Home Addition
High-stakes personal decisions requiring trust, guidance, and coordinated execution across multiple parties.
This interactive experience is the shipped product itself — the same application code customers run in production, mounted read-only in your browser over a real sample journey. Not a video, not a mockup: because the demo and the product are one codebase, it can never drift from the real thing.
Inside this journey
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Homeowner Discovery
Align on the buyer's space needs, site constraints, budget range, timeline, and key decision-makers.
Discovery Questions
Quick home snapshot
- Tell me the main reason you are considering an addition now, and how long this has been top of mind.
- Walk me through a typical day in the rooms you want to change, focusing on who uses each space and when.
- When would you ideally like construction to be complete, and why is that timing important to your household?
- Who in your household or extended family must sign off on scope, schedule, or budget before you move forward?
- Would you pause or cancel the project if it required temporary relocation for more than 4 weeks?
Where the space pressure actually shows up
- Which daily problem would make you walk away from an addition if it could not be solved, for example loss of privacy, excessive disruption, or a poor architectural match?
- Share a recent moment when the current layout created real stress, and tell us what happened next.
- On a scale from 1 to 10, how disruptive is the lack of this space to your family's daily life?
- List the primary functions you need the new space to perform, choose up to three.
- Confirm whether you have tried a temporary fix such as converting a garage, basement, or adding a modular unit and why that solution did or did not work.
Design fit, not just bigger
- Imagine you regret the addition a year after completion, what about the design or integration would most likely cause that regret?
- Tell me which architectural details on your house matter most to match, for example roof pitch, siding material, or window style.
- Confirm whether you have collected photos or examples of additions you like and which specific features in those images matter most.
- Where in your home do you expect HVAC, plumbing, or electrical tie-ins to occur, and how flexible is that location?
- Share any interior finish materials that must match exactly for resale or aesthetic reasons.
Hidden risks that break budgets and trust
- If an inspector or engineer finds a structural or code issue that requires additional funds or time, what would make you stop the project immediately?
- List any known site constraints or conditions we should know about, for example poor soil, septic field, large trees, narrow access, or buried tanks.
- Imagine opening walls reveals older wiring or plumbing, are you prepared to accept contingency allowances in the 10% to 20% range while we investigate?
- Do you have non-negotiable limits for dust, noise, or access while you live in the home, such as sealed rooms, no weekend work, or no loud work after 5pm?
- On a scale from 1 to 10, how willing are you to accept unknowns versus delaying work to investigate further?
Who else is in the market, and why they matter
- Who are the other options you are seriously considering for this addition, including architect-only, general remodeler, or doing the work yourself?
- Which single factor would have to be true about your current approach for you to keep it instead of hiring an outside builder?
- Identify whether anyone inside your household or network has proposed solving this without an outside contractor, for example staged work, family labor, or phased DIY.
- Describe the past homeowner references, case studies, or review details that would convince you to move forward with a contractor.
- Is there an incumbent contractor, architect, or advisor you already favor, and if so what is the main barrier to choosing them now?
Site readiness and practical constraints
- Do you already have a property survey, utility locate, or structural report that would allow work to start within 4 weeks?
- When was your last major roof, foundation, or HVAC update and could that affect tie-ins for the addition?
- Is your property subject to homeowners association rules, a historic district, or easements that could limit exterior changes?
- Describe vehicle access, parking, and staging areas on your property for equipment and materials, and note any restrictions.
- Identify who will be the day-to-day point person on your side for permits, decisions, and communications.
- Are there any scheduled events in the next 6 months, such as a wedding, newborn, or long work travel, that would make construction impossible during that window?
Budget, decision triggers, and timeline to yes
- Rate from 1 to 10 how ready you are to sign a construction agreement if scope, schedule, and contingencies align with your budget.
- Walk me through how budget decisions are made in your household, including any lenders or external advisors involved.
- Where does your planned budget sit today, including a reasonable contingency, and how firm is that figure?
- If permits or unexpected engineering push price or timeline beyond your window, what is your threshold for pausing or canceling the project?
- State your preferred payment schedule or financing route and whether you need help exploring options.
- Are there fixed dates tied to resale, insurance, school year, or occupancy that require final completion and inspection by a specific date?
Living through construction and next steps
- Name the conditions that would make living in your home during construction unacceptable, for example inability to sleep in certain rooms or critical health concerns.
- Why would you prioritize daily access to parts of the home versus speed of completion, and which matters more if they conflict?
- Choose which communication cadence would make you feel confident during build, for example daily updates, weekly check-ins, or milestone photos.
- Summarize the single decision or condition that would allow you to sign within two weeks, assuming scope and budget line up.
- Explain any final acceptance criteria you must see before authorizing final payment, such as inspection completion, punchlist resolution, or permit closeout.
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Design & Experience Review
Walk through design concepts, integration strategies, and living-in-place plans using the buyer's home context to surface risks and expectations.
Solution Experience
- Design & Living-in-Place Review
- You confirm the restated current state and accept the described cost, delay, or risk as accurate.
- Deliver a concept-level integration sketch showing foundation connections, roof tie-in, and exterior material approach for the preferred option within 5 business days.
- Confirm the current state and its cost
- You confirm the demonstrated integration approach resolves the architectural match concerns and identifies any remaining unknowns to verify before commitment.
- Walk the concept in your home context
- Provide a written living-in-place schedule that lists access windows, staging plan, and dust/noise controls tied to major milestones.
- You accept the proposed living-in-place plan and disruption windows as operationally workable for your household.
- Quantify living-in-place impact and controls
- Produce a concealed-condition contingency table that links specific likely discoveries to defined cost allowances and timeline adjustments and includes the proposed verification checkpoints.
- Define concealed-condition contingency and verification criteria
- You agree that the concealed-condition contingency and the verification criteria are sufficient to manage cost and schedule risk.
- Confirm the full list of decision-makers, acceptable daily access windows, and any homeowner living preferences that will constrain the schedule.
- Supply clear photos or notes about known prior structural modifications and any known underground utilities or access constraints.
- Validate that this maps to what you described
- Schedule the follow-up meeting to review the revised integration sketch, living-in-place schedule, and updated estimate.
- Agree remaining evidence and next decisions
- Design & Living-in-Place Review
- Design & Experience Deck
- Solution Brief - Design & Experience Review
- meeting
- slides
- document
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Construction Scope
Define deliverables, structural and finish modules, responsibilities, permitting tasks, and measurable verification criteria.
Scope Configuration
- Demolition and Selective Removal
- Temporary Protection and Occupied-Home Access
- Obtain Building Permits and Agency Submittals
- Structural Engineering and Stamped Drawings
- Foundation Excavation, Footings, and Pour
- Framing and Roof Tie-In
- Roofing Integration and Flashing
- Exterior Weatherproofing and Finish Matching
- Electrical, Plumbing, and HVAC Rough-In
- Insulation and Drywall Installation
- Finish Carpentry, Flooring, and Millwork
- System Balancing and Mechanical Commissioning
- Final Inspections, Closeout Documentation, and Warranty Handover
Scope Questions
Demolition and Selective Removal
- Do you require asbestos or lead testing and abatement before demolition?
- Which interior elements must be preserved or matched (built-in cabinets, historic moldings, stair newel)?
- How many linear feet of walls or how many door assemblies are planned for selective removal?
- Provide the temporary power disconnect plan for affected circuits and the expected outage duration in hours.
- Specify disposal or recycling requirements for demolition debris (municipal transfer station, C&D recycling, hazardous disposal).
Temporary Protection and Occupied-Home Access
- Identify doors, hallways, and HVAC returns that need temporary protection (zip barrier, filter covers) during construction.
- Confirm homeowner living preferences for access hours, contractor check-ins, and locked rooms.
- Attach a floor plan showing proposed contractor access paths, staging zones, and protected areas.
- Are there pets or occupants with mobility or medical considerations that require special access controls?
- Select preferred entry control method for the jobsite (key lockbox, supervised entry, homeowner escort).
Obtain Building Permits and Agency Submittals
- State the project jurisdiction (city, county) and the known permit types required (building, plumbing, mechanical).
- List any previously issued permits or open code violations on the property.
- When would you like permit submission relative to contract signing (immediately, after engineering, after homeowner approvals)?
- Specify if a site survey, tree protection plan, or soils report is required by the authority having jurisdiction.
- Confirm the name and contact of the person authorized to sign permit applications on your behalf.
Structural Engineering and Stamped Drawings
- Attach engineered structural drawings, foundation details, and any existing structural reports you have.
- Who should be the engineer of record for stamped calculations and field observation reports?
- Describe known structural constraints such as existing beam sizes, visible sag, or cantilevered floors.
- Identify required stamped items: lateral calculations, connection details for the new roof tie-in, and shear wall locations.
- Verify whether the engineer must perform scheduled field observations at footing, framing, and final stages.
Foundation Excavation, Footings, and Pour
- Supply the soils report or note if one must be obtained before excavation.
- Estimate the expected foundation type based on site conditions (continuous footing, isolated footings, shallow slab).
- Measure or confirm required footing depths and reinforcing per engineer's stamp and local frost depth.
- Define required municipal inspections and acceptance evidence for footings (inspection sign-off, inspected footing depth photo).
- State whether temporary shoring or underpinning is needed for adjacent existing foundations or shafts.
Framing and Roof Tie-In
- Point out the roof tie-in location and provide existing roof pitch, ridge height, and shingle type.
- Select the framing approach for the addition: stick-framed timber, prefabricated trusses, or structural steel.
- Define required structural sign-off deliverables: stamped framing plans, on-site engineer inspection reports, and deflection limits.
- Describe connections to existing framing including ledger attachment, rim-joist splice, and fastener schedules.
- Indicate whether existing roof sheathing needs full replacement at the tie-in area or can be patched.
Roofing Integration and Flashing
- Provide the existing roof material specification, underlayment type, and current flashing details at valleys and chimneys.
- Which flashing method do you prefer where new roof meets existing roof (step flashing, continuous metal, field-formed)?
- Photograph the existing roof tie-in area and upload images to serve as reference for flashing sequencing.
- Are ice and water shield or specific underlayment mandated by the authority having jurisdiction or warranty?
- Detail expected manufacturer warranty transfer requirements for new shingles and flashing assemblies.
Exterior Weatherproofing and Finish Matching
- Name the existing siding, trim, and paint system to be matched and provide color or product codes if available.
- Choose an exterior material match strategy: exact match, complementary but distinct, or full replacement for continuity.
- Measure exposed exterior trim profiles and provide photos or profile templates for millwork matching.
- Is a full water-resistive barrier replacement required at the interface with existing walls?
- Upload a photo of the existing window trim and corner details to aid finish and color matching.
Electrical, Plumbing, and HVAC Rough-In
- Share the existing electrical panel capacity and main breaker size and indicate if a subpanel is acceptable for new branch circuits.
- List new mechanical penetrations required (new HVAC run, water heater relocation, dryer vent) and preferred locations.
- Estimate the number of additional circuits required for lighting, receptacles, and dedicated appliances introduced by the addition.
- Clarify required inspection evidence for rough-in trades (electrical inspection sign-off, plumbing pressure test, duct leakage test).
- Indicate if HVAC balancing and new thermostat zoning are required as part of the mechanical scope.
Insulation and Drywall Installation
- Outline the target insulation R-values per assembly (roof R-value, wall R-value, rim joist) and whether spray foam, batt, or blown-in is preferred.
- Choose the drywall finish level for painted areas (Level 4, Level 5).
- Photograph any existing interior plaster profiles or textured ceilings to confirm matching approach for joints and textures.
- Tell if fire-rated assemblies are required at the addition interface and provide the required fire-resistance rating in hours.
- Document planned sequencing between insulation, drywall hang, and finish carpentry to minimize rework while the home is occupied.
Finish Carpentry, Flooring, and Millwork
- Name the flooring materials and finish (hardwood species and grade, engineered plank, tile) and whether matching to existing floors is required.
- Detail required trim profiles: baseboard height, casing profile, crown molding dimensions, and staircase newel style.
- Upload photos of existing cabinetry and millwork profiles for color, reveal, and profile matching.
- Approximate expected material lead times for custom millwork and long-lead finishes in weeks.
- Who will be responsible for selecting final paint colors and hardware finishes and by what milestone (permit, framing, drywall)?
System Balancing and Mechanical Commissioning
- Plan required commissioning tests: HVAC airflow balancing with CFM targets, hydronic pressure tests, and electrical load verification.
- Set measurable acceptance thresholds for HVAC performance (supply/return delta temps, CFM per register) to be met at final balancing.
- Explain required documentation deliverables for system commissioning: balancing report, as-built duct layout, and final equipment operations manual.
- Schedule a commissioning date window after HVAC start-up and mirror the homeowner's least disruptive days for testing.
- Assign responsibility for recording test measurements and storing commissioning documents in the project folder.
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Agreement & Commitment
Finalize contract terms, payment schedule, contingency allowances for concealed conditions, and permit/inspection responsibilities.
Agreement Modules
- Master Construction Agreement (MCA)
- Statement of Work (SOW)
- Payment Schedule Agreement
- Concealed Conditions Contingency Addendum
- Permit & Inspection Responsibilities Addendum
- Change Order Agreement
- Authorization to Proceed (Notice to Proceed)
- Lien Waiver & Final Payment Release
- Warranty & Final Acceptance Terms
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Construction Execution
Operationalize construction with readiness checks, execution, and final acceptance.
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Pre-Construction Readiness
Capture concrete site readiness facts — access windows, utility tie-ins, staging areas, homeowner living preferences, and confirmed permit statuses.
Pre-Deployment Questions
Environment and site access
- Worksite street address (exact address for permits and mobilization)
- Earliest date crews are allowed on site (so we can schedule mobilization)
Utilities, permits and approvals
- Current building permit status for the project (select the option that matches today's status)
- Which utility tie-ins will be required for this work? (select all that apply)
Staging, site logistics and homeowner living preferences
- Has a dedicated on-site or confirmed off-site staging/storage location been agreed (so we can plan deliveries and trailers)?
- If there are interior areas off-limits, temporary relocation plans, quiet-hour requirements, or other living constraints, list the exact rooms, dates, and restrictions (so we can plan protection, sequencing, and worker access).
People, timing and constraints
- Primary homeowner on-site decision maker (name and best contact method) — who the crew should contact for day-of decisions
- List any hard blackout dates or immovable scheduling constraints when no work may occur (or enter 'none') — these will be excluded from the mobilization window.
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Construction Schedule & Execution
Coordinate the build sequence, task ownership, on-site controls for dust and noise, inspection milestones, and communication cadence while the family remains in the home.
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Final Acceptance & Punchlist
Confirm completed scope, verify inspections and permits, resolve punchlist items, and obtain homeowner sign-off required for final payment and closeout.
Checklist items
- Receive final permit closure document from authority having jurisdiction
- Obtain signed system commissioning and inspection reports
- Confirm completion and verification of punchlist items
- Log any remaining items as warranty entries with owner and due date
- Collect final financial closeout documentation
- Obtain homeowner final acceptance and project closeout signature
- Deliver handover package and as-built documentation to homeowner
- Confirm final site cleanup and restoration completed
- Verify safety and energization records closed
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Warranty & Outcomes
Validate outcomes against success signals, log warranty items, and manage ongoing issues or enhancement requests.
Success Reviews
- Warranty Kickoff and Handover
- First Warranty Measurement
- 90-Day Outcomes Review and Warranty Resolution Plan
- Quarterly Warranty and Outcomes Review
Issues & Enhancements
- If a systemic defect is identified, draft a corrective action recommendation for construction standards or subcontractor scope adjustments.
- Present 90-day outcome metrics
- Quantify 90-day performance by percentage of warranty items closed within 30 days and homeowner satisfaction score, and assess whether these meet the expectations stated in Construction Scope.
- Document final remediation schedules for all outstanding items or confirm that items are closed to homeowner satisfaction.
- Agree next steps for any remediation that extends beyond 90 days and record checkpoints for follow-up.
- Publish the 90-day outcomes report showing the percent closed within 30 days and the homeowner satisfaction score, and link to the Construction Scope verification criteria.
- Create timeline entries for any long-lead remediations with milestone dates and required approvals.
- Schedule any trades or inspection re-tests required to close remaining items.
- Current warranty dashboard review
- Ensure the open warranty item count and average days-to-resolve continue to trend toward the targets in Construction Scope.
- Triage new homeowner enhancement requests and decide immediate disposition for each.
- Identify any systemic issues requiring process or detail changes and document recommended preventive actions.
- Update the warranty dashboard with current open counts and average resolution time and circulate to stakeholders.
- Log disposition decisions for each enhancement request and, where accepted, create a scoped follow-up task or quote item.
- Reconfirm scope, warranty terms, and verification criteria
- Warranty coverage and the measurable verification criteria in Construction Scope are confirmed and understood by all parties.
- All as-built documents and permit/inspection records are uploaded and accessible to the homeowner and the project team.
- The warranty reporting workflow and communication cadence are agreed and an initial set of remediation actions are recorded.
- Publish the warranty register and the reporting instructions to the shared workspace.
- Upload final as-built drawings, HVAC balancing report, and permit close documents to the project folder.
- Log any immediate open items identified in the walkthrough with target completion dates.
- Present the warranty log and early outcome metrics
- The current warranty performance is quantified by the number of open warranty items and the median days to resolve those items.
- Root causes for the top recurring issues are identified and a remediation plan with dates is agreed.
- Any concealed-conditions impacts are documented and next steps for resolution are agreed.
- Update the warranty register with the agreed remediation tasks and target completion dates.
- Produce a short root cause summary for any recurring defect and circulate to the project team.
- If the concealed-conditions contingency was used, publish the expenditure summary and justification to the shared workspace.
- As-built and permit handover
- Match outcomes to verification criteria
- Status review of outstanding warranty items
- Triage enhancement and minor improvement requests
- Finalize long-lead or phased remediation plans
- Warranty logging process and communication cadence
- Persistent defect detailed review
- Root cause analysis for recurrent issues
- Homeowner experience and living-in-place adjustments
- Short checklist and next-step confirmations
- Initial site verification and immediate open items
- Remediation plan and timetable
- Agree immediate remediation actions and owners
- Contingency and concealed-conditions review