: questions, answered with sources
Each answer cites the public sources it was checked against, with the date it checked them. Jobs that need a licensed pro in Virginia say so, and explain the job instead of teaching it.
Demolition
4 answers
What does demolishing a house involve?
Demolishing a house in Virginia means a permit, a utility locate through Virginia 811, a check for asbestos and other hazards, utility disconnection, the teardown, debris hauling and recycling, then removing the foundation and grading the lot. It is licensed, permitted work that you should leave to a contractor and read the quote closely.
How much does it cost to demolish a house in Virginia?
There is no single Virginia price. We found no dated primary-source price list, so we do not quote per-square-foot numbers. The permit is the small part, for example $184.00 in Richmond (2% surcharge extra) on its 2024 form. The rest depends on size, access, asbestos, debris disposal, the foundation and grading, so get itemized written quotes.
Do I need a permit to demolish a building in Virginia?
Yes. Virginia's building code requires a permit from the local building official before demolition of a building or structure begins. Only small detached sheds and similar structures of 256 square feet or less are exempt. Expect asbestos paperwork, proof of a contractor licence or a written statement, a fee set by your locality, and a locate request to Virginia 811.
Does an old house need an asbestos survey before demolition in Virginia?
Not by state law, in most cases. Virginia's asbestos inspection rule for buildings first permitted before 1985 does not apply to single-family homes or housing with four or fewer units, unless the demolition is for commercial or public development. Your locality may still ask for asbestos paperwork, and a survey is the only way to know what is in the walls, floors and pipes.
Drainage & French Drains
5 answers
How does a French drain work?
A French drain is a trench of gravel with a perforated pipe in it, usually wrapped in landscape fabric. Water in soggy ground seeps into the gravel, enters the pipe through its holes and flows downhill underground to an outlet that can take it, such as lower open ground, a pop-up emitter or a dry well. It only works if the pipe keeps falling and the outlet is suitable.
How much does a French drain cost in Virginia?
There is no reliable statewide price for a French drain: each one is priced by its length and depth, the soil and rock, what is in the way, and above all the outlet. Get two or three itemized written quotes. In Fairfax County, a French drain system is on a flood program that, when we checked on October 27, 2026, reimbursed 50% of costs up to $5,000.
Who do I call for a wet yard, a landscaper or a drainage contractor?
It depends on the cause and the size of the fix. A landscaper can usually regrade a small low spot, amend soil or plant a wet area. Buried drains, long trenches and dry wells call for a drainage or excavation contractor. A yard that stays wet in dry weather may be a leak for a plumber or the water utility. Either way, hire a Virginia-licensed contractor.
Why does my yard flood when it rains?
Most yards flood for one of four reasons: the ground is graded so water collects in low spots or runs toward the house, the soil is too compacted or clay-heavy to soak water in, roof and neighboring runoff arrive in one place, or groundwater sits close to the surface. A yard wet in dry weather may have a leak. Puddles gone within a day or two are normal.
Do French drains need maintenance?
Yes, though not much. Most of the work is keeping leaves and silt out: clearing catch basin grates and the outlet, keeping gutters clean upstream, and watching the drain during a heavy rain to see that water reaches the outlet. Clogging is the most common problem with gravel drains. A drain that floods, sinks or stops discharging needs a contractor to inspect it.
Erosion Control
3 answers
How do I stop soil erosion on a slope?
Find where the water comes from and slow it first: gutters, downspouts and runoff from above are the usual cause. Then cover the bare soil with seed and straw mulch, and on a steep slope hold the mulch down with netting, matting or a tackifier. Big gullies, slopes near a stream or a house, and large disturbed areas are jobs for a licensed contractor.
How much does erosion control cost in Virginia?
There is no single Virginia price. EPA's fact sheets, citing 2019 and 2020 national cost data and checked on October 27, 2026, put hydroseeding at about $50 to $100 per thousand square feet and sod at $25 to $100 per square yard installed. Your quote depends on slope, access, the cause of the water, and whether the job needs a plan or permit, so get itemized written bids.
Who should I call about a washing-out hillside?
Call a Virginia-licensed contractor with a landscape service or excavation specialty for a washing-out hillside on your own land. If a new house is under bond, call the builder first. Your county or city engineer or local soil and water conservation district can tell you about permits and cost-share. Call the utility if soil is moving near a pipe or wire.
Excavation & Grading
5 answers
How is a yard regraded so water drains away from the house?
A contractor regrades a yard by reshaping the soil so the ground falls away from the foundation on every side, using compacted clay-rich fill where needed, then sending the water to an outlet where it can soak in or drain without harming neighbors. The Northern Virginia district's guideline is at least a 5% grade for ten feet, a drop of six inches. Large jobs may need erosion-control permits.
How much does yard grading cost in Virginia?
There is no reliable statewide price for yard grading, and no Virginia source we found publishes a dated one. The cost depends on how much soil must move, whether clay-rich fill is hauled in and compacted, machine access, what must be cleared, where the water ends up, and any permit. Get two or three itemized written quotes for the same scope.
Do I need to call 811 before digging in Virginia?
Yes. Virginia law says no one may begin any excavation without first submitting a locate request to Virginia 811, and the utility's own guidance says that includes homeowners planting, fencing or installing a mailbox. It is free, you ask at least 3 working days ahead, and the markings last 15 working days. On a hired job, your contractor must make the request.
Why is water running toward my house instead of away from it?
Water runs toward a house when the ground beside it tilts toward the foundation, usually from soil that settled after the walls were backfilled, a low spot, or grading that was never right. Roof runoff and compacted soil add to it. The Northern Virginia district wants at least a six-inch drop over ten feet away from the walls; a licensed pro can regrade it.
How do I keep my yard's grade sloping away from the house?
Keep a yard sloping away from the house by checking it after heavy rain, cleaning gutters at least once a year, fixing small dips near downspouts early and keeping soil and beds below the siding. The Northern Virginia district recommends at least a six-inch drop over ten feet. A sunken strip along a wall, standing water or a damp basement is a job for a licensed pro.
Foundation & Footings
5 answers
What does pouring footings for a house involve?
Pouring footings means getting a building permit, digging trenches to the depth the plans and soil call for, setting forms and steel reinforcing, passing the building official's footing inspection, and only then placing concrete. In Virginia the inspection comes before the pour, and the work belongs to a licensed contractor, not a weekend project.
How much does a foundation cost for a new house in Virginia?
There is no honest single Virginia price for a new-house foundation, because it swings with the foundation type, the soil, the depth, the site and the permit. The reliable way to a number is itemized written quotes for your plans and lot. Ask what is included, who handles the soils report and inspections, and how changes are priced.
Who should I hire to check a cracked foundation?
Hire a licensed professional engineer experienced in soils and foundations, ideally a geotechnical engineer, to find the cause before anyone sells you a repair. If there is significant structural damage, that engineer may advise bringing in a structural engineer. Hire a licensed contractor to do the repair only once the engineer's design is in hand.
What do cracks in a foundation mean?
Many hairline cracks are harmless settlement. Cracks that appear years after construction, open and close with the seasons, follow mortar lines, grow, or come with a wall bowing inward point to soil movement or water pressure. Photograph and measure them, then have a licensed engineer find the cause before anyone patches the wall or sells you a repair.
How do I keep water away from my foundation?
Ground around the house should slope away from the walls, ideally at least a 5% grade for ten feet, a drop of about six inches. Gutters and downspouts should carry roof water at least ten feet from the house, and large trees should stand well back. Regrading and buried drains are contractor jobs, so inspect, then get written quotes.
Gravel Driveways
5 answers
How do I fix potholes in a gravel driveway?
Loosen the hole to at least 1 inch below its bottom, mix the stone with matching crushed gravel that has fines, refill in thin layers, and compact each layer. Reshape the drive so water runs off. Potholes come from standing water, so fix the drainage or they return.
How much does a gravel driveway cost in Virginia?
There is no reliable statewide price for a gravel driveway. The cost is built from the drive's length, width and depth, the stone, the ground underneath, drainage and the entrance to the road. Get two or three itemized written quotes, check each bidder's DPOR licence, and keep any deposit to 10% or $1,000, whichever is less.
What size gravel should I use for my driveway?
Use two stones: a coarser, cleaner crushed stone for the base, and for the top layer a crushed blend with a 3/4 to 1 inch top size, sand and a small share of fines so it binds. Skip single-size round stone such as pea gravel on the surface. Write the stone, top size and depth for each layer into the quote.
Why does my gravel driveway keep washing out?
Water is running down the drive instead of off it. The usual causes are a lost crown, a ridge of displaced stone along the edge, a blocked ditch or culvert, and runoff from a roof or slope. Restore the crown, open the edges, clear the drainage, then replace the stone.
How often should a gravel driveway be regraded?
There is no fixed interval. Regrade when the crown has worn flat, ruts, holes or edge ridges appear, or water runs down the tracks, and expect a bigger rebuild every so often. Spring is usually best, while the gravel is damp. Heavy use or wet ground means sooner.
Land Clearing
4 answers
What does clearing a wooded lot involve?
Clearing a wooded lot usually means selling or cutting the timber, dealing with the stumps and brush, protecting the soil, and getting the paperwork right first: a Virginia 811 locate before any digging, and erosion and stormwater approval when the cleared area is large enough. How the stumps come out shapes the cost and how much topsoil you keep.
How much does land clearing cost per acre in Virginia?
There is no current statewide price per acre. The dated Virginia figure is old: a 2008 Virginia Tech research project found $850 an acre for mulching against $1,650 for conventional clearing, and an acre of mulching may take one to eight hours. Timber value, stumps, terrain, topsoil and permits move the price, so compare itemized written quotes.
Do I need a permit to clear land in Virginia?
Often, yes. Virginia's erosion law applies once clearing, grading or digging disturbs 10,000 square feet, or 2,500 square feet in a Chesapeake Bay Preservation Area, and the work needs land-disturbance approval first. Bona fide farming is exempt, and so is a timber harvest where the land is reforested or turned to pasture. Any digging also needs a Virginia 811 locate, and burning brush has its own rules.
How do I keep cleared land from growing back?
Give the ground something else to be. Cleared land in Virginia returns to brush because hardwood stumps resprout and seeds blow in, so the lasting fix is a thick permanent cover of grass or pasture, kept up by mowing or grazing, with stump sprouts and invasive plants dealt with early by a licensed contractor and, for any herbicide, a certified applicator.
Ponds & Waterways
5 answers
How is a backyard pond built?
A backyard pond is built by excavating a basin, forming an earthen embankment where needed, and installing a spillway that safely passes storm flow. In Virginia the dam, any stream or wetland impact and land disturbance can each bring permits, so a licensed excavation contractor and, for larger ponds, an engineer should plan it first.
How much does it cost to build a pond in Virginia?
There is no single Virginia price for a pond, and we did not find a dated primary-source figure to quote. Cost depends on how much soil moves, how well the ground holds water, the dam and spillway design, permits, site access and finish work. Get at least three written bids that use the same specifications.
Do I need a permit to build a pond in Virginia?
It depends on the pond. Every excavation needs an 811 locate request first. A locality may require a land-disturbance permit, a pond with a large enough embankment falls under Virginia's dam-safety rules, and a pond in a stream or wetland can need state and federal permits. Ask your county or city engineer before any digging.
Why is my pond losing water?
Every pond drops from evaporation, seepage and use, and a well-built one may lose about an inch a month to seepage. A pond that falls faster, or has wet spots and cattails below the dam, is probably leaking through the soil, a pipe, burrows or the dam. A contractor can find the spot, which decides the repair.
How do I keep a pond from turning green?
Control the nutrients that feed algae: limit fertilizer, manage manure and septic runoff, and keep a vegetated buffer around the pond. Chemical treatments clear algae briefly but add nutrients as the dead plants decay. If the pond keeps turning green, a licensed excavation contractor can look at the shoreline and depth.
Septic Pumping
5 answers
What happens when a septic tank is pumped?
A permitted pumper finds and opens the tank, then uses a vacuum truck to take out the floating scum and the sludge that has settled on the bottom. Only the tank is pumped, not the drainfield. While the lid is off, a good pumper checks for leaks, worn baffles and roots, records the sludge and scum levels, and hauls the septage to an approved disposal site.
How much does septic pumping cost in Virginia?
There is no set statewide price, and charges vary considerably between septic services. What you pay depends mostly on tank size, how hard the tank is to find and reach, whether it must be dug up, and any repairs found. Get several written estimates that say what is included, and check for local cost-share programs that repay part of a pump-out.
Does Virginia require septic tanks to be pumped?
Not everywhere. In Chesapeake Bay Preservation Areas, which cover parts of Tidewater Virginia, septic systems must be pumped out at least once every five years, though some localities accept an inspection or a filter instead. Alternative systems anywhere in the state need a licensed operator visit at least yearly. Elsewhere pumping is recommended every three to five years, and local or HOA rules may add requirements.
Why does my septic tank fill up so fast?
A working septic tank is always full of liquid up to its outlet, so a tank that looks full soon after pumping is normal. A tank that truly needs pumping too often usually has too many solids going in, too much water going through, or a drainfield that is no longer taking effluent. Liquid standing above the outlet points to the drainfield, not the tank.
How often should a septic tank be pumped?
Most household septic tanks in Virginia need pumping every three to five years, but the right interval depends on tank size, how many people live in the house, how much water you use and how many solids go down the drains. Have the tank checked at least every three years, alternative systems every year, and pump when the measured sludge and scum say so.
Septic Systems
5 answers
How does a septic system work?
Wastewater leaves the house through one pipe into a buried, watertight septic tank. There, solids sink as sludge, grease floats as scum, and bacteria break some of the solids down. The liquid in the middle flows on to a drainfield, where the soil filters and treats it before it reaches groundwater. Alternative systems add pumps, filters or treatment units where the soil is not suitable.
How much does a new septic system cost in Virginia?
There is no published statewide price for a new septic system in Virginia, because the soil decides the design. A conventional gravity system is usually the cheapest kind, and alternative systems cost more to build and need yearly service. Budget for the soil evaluation and design, the health department permit fee, the licensed installer's price, the designer's inspection and, for alternative systems, an operator contract.
Who designs and installs septic systems in Virginia?
In Virginia a licensed onsite soil evaluator, or a professional engineer working with one, evaluates the site and designs the system. The local health department reviews the design and issues the construction permit. A DPOR-licensed onsite sewage system installer builds it, the designer inspects the installation, and alternative systems then need a licensed operator to visit at least once a year.
What are the signs of a failing septic system?
The clearest signs are sewage backing up into the lowest drains, slow drains and gurgling across the house, standing water or soggy ground over the tank or drainfield, sewage smells outside, and a strip of unusually green grass over the field in dry weather. Contaminated well water or an alarm on a pumped system are warnings too. Call a licensed septic professional to find the cause.
What should I never put down the drain with a septic system?
Only human waste and toilet paper belong in the toilet. Keep wipes, even ones labelled flushable, diapers, feminine products, paper towels, cat litter, cigarette butts, dental floss and medicines out of the system, along with cooking grease, coffee grounds and food scraps. Never pour paint, solvents, gasoline, oil, pesticides, antifreeze or harsh drain cleaners down any drain, because they kill the bacteria the system depends on.
Trenching & Utilities
4 answers
What does trenching for a utility line involve?
Trenching a utility line means getting lines marked through Virginia 811, planning a route around them, digging to the depth the line needs with hand digging near marked lines, protecting the trench, laying the line, inspecting it, then backfilling and restoring. It is licensed work: a permit, a qualified contractor and a licensed electrician for any wiring are usually involved.
How much does trenching cost per foot in Virginia?
There is no single Virginia price per foot, and we found no primary source that dates one, so no number is quoted here. Cost depends on length, depth, soil, access, the surface crossed, the line installed, the permit and locating private lines. Get at least three itemized written bids, a deposit of 10% or $1,000, whichever is less, and a contractor with the right Virginia licence.
Who is responsible for marking underground utilities in Virginia?
The utilities mark their own lines, but only after the excavator requests it. Under Virginia law the person digging must submit a locate request to Virginia 811, which is free; Virginia 811 asks for it at least 3 working days ahead. On a hired job that is your contractor, so confirm it. Utilities do not mark private lines such as the water line from the meter to the house.
How do I find where an underground line runs on my property?
Request free markings from Virginia 811 at least 3 working days before any digging; utilities then mark their own lines up to your gas, electric and water meters, the telecom box and the sewer cleanout. Lines past those points, such as to a detached garage, a septic tank or a propane tank, are private, so check permit and as-built records or hire a private utility locator.