A reliable multifamily siding budget starts with measured exterior work and a consistent scope. Apartment count and interior floor area do not establish siding quantity. Before comparing prices, reconcile removal, wall repairs, flashing, trim, access, occupied-site protection and professional or permit costs. Then compare proposals using the same inclusions and the same assumptions.
Why a house-price average does not price your building
A residential project average mixes building sizes, materials and scopes. An apartment complex may have repeated openings, multiple stories, balconies, limited staging and more resident coordination. Those conditions change quantities and methods. Multiplying a single-family average by unit count hides those differences rather than measuring them.
This guide publishes a budgeting method, not a claimed Milwaukee market rate. We have not collected a verified local multifamily bid dataset. Use actual contractor proposals and measured quantities in the worksheet; obtain project-specific pricing before making a funding or contract decision.
Measure the work in the units being purchased
Start with an elevation schedule. For a simple rectangular wall, gross area is length multiplied by height. Gables, offsets and irregular shapes need their own measurements. Openings, trim and waste should be stated explicitly according to the proposal’s measurement convention, so two bidders do not silently use different net areas.
Geometry example, not a project estimate: a rectangular elevation 80 feet long and 30 feet high has 2,400 square feet of gross wall area. If the agreed measurement method deducts 400 square feet of openings, net cladding area is 2,000 square feet. An explicitly assumed 10% ordering factor would produce 2,200 square feet of material. That factor is illustrative, not a recommended allowance for every product or building. It does not add labor quantities automatically.
Do not subtract window openings twice or assume their trim is free. A smaller net cladding area can still involve considerable work around many openings. Ask how linear trim, fixtures, penetrations and special details are counted.
Use a complete budget schedule
| Category | Quantity or basis | What to clarify |
|---|---|---|
| Investigation | Defined visits/openings/report | What evidence is produced and how openings are protected |
| Removal and disposal | Agreed existing wall scope | Layers, regulated materials and disposal exclusions |
| Backing and framing | Known repair plus approved unit rates | Who defines the repair and measures discoveries |
| Water-control system | Specified assembly and transitions | Barrier, flashing, penetrations and compatible materials |
| Cladding and trim | Product, profile, area and detail quantities | Finish, attachments, cutting and waste |
| Access and staging | Equipment and duration assumption | Mobilization, ground protection and relocations |
| Occupied-site work | Written work-zone plan | Notices, temporary access and daily protection |
| Design and approvals | Actual project requirements | Professional scope, permits and inspections |
| Closeout | Defined deliverables | Punch list, cleanup, warranty and document handover |
A category is not necessarily a separate invoice. The schedule exists to establish whether the work is included, excluded, allowed for or unresolved.
How to compare two bids fairly
Take each base bid and add known required work excluded from it. Subtract an included allowance only when the comparison replaces it with the same defined allowance in every bid. Do not add a whole allowance on top of a bid that already contains it. Record the basis of every adjustment.
Hypothetical bid example: Proposal A is $180,000, excluding $12,000 of access and $8,000 of required trim. Its adjusted known scope is $200,000. Proposal B is $195,000 with those items included. On that limited comparison, B is $5,000 lower. Unknown deterioration remains unresolved in both; the arithmetic does not settle workmanship, contract quality or technical equivalence.
Enter your own figures in the bid comparison tool. It keeps the entered base price, known omissions and chosen planning reserve separate. The reserve is an owner-entered assumption, not a contractor price or a prediction of hidden damage.
Allowances, unit prices and contingency do different jobs
An allowance holds money for a described category not yet fully selected or measured. A unit price establishes how an additional measured quantity will be priced. A contingency is a planning reserve controlled according to the owner’s project process. The contract should explain how each operates, including credits, markup, documentation and approval.
For example, a sheathing allowance needs an assumed quantity, a measurement unit, the included removal and replacement work, and a rule for unused funds. A broad “rot allowance” may leave structural repair, temporary support, disposal and finish restoration undefined. If framing damage appears, the appropriate repair design may be needed before a rate can be applied.
Ask what happens if a work area cannot be closed while a decision is pending. Approval authority and weather-protection responsibility belong in the scope as much as the price does.
What about association funding or per-unit allocations?
A known project total can be divided into illustrative equal shares, but an equal arithmetic division does not establish an association’s lawful allocation. Governing documents, ownership shares, approvals and financing terms need review by the association’s appropriate advisers. Avoid calling a calculator result a special assessment.
Our HOA and condo project page explains the board packet; property managers can use the same scope schedule across multiple buildings while preserving separate quantities.
Reconcile a reserve-study figure with a current bid
An association’s reserve-study allowance is a planning input tied to a date, assumed scope and estimated timing. A current contractor proposal prices a stated project under its own assumptions. Neither should silently replace the other. Build a bridge showing what changed in quantity, materials, access, removal, technical repairs and timing.
Use four columns: reserve-study assumption; current condition finding; current bid inclusion; unresolved difference. For example, if the reserve item assumed cladding only but investigation identifies window-transition repairs, label that a scope change before attributing the entire difference to inflation. Have the reserve professional and association advisers update the funding implications for the actual documents and obligations.
This reconciliation does not establish a lawful assessment or recommend a financing product. It gives the board a factual explanation of why the project now being considered differs from the earlier planning allowance.
Questions to resolve before accepting a price
- Are all bidders using the same product, wall detail and measured quantities?
- What work is excluded, and has its cost been obtained rather than guessed?
- Are hidden-condition unit rates complete and tied to approval records?
- What access, resident protection and remobilization assumptions are included?
- Who owns permit coordination, professional design and required inspections?
- What documents and corrective work are required for final completion?
Read the complete replacement guide for the whole sequence. If the condition question is still unresolved, begin with repair versus replacement before commissioning competing full-replacement bids.