Field notes / Homeowner guide
Demolition, deconstruction and material assessments before a replacement home
Before an older house comes down or is opened up, three things must be settled in writing: which agencies govern the removal, what qualified assessments say about the materials in it, and who disconnects, salvages and hauls what. This guide helps owners organize those questions. It is preparation, not instructions for testing, removing or handling hazardous materials.
Written · KB Remodeling
The short answer
Demolition and deconstruction are both removal scopes with their own agency steps. In the South Coast air district, Rule 1403 governs asbestos emissions from demolition and renovation, and its homeowner instruction sheet (revised June 2025) describes a 14-calendar-day demolition notification. Lead-safe work practices apply to many renovations of pre-1978 homes under EPA's RRP program. Confirm the requirements for your parcel with each agency.
Who this applies to
Owners replacing or substantially opening up an existing house. It does not cover wildfire debris removal, which follows separate disaster-specific programs, and it does not describe any testing, abatement or clearance procedure.
01 · When it applies
Separate the agencies before the scope
Demolition usually needs a permit from the local building authority: a City department inside an incorporated city, the County in unincorporated areas. Air-quality rules come from the regional air district, which is a different agency with different boundaries. In much of Los Angeles, Orange and western Riverside and San Bernardino counties that is South Coast AQMD, whose Rule 1403 addresses asbestos emissions from demolition and renovation; Ventura and Santa Barbara counties have their own air districts. Ask each agency directly what applies.
Keep wildfire debris apart. After the 2025 fires, South Coast AQMD published separate steps for property owners who opted out of the government debris program. Those disaster steps are not a template for an ordinary demolition, and ordinary demolition rules do not describe disaster cleanup.
Ask yourself
- Which building authority issues the demolition permit for this parcel?
- Which air district covers the parcel, and what does it require before demolition or renovation?
02 · Comparing the options
Demolition or deconstruction
Conventional demolition removes the structure quickly and hauls most material away. Deconstruction takes the house apart in a planned order to salvage or separate materials. Both are removal scopes; both need the same agency answers and material assessments first. CALGreen, California's green building standards, includes construction waste management requirements, and CalRecycle publishes summaries by code edition; ask your building authority which edition and which tracking or diversion documentation applies to your permit.
| Question | Conventional demolition | Deconstruction |
|---|---|---|
| What drives the plan | Access, equipment and haul routing | Sequencing, labor and material separation |
| Material outcome | Mostly hauled; some separated | Planned salvage and separation |
| Owner decisions | Items to save before removal | What to salvage, store or donate, and who documents it |
| Common to both | Permits, air-district steps, material assessments, utility disconnections | Same |
Ask yourself
- Does the building authority require a waste management plan or diversion report?
- Which materials are worth salvaging, and who will document them?
Source for this section
03 · What to ask for
Material assessments: arrange them, don't perform them
EPA's Renovation, Repair and Painting program addresses lead-based paint in pre-1978 homes, and EPA recommends hiring lead-safe certified firms for that work. Asbestos is governed by air-district and other rules; South Coast AQMD's materials refer to surveys by certified consultants. Which materials need assessment, who may perform it and what the results trigger are questions for those agencies and qualified consultants, not for this guide.
Your role is to commission the assessment before any disturbance, give the consultant access and the existing records, and make sure the results reach the designer, the contractor and the agency file.
Ask yourself
- Who is qualified to assess each material of concern for this scope?
- Will the assessment cover every area the work will disturb?
- Who receives the results, and how do they change the scope and schedule?
04 · What to ask for
Coordination checklist
Print or copy this list and assign a name and date to each line. Provider and agency requirements vary, so every line is a question to confirm, not a step to perform yourself.
| Item | Responsible party | Confirmed with | Date |
|---|---|---|---|
| Existing permit and plan records gathered | |||
| Demolition permit requirements confirmed | Building authority | ||
| Air-district notification requirements confirmed | Air district | ||
| Material assessments commissioned and received | Qualified consultant | ||
| Electric, gas, water and sewer disconnection requests | Each provider / agency | ||
| Salvage list and storage | |||
| Waste and recycling routing and documentation | Building authority / hauler | ||
| Neighbor notice, access and protection questions |
05 · An example
Fictitious scenario: a planned replacement
A generalized, fictitious owner plans to replace a mid-century house. Before pricing, the owner gathers the permit history, asks the building authority and the air district what each requires, and commissions lead and asbestos assessments of the areas to be removed. The results add an abatement scope ahead of demolition, which the owner records as a separate budget line and schedule step. A salvage list keeps original doors for reuse. No duration or cost is assumed until the consultants and contractor price their scopes.
Ask yourself
- Which removal items are still unpriced?
Who answers which question
| Question | Answered by |
|---|---|
| Demolition permit and conditions | City or County building authority |
| Asbestos notification and work practices | Regional air district |
| Lead-safe work requirements | EPA RRP program and certified firms |
| What materials are present | Qualified consultant's assessment |
| Disconnections | Each utility provider or agency |
A scenario to consider
Fictitious, generalized scenario: an owner books a demolition contractor before asking the air district about notice. Confirming the requirement first moves the start date but avoids a stopped job.
Planning scenario
Bring this to your conversation
- Identify the building authority and the air district for the parcel
- Gather existing permit and plan records
- Commission material assessments before any disturbance
- Request utility disconnections from each provider
- Decide salvage and waste routing with documentation
- Record assessment results in the brief, budget and schedule
One more question
Does KB Remodeling test for or remove hazardous materials?
This guide does not offer that service. Testing and abatement belong to qualified, appropriately certified consultants and firms.
Official references
Research the property · Web resource · English source
South Coast AQMD — Asbestos demolition and removal (Rule 1403)Use this for: Ask South Coast AQMD what applies before demolition or renovation where it is the air district.
Research the property · PDF · English source
South Coast AQMD — Rule 1403 notification instructions (2025)Use this for: Read the dated notification instructions to prepare questions; the district decides what your project needs.
Check professionals · Web resource · English source
EPA — Lead-safe renovation (RRP) for consumersUse this for: Find lead-safe certified firms for renovation of a pre-1978 home; this is not a do-it-yourself procedure.
Prepare plans and ADUs · Web resource · English source
CalRecycle — CALGreen construction waste requirementsUse this for: Check which CALGreen edition and waste documentation your building authority applies to the permit.
Research the property · Web resource · English source
LADBS — PRISM permit and records searchUse this for: Request City of Los Angeles permit and record copies when assembling the existing-house file.
For requirements specific to your property, consult the local reviewing authority.
About this guide
Published by KB Remodeling from the official sources cited. It is not attributed to an individual author and does not claim review by an architect, engineer or attorney. We receive remodel, ADU, new-home and rebuild inquiries; scope, licensing and location are reviewed before any next step.