I'll go ahead and chime in here since this is my world.
1. Lumber futures contracts are a speculative asset. They are not a guarantee of ACTUAL lumber prices, but a speculation of what will happen. I traded real world lumber for years and have plenty of friends still in that world, there has been a 10-15% pullback in the broad composite average across all species, but its still up 4X since last year. Lumber futures had pulled back 52% in 5 weeks. Lumber will not move that far down for quite a while.
2. "Lumber" itself is a small portion of the cost of building a home. Land and labor are by far the biggest pieces of the cost. Does anyone believe labor costs are going down anytime soon? How about land? So while lumber and osb will come back to earth, labor is going to rise rapidly and residential lots are as rare as a bottle of Pappy sitting on the shelf at MSRP in most markets.
3. All other components of construction are still taking massive price increases. Engineered wood went up 30-40% in May. Same with siding. These are not commodity items. They will not decline in price very often if ever. There is currently a massive shortage on large nailing plates for roof trusses. I know of several truss plants that are barely operating until they can get plates. They are not buying lumber right now, but when they come back online it will drive the market up.
4. Builders are not in the business of lowering home prices on new construction. Cost plus guys don't really care, they just raise/lower the price through the build as stuff changes, but most single family in the US is built by production builders. They will usually contract price at today's market and when the home is complete, you get the build at the agreed upon price. In this environment, it pays to be early as a buyer. I see new construction neighborhoods where the same model house is up 40-50% YOY. The housing price increases are slowing, but they are still happening. This is mainly demand driven. The lots have doubled and their are labor shortages... Remember the old adage folks, real estate is local. Demand in rural MS is not the same as Austin, TX. If you are in a low demand area, it's likely you could see some pullbacks in home prices, but if demand is there... they will continue to climb.
5. Anybody that bought in the last year has been able to lock in a wonderful interest rate. After yesterday's FED scuttlebutt, all signs point to a slow climb in interest rates. This will eventually slow demand, but for those already locked in the low rates are going to be a big deal down the road. Conventional thinking would suggest that as interest rates rise, it will hurt house prices through affordability... Which is true in low demand areas with weak wage growth. But rising interest rates are usually a direct result of economic growth, which means higher wages. Rising interest rates also drive up rental costs, which helps prop up single family home value.
6. This summer is projected to be a record fire season out west and a busy hurricane season. In a constrained market, either one of these could cause a massive supply side problem on lumber and osb.
All in all, 8 out of 10 homebuyers in the last 6-12 months are in at a better price than they would be if they waited. If you are doing a custom build/DIY type thing in a low demand area, patience has been a virtue. But national projections are showing a 7% increase home values for the remainder of this year and 4.1% increase for next year. That means a 10-20% in some areas by the end of 2022 and maybe closer to 0 in other areas.
ETA. While I was typing this lumber futures are up 11% from today's low. There is a lot of contract covering and the likes going on, but futures most likely overshot the mark in April and have over corrected here in June.