What is an ADU (Accessory Dwelling Unit)?

An ADU (Accessory Dwelling Unit) is a secondary housing unit on a single-family residential lot. Also called a granny flat, backyard cottage, in-law suite, or garage conversion. ADUs can generate rental income of $1,200–$2,500/month.

Do I need permit-ready plans for an ADU?

Yes — to build an ADU legally, you need permit-ready (PE-stamped) engineering plans accepted by your local building department. QuiPlans provides PE-stamped structural drawings prepared by licensed engineers in 26 U.S. states.

How much does it cost to build an ADU?

ADU construction costs typically range from $80,000 to $300,000+ depending on size, location, and finishes. A studio ADU (400 sq ft) typically costs $80K–$140K. A 2-bedroom ADU (750 sq ft) typically costs $150K–$250K.

How long does it take to get permit-ready ADU plans?

QuiPlans delivers PE-stamped permit-ready plans in 10–14 business days. Instant downloadable architectural drawings are available immediately after purchase.

Which states do QuiPlans engineers work in?

QuiPlans licensed engineers cover 26 U.S. states including California, Texas, Florida, Colorado, Arizona, Georgia, Nevada, Washington, Oregon, Illinois, and more.

Admin Audit Console | QuiPlans

Admin Audit Console on QuiPlans. Professional floor plans and permit-ready engineering services trusted by builde.

Data types

AdminActivityLog
AdminDocument
AdminTaskDaily
AdminTaskWeekly
AduAnalyzerLead
AduAnalyzerPlan
AduAnalyzerSettings
AduLead
AduLeadHistory
AduRoiConfig
AuditFinding
BookingConfig
BuilderAccount
BuilderLead
CTARegistry
CheckoutAttempt
ConsultationRequest
ConsultationSettings
ContentItem
CustomizationRequest
DashboardMetric
EmailCTARegistry
EmailCampaign
EmailClickLog
EmailEvent
EmailLog
EmailRegistry
EmailRevenueAttribution
EmailSequence
EmailSequenceMetrics
EmailStep
EmailTemplateApproval
EngineeringConversion
EngineeringLead
EngineeringServiceAgreement
ExternalUser
FreePlanSession
FunnelGoalScenario
FunnelPerformance
FunnelPerformanceSnapshot
FunnelStep
FunnelTarget
GrowthTask
HelpArticle
HighTicketDeal
IntegrationStatus
IntegrationsConfig
LaunchBlocker
LaunchChecklistItem
LaunchTask
Lead
LicenseProfile
LotPricingRule
LotReviewRequest
MarketingLink
Order
PasswordResetToken
PaymentOption
PermitProfile
Plan
PlanDataSheet
PlanDownloadRecord
PricingMatrix
PricingPerformance
PricingTarget
ProjectDetails
ProjectionScenario
PropertyVerificationReport
Purchase
QASession
QASessionRSVP
QATestRun
QuigAduAnalyticsEvent
QuigAduLeadScore
QuigCashoutRequest
QuigProduct
QuigReferral
QuigSettings
QuigTransaction
QuizSession
ReferralCampaign
ReferralLevel
ReferralMilestone
RegionalMetrics
Report
RoiDefaults
RoiScenario
SalesGoal
ServiceAddon
ServicePackage
SiteConfig
SmsSendLog
SmsSequence
StateConfiguration
SupportTicket
SupportTicketMessage
SystemAlert
SystemTest
TaskReminder
TermsAcceptance
TierBenefits
TrainingProgress
UserGrowth
UserPassword
UserTier
WebsiteAuditReport
FunnelPerformanceTarget
Promotion