Building a house works in a fixed sequence: you buy and permit the land, line up a construction loan, sign a contract with a builder, prepare the site and pour a foundation, frame the structure, run plumbing, electrical, and HVAC through open walls, close those walls with insulation and drywall, finish the interior, and pass a final inspection that produces the certificate of occupancy allowing you to move in. Production homes average roughly seven to eight months from groundbreaking to move-in. Custom builds on raw land often take more than a year. Each phase has its own inspection, its own payment, and its own ways to go wrong, and knowing the order gives you real control over cost and timing.
Planning, Design, and Permits
It starts with the lot. Buying buildable land uses a standard purchase agreement and a title search confirming the property is free of liens or ownership disputes, with title insurance as a standard closing cost. Once the lot is yours, confirm it’s zoned for the type of home you want. Zoning rules control building height, how much of the lot the structure can cover, and setback distances from property lines. If your plans don’t fit, you can apply for a variance, which means a public hearing, extra fees, and no guarantee of approval.
An architect or residential designer produces the construction drawings: floor plans, structural sections, and elevations with every dimension the builder and inspectors need. Local amendments to the governing residential code vary by jurisdiction, so your designer needs to know your area’s specific requirements.
The building permit application goes to your municipal building department or county planning office. You’ll supply your contact information, the contractor’s license number, the property’s legal description, total square footage, estimated construction value, and a site plan showing where the structure sits on the lot. Filing fees commonly run between 0.5% and 2% of the project’s estimated value. Some jurisdictions also charge impact fees for schools, roads, parks, and utility infrastructure, which can add thousands upfront. The permit review confirms your plans meet fire safety, structural, and energy efficiency standards. No physical work starts until the permit is approved and posted on site.
Paying for the Build
Construction costs for a new home generally fall between $150 and $300 per square foot, with wide variation driven by location, finishes, and site conditions. A 2,000-square-foot home might run anywhere from $300,000 to $600,000 before land. A realistic budget also accounts for permit fees, impact fees, survey and soil testing, utility connections, landscaping, and a contingency reserve. Most experienced builders recommend setting aside 10% to 15% of the construction budget for problems you haven’t thought of yet.
Unless you’re paying cash, you’ll need a construction loan, which works differently from a standard mortgage. Instead of receiving the full loan at closing, the lender releases funds in stages called draws, tied to construction milestones. A typical draw schedule has five or six releases: roughly 20% for foundation and site work, 25% for framing and the roof, 20% for mechanical rough-ins, 20% for drywall and interior finishes, and 15% for final completion. Before each draw, the lender sends an inspector to verify the milestone is genuinely done. You pay interest only on the amount disbursed so far, which keeps payments lower while the house is being built.
When construction finishes, the loan converts to a permanent mortgage. Fannie Mae supports this through a single-closing transaction, where the construction loan and permanent mortgage are documented at once, or a two-closing transaction, where you close separately on each.1Fannie Mae. Construction-to-Permanent Financing A single close saves a round of closing costs. Two closes let you shop permanent rates later but mean two sets of fees. Either way, the permanent mortgage doesn’t begin until the home is complete and you’ve received a certificate of occupancy.
Signing the Contract and Protecting Yourself
Your contract with the general contractor is the most important document in the project, and the type you sign decides who absorbs cost overruns. A fixed-price contract sets the total cost upfront and puts overrun risk on the builder. A cost-plus contract reimburses the builder for actual expenses plus an agreed fee or percentage, which shifts overrun risk to you. If you go cost-plus, insist on a guaranteed maximum price so your exposure has a ceiling.
Change orders are the leading source of budget creep. Any time you alter the original plans after construction starts, whether upgrading countertops, moving a wall, or responding to an unexpected site condition, the contractor issues a formal change order documenting the revised scope, added cost, and schedule impact. Every change order should be signed before the work happens. Builders who proceed on verbal instructions and settle up later create disputes that can stall the whole project.
Builders risk insurance covers the structure under construction, materials on site, and supplies in transit against fire, theft, vandalism, and wind damage. A standard homeowners policy doesn’t adequately protect a half-built house. Policies typically cost 1% to 5% of total project value. Your contractor likely carries general liability and workers’ compensation coverage, but builders risk protects the physical project itself, so confirm who’s responsible for it before ground is broken.
Mechanics liens are a risk most first-time builders don’t see coming. If your general contractor fails to pay a subcontractor or materials supplier, that unpaid party can file a lien against your property, even though you already paid the general contractor in full. The protection is lien waivers. With each payment, collect a signed waiver from the general contractor and from every subcontractor who worked during that pay period, confirming they’ve been paid and surrendering their right to lien for that amount. Skipping this is how owners pay for the same work twice.
Site Work and Foundation
Before anyone pours concrete, the site needs professional evaluation. A boundary survey confirms exactly where your property lines fall, and a geotechnical report analyzes soil composition, bearing capacity, and water table depth. That soil data directly shapes foundation design: expansive clay calls for a different approach than well-drained sandy soil. If the lot isn’t on municipal sewer, you’ll also need a percolation test to determine whether the soil can support a septic system. These tests together run from several hundred dollars to several thousand, depending on lot size and complexity.
Site clearing removes trees, rocks, and organic material to create a stable work surface. Excavation follows, carving the ground to the depth and shape the foundation requires. The three common options are a concrete slab poured directly on grade, a raised crawlspace, or a full basement. The right choice depends on soil, climate, water table, and budget. Any poured-concrete foundation needs time to cure, reaching most of its design strength within 28 days. Waterproofing membranes and perimeter drainage keep groundwater out of the lower levels.
The first major inspection happens here. A municipal inspector checks the foundation’s depth, reinforcement, and overall compliance with the approved plans before the builder is cleared to frame. A foundation that fails inspection means rework, delays, and possibly a new engineering review.
Framing and Drying In
Framing gives the house its skeleton. Floor joists carry the subfloor, wall studs rise from the foundation plate, and roof rafters complete the structure overhead. Structural headers span every window and door opening to redistribute the weight above. In a few weeks the house goes from a flat slab to something that looks like a home.
The goal of framing is to get the structure dried in, meaning weather-tight. Once the roof sheathing, exterior house wrap, and windows and doors are in, rain and wind can’t damage the interior. The house wrap acts as a moisture barrier that lets water vapor escape from inside while blocking liquid water from getting in. Reaching this milestone lets interior materials be stored on site and delicate work begin regardless of weather.
A framing inspection follows, verifying that wall, ceiling, and floor framing is complete with proper blocking, bracing, and fire stopping. On custom homes, engineers review the framing to confirm it handles local wind loads and seismic requirements in the building code. The lender typically sends an inspector around now to approve the next draw.
Mechanical Rough-Ins
With walls open and accessible, the mechanical trades work at once. HVAC technicians install ductwork and refrigerant lines. Plumbers route supply pipes and drain lines to every kitchen, bathroom, and laundry location. Electricians pull wiring to junction boxes for outlets, switches, lighting, and major appliances. All residential electrical work must comply with the National Electrical Code, which serves as the foundational standard for safe electrical design and installation across all 50 states.2National Fire Protection Association. Understanding NFPA 70, National Electrical Code
The rough-in inspection is arguably the most critical checkpoint in the entire build. An inspector examines all plumbing, electrical, and HVAC work while it’s still visible. Once this inspection passes, those systems get sealed behind walls and ceilings for the life of the home. A failed rough-in means tearing into framing that may already be partially closed, so experienced contractors self-inspect before calling for the official review.
If your lot has no municipal water and sewer, utility connections happen during or shortly after rough-in. Tapping a public water line requires an application, utility review, and tap-in fees before any connection work begins. For properties outside municipal service, a private well and septic system replace those public connections, adding significant cost. Septic installation alone typically runs from $3,000 for a basic anaerobic system to $20,000 for an aerobic one, not counting excavation or soil testing.
Insulation, Drywall, and Interior Finishing
Insulation goes in after rough-in passes. Batts or blown material fill exterior wall cavities, attic floors, and any other areas where conditioned space meets unconditioned space. Modern energy codes have pushed insulation requirements higher over recent code cycles, with tighter air-sealing standards, improved window performance, and in some jurisdictions, provisions for electric-vehicle-ready wiring and solar-ready roof zones. An insulation inspection confirms everything is installed correctly before the walls close.
Drywall then turns the exposed skeleton into recognizable rooms. Panels fasten to wall studs and ceiling joists, seams are taped and finished with joint compound, and surfaces are sanded smooth for paint. This step hides the mechanical systems permanently, which is why every rough-in inspection must pass first.
Interior finishing is the longest and most detail-intensive phase. Flooring goes down first in most sequences: hardwood, tile, or carpet over the subfloor. Kitchen and bathroom cabinets are mounted, followed by countertops and plumbing fixtures. Trim work wraps up the visible construction: baseboards, door casings, and any crown molding. Light fixtures, outlet covers, and appliances are last. Each trade works in a specific order, and scheduling conflicts here are a common source of delay in the final stretch.
Final Inspection and Certificate of Occupancy
The final building inspection is a comprehensive review of the finished home. The inspector verifies that all electrical, plumbing, HVAC, and structural components are safe and functional, that fire safety systems work, and that the home matches the approved plans. Every earlier inspection must have been passed and documented before the final can be scheduled. If the property meets all code requirements, the local building department issues the certificate of occupancy.
The certificate of occupancy is the legal document authorizing the building to be used as a residence. Without it, you cannot legally move in, and in most jurisdictions the home cannot be sold or financed with a permanent mortgage. Occupying a building without a CO can result in fines, and in some areas utilities can be disconnected. If the home is substantially complete but minor items remain, some jurisdictions issue a temporary certificate of occupancy, typically valid for around 60 days, giving the builder a defined window to finish punch-list work before the temporary authorization expires.
Before the final payment to the builder, walk the home with your contractor and a detailed eye. Note every scratch, misaligned cabinet, paint drip, and sticky door on a formal punch list. The builder is contractually obligated to correct these items before final payment is released. Most lenders also retain 5% to 10% of the construction loan for 30 to 60 days after completion specifically to ensure punch-list work gets done. Don’t waive that retention under pressure to close out the loan early.
Warranties After You Move In
New homes typically come with a builder’s warranty, and coverage follows a standard pattern. Workmanship and materials on most components, including siding, drywall, doors, and paint, are covered for one year. Mechanical systems including HVAC, plumbing, and electrical are generally covered for two years. Major structural defects, like a failing foundation or a roof at risk of collapse, may carry coverage for up to ten years.3Consumer Advice (FTC). Warranties for New Homes
These timelines matter because they start running at substantial completion or the date you move in, not when you notice a problem. A plumbing leak that shows up 18 months after move-in is still within the two-year mechanical window. The same leak at 25 months is not. Document everything during the first year especially, since that’s when cosmetic and workmanship defects surface and the coverage window is shortest. Beyond the builder’s express warranty, most states recognize an implied warranty of habitability for new construction, giving you additional legal recourse if the home has serious defects that make it unsafe or unlivable.
Once the CO is recorded and the punch list is resolved, the property’s status officially changes from a construction site to a legal residence. Your construction loan converts to a permanent mortgage, and you can secure a standard homeowners policy for the occupied home. The builders risk policy expires at this point. Keep your approved plans, inspection records, warranty documents, and every lien waiver in a permanent file. You’ll need them if you sell the home, file a warranty claim, or plan a future renovation that requires its own permits.