You can do a search for your type of work by clicking the blue Lookup Business Codes option. And if you don't see anything that matches, just put in 999999, which is miscellaneous. It's not something the IRS needs nor will it have an affect on your return.
You can do a quick search by typing in either "flooring" or "construction" and see which results you get. Some of the ones that are related to your line of work are:
- Flooring contractors (238330)
- Lumber & other construction materials (423300)
"Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers, Brick, Stone, and Related Construction Material Merchant Wholesalers, Roofing, Siding, and Insulation Material Merchant Wholesalers, Other Construction Material Merchant Wholesalers, Photographic Equipment and Supplies Merchant Wholesalers, Office Equipment Merchant Wholesalers, Computer and Computer Peripheral Equipment and Software Merchant Wholesalers, Other Commercial Equipment Merchant Wholesalers, Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers, Ophthalmic Goods Merchant Wholesalers, Other Professional Equipment and Supplies Merchant Wholesalers"
- Residential building construction (236100)
New Single-Family Housing Construction (except Operative Builders); New Multifamily Housing Construction (except Operative Builders);
New Housing Operative Builders; Residential Remodelers
- Nonresidential building construction (236200)
Industrial Building Construction; Commercial and Institutional Building Construction