Compare building material quotes line by line, not by the total at the bottom. Put both quotes on the same quantities first. Then check grade, species, dimensions and treatment, then delivery terms, return policy, price hold and exclusions. Only then does the lower total mean anything.
This guide is for builders, general contractors and owner-builders in East Tennessee who have two or three material quotes on the desk and a gap between them that does not make sense. Most of the time the gap is not price. It is a different list.
At Spectrum Building Products, Jared Jarnagin prices every line of a take-off across more than one vendor, so reading quotes side by side is daily work. The method below works with any supplier and any set of plans.
Why are two quotes for the same house rarely the same list?
Spectrum Building Products finds that quotes differ because each supplier built its own list from the plans. Each list carries its own counts, its own waste allowances and its own gaps. Two totals from two different lists cannot be compared.
Look at what each one left in and out. One quote includes fasteners, hangers, housewrap and flashing. Another stops at lumber and panels and leaves the rest for later. One counted the garage and the porch framing. Another priced the heated floor area only. One allowed generously for waste on a cut-up roof and one barely allowed for any.
None of that is dishonest. It is what happens when several people read the same drawings on a deadline. The lower number is often just the shorter list, and the missing lines get bought later at whatever they cost that day. If the idea of a quantity list is new to you, start with what a material take-off is and why it matters.
What should you check first when quotes do not match?
Spectrum Building Products starts with quantities, before any price is compared. Pick one list as the master and put every quote on those same counts. Until the quantities match, the unit prices tell you nothing.
The cleanest way is to have one take-off done on its own and send that same list to every supplier. A take-off pulled from your plans gives each of them the same lines to price, in the same order. If the quotes are already in hand, do it backwards. Choose the most complete list, then mark where the others run short, run long or skip a line.
Watch the units while you do it. One quote prices panels by the sheet and another by the bundle. One prices trim by the piece and another by length. Convert everything to the same unit before judging a line. It is slow work, and it is where most of the gap between two totals gets explained.
Which product details change the price without changing the description?
Spectrum Building Products checks four details on every lumber and panel line: grade, species, dimensions and whether the piece is treated. Two lines can both say stud or sheathing and still be different products at different costs.
- Grade. A lower grade is cheaper and brings more culls with it.
- Species. Strength and stiffness vary, and span tables depend on it.
- Dimensions. Check length, thickness and panel rating, not just the name.
- Treated or untreated. Plates on concrete, deck framing and anything near the ground need treatment. In lake humidity that line matters more.
Substitutions and "or equal"
A quote may swap in a different product and call it equal. Sometimes it is. Ask what was swapped and why, and check it against the plans and your inspector's expectations. A substitution that meets the spec at lower cost is worth having, and the builder should be the one who decides. That is how cost savings consulting is meant to work.
Which terms outside the price column should you compare?
Spectrum Building Products compares five terms on every quote besides price: delivery, order minimums, returns, how long the price is held, and what is excluded. Any one of them can cost more than the difference between two totals.
- Delivery. Is it included or charged per trip? Does the truck carry a forklift or boom? A long haul up a steep gravel drive is not every driver's job.
- Minimums. Small fill-in orders may carry a charge.
- Returns and restocking. Ask what comes back, in what condition, and what fee applies. Special-order items often cannot be returned.
- Price hold. A quote is good for a set window. Our post on planning around lumber price swings explains why.
- Exclusions. Read the fine print for taxes, fuel charges and items marked as priced later.
Delivery terms deserve a second look on tight or sloped lots. See jobsite delivery and staging basics for what to ask.
What does a line-by-line comparison checklist look like?
Spectrum Building Products works through the same order every time: quantities, then specifications, then terms, then totals. Totals come last because they only mean something once the first three match.
- Put every quote on one master list of quantities and units.
- Mark each missing line and get a price for it.
- Confirm grade, species, dimensions and treatment on each lumber and panel line.
- List every substitution and decide which ones you accept.
- Write down delivery charges, minimums and return terms for each supplier.
- Note the date each price expires.
- Read the exclusions and add back what was left out.
- Now compare the totals.
A consolidated quote that shows each item, quantity and price makes this far easier, because there is nothing to untangle. That is the form vendor price sourcing produces. Keep the finished comparison with the job file. It answers most arguments later.
Key takeaways
- Different totals usually mean different lists. Match the quantities before comparing prices.
- Grade, species, dimensions and treatment can differ under the same line description.
- Delivery, minimums, returns, price holds and exclusions belong in the comparison.
- Ask what was substituted, and make the call on each swap yourself.
