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Multifamily project planning

HOA Waterproofing Project Planning Guide

A practical guide for HOA boards and property managers in Los Angeles and Orange County to compare waterproofing proposals, plan balcony and walkway repairs, and coordinate work at occupied communities.

Published by California Decking & WaterproofingUpdated
Apartment building with exterior glass balconies
Stock photo · Gunnar Ridderström / Unsplash
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A practical guide for HOA boards and property managers in Los Angeles and Orange County to compare waterproofing proposals, plan balcony and walkway repairs, and coordinate work at occupied communities.

Planning guidance from California Decking & Waterproofing · 40+ years of Southern California experience · CSLB #993188

Create one reliable project record

For multifamily deck, balcony, walkway or stair repairs, collect inspection reports, leak history, prior proposals, plans, photographs and unit contacts in one place before requesting pricing. Contractors can produce clearer scopes when they are working from the same information and location names.

If your project starts with SB 326 or SB 721 inspection findings, share the complete report so the listed repair areas and access needs can be reviewed before a proposal is prepared.

Explore SB 326 & SB 721 repair services

Compare scope before comparing totals

Two proposals can describe very different work even when both use the word waterproofing. Compare preparation, demolition, substrate repairs, flashing, drainage, finish system, exclusions, access responsibilities and how concealed damage will be handled.

  • Are quantities and locations clearly listed?
  • Is substrate repair included or excluded?
  • Are edge, drain and wall details identified?
  • Who moves furniture and provides access?
  • How are additional conditions approved?

Build resident access into the sequence

A technically sound scope can still fail operationally if residents cannot be reached or walking routes are closed without a plan. Confirm notice periods, work hours, alternate routes, unit access and cure times before setting the schedule.

For larger communities, a small first phase can clarify production rates and communication needs before the same sequence is repeated across multiple buildings.

Keep decisions visible

Use written approvals for changed conditions and keep photographs organized by building and unit. A consistent record helps the board, manager, contractor and inspector understand what was found, what was authorized and what was completed.

Common questions

HOA waterproofing planning questions

How should an HOA compare waterproofing proposals?

Compare the same locations and quantities, then review preparation, substrate repairs, flashing, the coating system, exclusions and access responsibilities. Each proposal should explain how concealed damage and additional work will be documented and approved. The lowest total may cover a different scope.

Can residents stay during balcony or walkway waterproofing?

That depends on the work areas, available access routes and required closures. Review resident notices, unit access, alternate walking routes and coating cure times before setting the schedule. A phased plan may reduce disruption, but continued access must be confirmed for the specific property.

Do we need an inspection report to request an estimate?

You can start with photos, the property location and a description of the condition. Include any existing SB 326 or SB 721 report so our team can review the listed repair areas. An estimate is separate from the inspection process.

Need advice for a specific property?

Show us the condition and tell us where the project is located.