Window Replacement in Apartment Buildings: Capital Cost, Savings and Underwriting
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Windows age, seals fail, frames rot and glass fogs. In an older apartment building, the windows may leak air, carry noise into the units and raise the heating and cooling bill. Replacing them is one of the largest capital projects in a value-add plan, and the cost is spread across every unit. A sponsor who replaces windows usually does it for three reasons: to fix a condition, to improve how the units rent and to lower operating costs. Only the first reason is certain.
This guide explains how to price a window replacement per unit, how to count energy savings without guessing, and how to show investors the payback in a way they can check.
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What does a window project include?
- The window units: the glass, the frame and the sash, in the size and material the bid specifies.
- Trim and interior work: the sills, the casing and the paint that the new frame needs.
- Labor by floor: exterior access, such as a lift or scaffold, often costs more than the windows.
- Removal and disposal: the old units, with any lead or other hazard handled under the rules that apply.
- Permits and inspections: many cities require a permit for replacing windows, and some require an energy code check.
How do you price it?
Ask for a bid for every window type in the building, counted by opening, not by unit. A unit may have two or three openings of different sizes. Ask the bidder to list the access equipment separately, because it changes with the building's height and the number of floors.
Add a contingency. Older frames often hide rot, and an opening that looks standard may be out of square. A 10 percent contingency is a common starting point. Replace the number with your contractor's findings after a few openings are measured.
How do you count the savings?
Energy savings are real but uncertain. A new window may cut air leakage and some heating or cooling use, but the result depends on the climate, the old windows, the units' own heating and cooling, and how residents use them. The safest source is the building's utility history: the last two or three years of common-area and unit bills, if the owner pays them.
Ask for a written energy estimate from the bidder or an energy auditor. Treat it as a range. Then test the savings against the building's bills. If the owner pays only the common-area meter, count only the savings on that meter.
Do not count rent growth from new windows unless the local market shows it. A nicer window may help leasing, but there is no fixed rent premium for it.
Hypothetical example
These figures are made up for illustration. Use your own bids, utility bills and energy estimate.
A 60-unit building has 150 openings. The bid is $650 per opening, including trim and labor, which is $97,500. Access equipment adds $12,000, permits add $3,000, and a 10 percent contingency adds $11,250. The total is about $123,750, or about $2,063 per unit.
The energy estimate shows about $4,500 a year of savings on the owner-paid meters at the middle case, $2,500 at the low case and $6,000 at the high case. The owner shows investors the payback at each case: about 27 years at the middle case, 50 years at the low case and about 21 years at the high case. None of these pays back in a typical hold period, so the window project must be justified by the condition it fixes, not by the energy savings alone.
What should you check before you commit?
- The condition report, which should name any failed seals, rot, or drafts that the windows must fix.
- Lead paint and other hazard rules for the old frames, and the lender's requirements for the work.
- Whether the windows must meet a local energy code or a permit inspection.
- A phasing plan that keeps each unit's heat, water and entry safe during the work.
- The warranty on the glass and the frame, and the installer's insurance.
How DoorRaise fits in
DoorRaise helps sponsors raise equity for apartment buildings with 5 or more units under Rule 506(b) or 506(c). The deal's budget shows the windows as a capital item, and any savings appear as an estimate with the basis shown. DoorRaise does not choose window suppliers or judge energy performance. Setup is $1,500 (non-refundable), and the administration fee is $5,000 a year from closing.
Start with a sponsor page or see the fees.
FAQ
Do new windows raise rent?
Not by a fixed amount. Test the rent effect with comparable buildings that have new windows before you count it.
Is a window replacement a repair or a capital expense?
Usually a capital improvement when the work replaces the windows. Ask your CPA how it applies to your entity and your deal.
Should I replace windows or repair them?
Repair the ones that work, and replace the ones that fail. A window inspection by unit tells you where the cost is needed.
Can residents be charged for new windows?
Only where the lease and the local rules allow it. Check both before you plan the cost, and show investors any pass-through as a separate assumption.
Sources
- Capital expenditures vs. operating expenses in apartments, for how to classify the work.
- Apartment property due diligence and inspections, for the condition review that finds failed windows.
- Lead-based paint rules for apartment buildings, for the old frames.
- Example figures are hypothetical. No window price, energy rate or rent premium is cited here.
This article is general information, not legal, tax or investment advice. Talk to a securities attorney and a CPA about your deal. DoorRaise is not a law firm, broker-dealer, investment adviser or funding portal.