- Prepare Construction Site and Pour Foundation
- Complete Rough Framing
- Complete Rough Plumbing, Electrical HVAC
- Install Insulation
- Complete Drywall and Interior Fixtures, Start Exterior Finishes
- Finish Interior Trim, Install Exterior Walkways and Driveway
- Install Hard Surface Flooring, Countertops; Complete Exterior Grading
- Finish Mechanical Trims; Install Bathroom Fixtures
- Install Mirrors, Shower Doors; Finish Flooring, Exterior Landscaping
- Final Walk-Through
Apply for and Acquire Permits
Construction Crew Levels Site
Puts Up Wooden Forms for the Temporary Foundation
Footings Are Installed
Before a builder can put a shovel in the ground, the local government must approve the design and provide permits for everything from the zoning and grading (changing the contour of the land to accommodate your home and driveway) to the septic systems, home construction, electrical work, and plumbing. Once permits are acquired, physical construction can begin.
Often, site preparation and foundation work are performed by the same crew, but this may not be the case with a wooded lot. Using a backhoe and a bulldozer, the crew clears the site of rocks, debris, and trees for the house and, if applicable, the septic system. The crew levels the site puts up wooden forms to serve as a template for the foundation and digs the holes and trenches. Footings (structures where the house interfaces with the earth that supports it) are installed. If your home is going to have a well, it will be dug at this point.
If the home has a full basement, the hole is dug, the footings are formed and poured, and the foundation walls are formed and poured. If it’s slab-on-grade, the footings are dug, formed, and poured; the area between them is leveled and fitted with utility runs (e.g. plumbing drains and electrical chases), and the slab is poured.
Once the concrete is poured into the holes and trenches, it will need time to cure. During this period, there will be no activity on the construction site.
After the concrete is cured, the crew applies a waterproofing membrane to the foundation walls; installs drains, sewer, and water taps and any plumbing that needs to go into the first-floor slab or basement floor; and backfills excavated dirt into the hole around the foundation wall.
When the curing process is complete, a city inspector visits the site to make sure foundation components are up to code and installed properly. This inspection may be repeated depending on the type of foundation (slab, crawl space, or basement). Your builder will then remove the forms and begin coordinating step No. 2, the framing phase.
Floor System, Walls, Roof Systems Are Completed
Sheathing Applied to Exterior Walls, Covered with Protective Wrap
The floor systems, walls, and roof systems are completed (collectively known as the shell or skeleton of the house). Plywood or oriented strand board (OSB) sheathing is applied to the exterior walls and roof and windows and exterior doors are installed. The sheathing is then covered with a protective barrier known as a house wrap; it prevents liquid water from infiltrating the structure while allowing water vapor to escape. This reduces the likelihood of mold and wood rot.
The Following Are Installed:
Pipes and Wires
Sewer Lines and Vents
Water Supply Lines
Bathtubs, Shower Units
Ductwork for HVAC System
HVAC Vent Pipes
Once the shell is finished, siding and roofing can be installed. At the same time, the electrical and plumbing contractors start running pipes and wires through the interior walls, ceilings, and floors. Sewer lines and vents, as well as water supply lines for each fixture, are installed. Bathtubs and one-piece shower/tub units are put in place at this point because there’s more room to maneuver large, heavy objects.
Ductworks are installed for the heating, ventilation, and air conditioning (HVAC) system, and possibly the furnace. HVAC vent pipes are installed through the roof and insulation is installed in the floors, walls, and ceilings.
After the roofing goes on, the house is considered “dried in.” An electrician then installs receptacles for outlets, lights, and switches and runs wires from the breaker panel to each receptacle. Wiring for telephones, cable TV, and music systems are included in this work.
Note that HVAC ducts and plumbing are usually installed before wiring because it’s easier to run wires around pipes and ducts than vice versa.
Inspections #2, #3, #4
Rough framing, plumbing, and electrical and mechanical systems are inspected for compliance with building codes. Most likely these will be three different inspections. At the very least, the framing inspection will be conducted separately from the electrical/mechanical inspections.
At this stage, drywall (also known as plasterboard, wallboard, or gypsum board) are delivered to the building site.
Common Types of Insulation in New Homes
Foam Mineral Wool
Insulation Concrete Forms
Structural Insulated Panels
Foam Board or Ridged Foam
Insulation plays a key role in creating a more comfortable, consistent indoor climate while significantly improving a home’s energy efficiency. One of the most important qualities of insulation is its thermal performance or R-value, which indicates how well the material resists heat transfer. Most homes are insulated in all exterior walls, as well as the attic and any floors that are located above unfinished basements or crawl spaces.
The most common types of insulation used in new homes are fiberglass, cellulose, and foam. Depending on the Builder, your builder may also use mineral wool (otherwise known as rock wool or slag wool); concrete blocks; foam board or rigid foam; insulating concrete forms (ICFs); sprayed foam; and structural insulated panels (SIPs).
Blanket insulation, which comes in batts or rolls, is typical in new-home construction. So is loose-fill and blown-in insulation, which is made of fiberglass, cellulose, or mineral-wool particles. Another insulation option, liquid foam, can be sprayed, foamed-in-place, injected, or poured. While it costs more than traditional batt insulation, the liquid foam has twice the R-value per inch and can fill the smallest cavities, creating an effective air barrier.
Fiberglass and mineral-wool batts and rolls are usually installed in sidewalls, attics, floors, crawl spaces, cathedral ceilings, and basements. Manufacturers often attach a facing such as kraft paper or foil-kraft paper to act as a vapor barrier and/or air barrier. In areas where the insulation will be left exposed, such as basement walls, the batts sometimes have a special flame-resistant facing.
Drywall is Hung and Taped
Texturing is Completed
Primary Coat of Paint is Applied
Exterior Finishes (Brick, Stucco, Stone) Are Installed
Drywall is hung and taped so the seams between the boards aren’t visible, and drywall texturing (if applicable) is completed. The primer coat of paint is also applied after taping is complete. Contractors begin installing exterior finishes such as brick, stucco, stone, and siding.
Doors, Window Sills, Decorative Trim Installed
Cabinets, Vanities, Fireplace Mantles Installed
Final Coat of Paint
Interior doors, baseboards, door casings, window sills, moldings, stair balusters, and other decorative trim are installed, along with cabinets, vanities, and fireplace mantels, and surrounds. Walls get a finished coat of paint and are wallpapered where applicable.
Generally, exterior driveways, walkways, and patios are formed at this stage. Many builders prefer to wait until the end of the project before pouring the driveway because heavy equipment (such as a drywall delivery truck) can damage concrete. But some builders pour the driveway as soon as the foundation is completed so that when homeowners visit the construction site, they won’t get their shoes muddy.
Ceramic tile, vinyl, and wood flooring are installed as well as countertops. Exterior finish grading is completed to ensure proper drainage away from the home and prepare the yard for landscaping.
Light fixtures, outlets, and switches are installed and the electrical panel is completed. HVAC equipment is installed and registers completed. Sinks, toilets, and faucets are put in place.
Mirrors, shower doors, and carpeting are installed and final cleanup takes place. Trees, shrubs, and grass are planted and other exterior landscaping is completed.
A building-code official completes a final inspection and issues a certificate of occupancy. If any defects are found during this inspection, a follow-up inspection may be scheduled to ensure that they’ve been corrected.
This is where you spot items that need to be corrected or adjusted!
Your builder will walk you through your new home to acquaint you with its features and the operation of various systems and components and explain your responsibilities for maintenance and upkeep, as well as warranty coverage and procedures. This is often referred to as a pre-settlement walkthrough. It’s also an opportunity to spot items that need to be corrected or adjusted, so be attentive and observant. Examine the surfaces of countertops, fixtures, floors, and walls for possible damage. Sometimes disputes arise because the homeowner discovers a gouge in a countertop after move-in and there’s no way to prove whether it was caused by the builder’s crew or the homeowner’s movers.
After learning about the construction process, it’s time to know more about the Green Built Homes on the next page.