Looking to buy? See How to Save on Construction Materials
What to Do With Leftover Construction Materials
You finished the project. Now you're looking at pallets of tile, a stack of windows that didn't get installed, or fixtures from a design change. You can store them indefinitely, throw them away, or sell them.
This guide helps you figure out what's actually worth selling, how to price it, and where to list it.
Common Situations
- Post-project surplus — Contractors order 10-15% extra for contingency. When the job finishes under budget, the surplus stays.
- Design changes mid-project — A client swaps tile selections, a window size changes, lighting gets redesigned. The original order needs a new home.
- Showroom or dealer overstock — Returns, discontinued displays, excess inventory that needs to move for new lines.
- Renovation leftovers — You finished your kitchen and have 4 boxes of tile and a light fixture you didn't end up using.
Is It Worth Selling?
Not everything is worth the effort. Here's a quick filter:
Usually worth it:
- Premium brand tile (Ann Sacks, Heath, Pratt & Larson) in usable quantities (50+ sq ft)
- High-end windows (Marvin, Andersen A-Series, Kolbe) — new or unused
- Designer lighting (Visual Comfort, Hudson Valley, RH)
- Quality kitchen & bath fixtures (Waterworks, Kohler, Rohl)
Probably not worth it:
- Builder-grade materials with low retail value
- Small quantities (under 20 sq ft of tile, single budget fixtures)
- Previously installed windows with questionable seal integrity
- Unidentified materials without brand or model info
The rule of thumb: if the original retail value is high enough that a 30-50% discount still represents real money to a buyer, it's worth listing. If it retails under $5/sq ft or under $50 per unit, the economics are tough.
How to Price It
Setting the right price is critical. Too high and it sits. Too low and you leave money on the table. The basic formula:
- Find the current retail price (your baseline)
- Discount for condition (new in box = 30-40% off, open box = 40-50% off, loose = 50-60% off)
- Adjust for specifics (brand demand, quantity, completeness)
- Factor in your timeline (patient = higher price, urgent = lower price)
Guides by Category
Different materials have different considerations — what sells, how to prepare it, packaging, and shipping:
Minimum quantities, lot numbers, boxing and palletizing, setting purchase limits, LTL freight
New vs. installed value, brand tiers, measuring specs, storage requirements, shipping logistics
If Selling Isn't Worth It
Donate — Habitat for Humanity ReStore accepts construction materials and provides tax receipts. Good for materials that are functional but not valuable enough to sell.
Give away — Free listings on Craigslist or Facebook Marketplace move things fast. Someone finishing a small bathroom will happily take 30 sq ft of tile off your hands.
Recycle — Check local construction recycling options. Some municipalities accept clean construction materials separately from regular waste.
Keeping usable materials out of the landfill matters — construction debris is the #1 source of solid waste in the US. Read more about why reuse matters.
Ready to Sell?
List it yourself (free) — Post on Unbuilt Exchange. You set the price, buyers contact you directly. No fees.
Let us handle it — Apply for consignment and we photograph, list, price, and ship. Commission starts at 18%.
Not sure? — Reach out and we'll tell you straight whether it's worth listing.
Looking to Buy?
Surplus construction materials often sell at 30-50% off retail. Most of it is new in box.
How to Save on Construction Materials