Step one: grade every opening, do not just count them
A whole-house budget built on a count is a guess. One built on a grade is a plan. Walk the house with a notepad and give every opening an A, B or C before you talk to anyone.
The four-minute test at each window
Open it, close it, lock it. Look for haze or a film between the panes, which means the seal has failed and the unit cannot be repaired. Press a thumbnail into the wood at the bottom corners of the sill and sash. If it sinks, that is rot rather than tired paint. Run the back of your hand around the perimeter on a windy day. Note anything painted shut.
What a grade of C actually means
A is sound and operates. B works but has fogged glass, dead balances or a broken lock. C has rot in the sill, frame or sash, or will not open at all. On a central Indiana house past forty years old the split often lands near a third in each grade, and the C list is what decides whether you are buying inserts or full-frame units.
Photograph anything with a stain, a soft corner or an odd size, and keep the pictures on your phone. When three companies walk the house in the same week, the photos stop the conversation restarting from zero each time, and they are the record you want if a bid later claims a sill was sound.
Step two: settle insert or full-frame, wall by wall
An insert keeps the existing frame and exterior trim and runs roughly $525 to $850 an opening. Full-frame goes back to the rough opening, adds flashing and wrap, and runs roughly $750 to $1,400. The right answer is rarely the same across a whole house.
Inserts work where the frame is square, dry and structurally sound, which covers most construction from the 1990s onward and plenty of well-kept older homes. Full-frame is the honest answer where the sill is soft, where an opening has to grow to meet bedroom escape sizes, or where the original wood needs to come out so the new sill pan can be done correctly.
Mixing methods on one house is normal, and a good installer will propose it without being asked. What you want in the bid is the method written against each opening so the price cannot drift on install day.
One cost consequence of that mix is worth knowing before somebody explains it to you on day two. A house that is half inserts and half full-frame does not land at the average of the two prices, because the crew sets up twice for two different methods and the slower one sets the schedule. Expect a mixed job to price nearer the full-frame end than simple arithmetic suggests.
Step five: clear code before the order, not after
Bedroom windows have to meet escape and rescue requirements once they are replaced, and the rules are specific about net clear opening area, minimum clear width and height, and how far the sill sits above the floor. A replacement that is an inch short in the wrong dimension can fail. This bites hardest in older homes with tall narrow sashes and in basements being converted to sleeping rooms.
Permit practice varies by jurisdiction across Indiana. Many departments want a permit for replacement work and nearly all want one when an opening changes size. Fees are usually modest. Settle who is pulling it in the contract rather than over the phone.
If the house sits in a historic district or under an HOA architectural covenant, get approval in writing before the order goes in. Committees care about grid patterns, exterior color and whether a divided-light look is simulated or applied, and a rejected order on windows built to your openings is not a returnable mistake.
Step seven: walk the job before the last payment
Do the walk with the crew lead still on site, not two days later. Open, close and lock every sash. Look for even reveals around each unit, caulk that has been tooled rather than smeared, and exterior wrap with no exposed fasteners or open seams at the sill. Confirm every screen is there and fits its own opening.
Inside, check the return and the trim line. Outside, check the bottom corners, which is where water finds a way in first during a wind-driven Indiana rain. Collect the warranty paperwork and the order numbers before the final check leaves your hand. Those documents are what you will need in year seven when one balance gives out and you want it covered.
Then run the walk again a week later, after the house has been through a rain and a cold night. Look for condensation forming between the panes of a brand new unit, which is a failed seal and a warranty replacement rather than a callback. Put a hand at the bottom corners on a windy evening. Punch-list items raised in week one get fixed quickly. The same items raised in month six turn into a negotiation.
Step three: put a ceiling and a stretch number on paper
Decide two numbers before any appointment: what you will spend, and what you would stretch to if the better answer is obvious. Without them, a long in-home presentation and a same-day discount will decide for you.
A workable way to set the ceiling is opening count times $800, plus $3,000 for specialty units and surprises. On sixteen openings that is about $15,800. If your real ceiling is $11,000, you already know before the first visit that you are pricing entry-level inserts or phasing the work, and you can say so in the first five minutes.
If the ceiling sits below the number
Two honest options exist, and dropping the specification across all sixteen openings is only one of them. The other is doing the ten worst openings properly this year and the remainder in two years, ordering the same line and series both times so the house still matches. On a fixed budget that choice moves more than any brand decision you will make.
Step four: collect three bids that describe the same job
The lines every bid should carry
- An opening-by-opening schedule with sizes, marked insert or full-frame
- Manufacturer, product line and series, not just a brand name
- Glass package: low-E type, gas fill and spacer
- Exterior finish work, including capping or wrap, and who paints what
- Disposal, and whether a container is included
- A written rate for rot repair found after demolition
- Payment schedule and a start window
- Warranty terms, including whether they transfer with the house
The two questions that change a price
Ask how many openings the crew completes in a day and with how many people. Anyone claiming ten full-frame openings a day is telling you something useful. Then ask what happens if the sill is rotten at opening number nine. The answer separates people who have worked in an eighty-year-old Heritage Lake house from people who have not.
Step six: the measure day, the deposit and the calendar
What the final field measure can change
The salesperson measures to quote. Someone else measures to order, usually after signing, and that visit is where a quoted stock size becomes a custom size, where an out-of-square opening surfaces, and where the specialty unit count gets corrected. Ask to see the measure sheet and compare it against the bid line by line.
A deposit of a quarter to half is normal on a whole-house order because the units are built for your openings. A demand for the full amount before delivery is not. Expect three to eight weeks from final measure for stock vinyl and six to twelve for custom sizes or clad units, longer through spring.