- 411Contractor.com
 - Referring pre-screened, licensed contractors that are bonded and insured for industrial, commercial, residential and custom home projects. - AEC InfoCenter
- Architecture, engineering and construction products, resources and links.
 BCA Contractors Registry
- Directory of registered building and construction businesses.- Blue Book of Building and Construction, The
- Official site for The Blue Book of Building and Construction featuring an online directory of construction industry resources. Includes a feature allowing building contractors to list their companies in a regional print-based registry.
- Builder's Data
- Searchable data base.
- Builders-Search
- Directory of homebuilders searchable by state, zip code, and city. Also offers web design services.
- BuilderSpace.com
- Directory of building design, manufacturing, and construction related businesses. Information and links to company sites provided.
- BuilderWeb (6)
- Building Industry Exchange
- Search index and directory of building industry businesses, people, publications, products, and employment opportunities worldwide, including construction, engineering, architecture, real estate, and others.
- Building Trades Directory
- Nationwide listings of architects, contractors, and tradesmen. Online and offline listings.
- BuildingOnline
- Directory to products, contractors, retailers, architects, and magazines and other media.
- buildingweb inc
- Offering Internet marketing for the construction industry. Information about architects, engineers, product manufacturers, contractors, home builders, etc.
- Buildsafe.org
- Hosts for construction and worker safety sites from around the world.
- Cmldir.com
- Database of manufacturers of equipment and supplies for the construction, building, mining, and quarrying industries worldwide.
- Construction Resources
- Offers information on the latest building products, software, contests, books, and special offers.
- Construction Site, The
- Lists contractors, architects, engineers, builders, construction equipment, materials, and supplies.
- Construction.com
- Source commercial construction information, with news, analysis, job listings, and searchable directories for designers and constructors.
- ConstructionWeblinks.com
- Web portal indexed by industry topics, organisations, and reference resources.
- Contractor Resource
- Improvement and construction site with licensed contractor directory.
- Contractors Zone
- Offers links to contractors and related businesses, associations and trade organisations, newspapers, bookstore, jobs and more.
- Contractors.com
- Directory of contractors featuring company information, customer testimonials, links, and local remodeling cost estimators.
- ContractorsOffice.Net Corp.
- Industry portal offering e-mail, calendars, jobs, news, software, and more.
- DCDHome.com
- Designed to introduce owners and buyers of resort area properties to their region's design, construction, decor, and real estate professionals.
- Drawingroom.net
- Provides services to share and collaborate with drawings and image documents over the web.
- FindContractorBids.com
- Request construction estimates and contractor bids from local contractors.
- Findoha
- Contractor directory along with industry articles and tips on home improvement. Matches homeowners with service professionals of every speciality.
- GetBuild.com
- Search for or list construction projects and companies across the country. Free online marketplace where projects meet contractors.
- GetVendors
- Offers community recommended service professional listings for home repair, auto repair, real estate, wedding services, and all household services.
- Great Possibilities.com
- Offers classifieds, forums, chat rooms, newsletter, and more.
- Home Builder Showroom
- Provides builders with a private online showroom customised for each builder to display standards and extras.
- Home Improvement Web, The
- Directory of contractors, real estate services, retailers, manufacturers, information resources, and regional sites for Canada, U.K., and the U.S.
- HomeBlue Contractor Network
- Provides home improvement information and matches consumers with pre-screened contractors, remodelers, architects, and home services. Also sells local directory listings to businesses.
- HousingZone
- Residential building portal for builders, remodelers, homeowners, contractors, architects, and manufacturers.
- Just-Contractors.com
- Offers a directory of contractors including landscape, pool, concrete, hvac, painting, and fence and deck.
- National Contractor Referral Service
- Offers contractor directories for California, Nevada, and Arizona as well as builder's books, study materials, state applications, and more.
- National Contractors Online
- Matches upcoming construction projects with contractors through an online database.
- Prism Network
- Offers a network of qualified contractors.
- Public Works Online
- Business listings and industry information relating to the construction and engineering of public works.
- ToolBase Services
- Housing industry's resource for technical information on building products, materials, new technologies, business management, and housing systems.
- Upscale Remodeler
- Send in your information to be matched wtih local contractors for a given job, from kitchen remodeling to landscaping and hot tub installation.
- US Contractors
- Online directory of local contractors.
- WantASub.com
- Contractor referral service for the building trades.
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