Modern two-storey house with a swimming pool and palm trees

San Diego Drafting Services

Streamline Design provides expert drafting, permit, and code-compliance support, helping residential and commercial projects move from concept to approval faster and with less stress.

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Our Professional Affiliations

  • BBB Accredited Business logo
  • Casita Coalition logo
  • NARI logo
  • Building Industry Association of San Diego County (BIA) logo
Design and permitting studio project
Design and permitting studio project
Design and permitting studio project
Design and permitting studio project

About

From Concept to Approval: Expert Plans & Permits

We are a full-service drafting and permitting studio that eliminates the typical headaches of building projects. Specializing in ADUs, home remodeling & additions, we handle every step from initial concept to final permit approval — so you don't have to navigate the confusing maze of regulations and requirements alone.

  • Investment-Conscious Planning

    No upfront construction investment

  • Reliability & timeliness

    Projects delivered without delays

  • Proven expertise

    20+ projects completed annually

Featured Reviews

Preferred Partners

  • Builders Now logo
  • Gottsik logo
  • ProSource Wholesale logo
  • TLK logo
Our Services

Precision Drafting Services: Bringing Your Vision to Paper

  • Small modern backyard ADU with glass doors at dusk

    Accessory Dwelling Units (ADUs)

    Design a more valuable and functional property with a thoughtfully planned ADU. From garage conversions to custom detached units, our team prepares detailed, permit-ready ADU plans and guides you through the process with clarity, speed, and confidence.

  • Person signing documents with a pen

    Code Compliance

    We navigate complex building regulations through “forensic drafting,” identifying structural components, and applying current codes. Our experts spot potential compliance issues early to ensure your plans satisfy inspectors and prevent expensive and frustrating violations or delays.

  • Modern two-story home with glass walls beside a pool

    Whole-House Remodeling

    Our drafting company creates detailed technical drawings for your entire home renovation. Our comprehensive drafting solutions document everything from bathroom reconfigurations to open-concept kitchens, providing precise plans so builders can execute your vision.

  • Sunroom addition with large windows and a wood ceiling

    Home Additions

    We draft comprehensive blueprints for home expansions — from cozy offices to master suites. Our precision-engineered documentation ensures architectural harmony, whether building upward with a second story or outward with a sunlit family room.

  • Modern two-story house with a stone and wood facade

    3D Rendering & Visualization

    From custom homes to commercial developments in San Diego, we turn plans into photorealistic 3D renderings that bring your vision to life. Our visuals help you refine designs, secure approvals, and move forward with confidence before construction begins.

  • Couple smiling at a laptop in a wood-paneled room

    Commercial Tenant Improvements

    From sleek medical offices to vibrant retail spaces, we draft comprehensive technical documents that transform empty shells into functional and thriving business environments. Our precise plans provide the framework for creating professional spaces that drive success.

  • Hands typing on a laptop

    CAD Conversion

    Our team converts your PDFs, scans, and paper plans into clean, editable CAD files for your project. We rebuild linework, layers, and symbols into accurate DWG/DXF drawings so contractors and consultants can revise, coordinate, and move forward without redrawing from scratch.

  • Hand stamping a document at a desk

    Building Permit Services

    Don't let permits slow you down. Our permit specialists navigate complex regulations and city departments with precision and efficiency. From technical drafting to final approval, we're the trusted experts homeowners rely on to keep projects moving smoothly through the approval process.

  • Mid-century modern single-story home with a patio

    Custom Home Design

    Turn your vision into detailed residential design plans. From spacious great rooms to efficient kitchens, we create precise technical drawings documenting your dream home. Our comprehensive drafting services transform your ideas into builder-ready construction documents.

  • Hands drafting a floor plan beside a model house

    ADU Feasibility Studies

    A professional evaluation reviews zoning rules, site conditions, utilities, and development potential to determine what ADU can be built on your property. It provides clear insight into project feasibility, estimated costs, and the next steps before design or construction begins.

  • Gavel, stamp and hard hat on architectural plans

    Unpermitted ADU Legalization

    Legalize your unpermitted ADU with retroactive building permits in San Diego. We evaluate existing construction, prepare as-built plans, coordinate with the city, and guide your project to full code compliance.

  • Hand lifting the roof of a model house on floor plans

    House Layout Redesign & Remodel Floor Plans

    Floor remodel plans turn layout changes into clear drawings that contractors can price and build from. The plan set includes walls, dimensions, and notes to guide everything from demolition to finishing, ensuring accuracy when reconfiguring living areas, kitchens, bathrooms, or bedrooms.

Modern two-storey house with wood siding, a front stair and a landscaped yard

Ready to Transform Your Home?

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Get your complimentary project consultation today and let our expert team create the technical plans for your next residential project.

Contact Us Now
Latest Projects

Crafted Excellence: Our Blueprint Portfolio

From detailed home addition plans to innovative ADU drawings, explore how our drafting expertise has helped homeowners turn their vision into permit-ready documents for extraordinary living spaces.

  • 425 sf
  • 1 Bed
  • 1 Bath
ADU New Construction in Saratoga
Attached ADU

ADU New Construction in Saratoga

  • 2,136 sf
  • 2 Beds
  • 2 Baths
ADU New Construction in Dos Amigos
Detached ADU

ADU New Construction in Dos Amigos

  • 2,225 sf
  • 4 Beds
  • 4 Baths
Home Remodel and Addition in Winnett
Whole House Remodeling

Home Remodel and Addition in Winnett

Process

Your Dream Project Deserves a Proven Approach

We've streamlined every step of the process to make your project journey smooth and worry-free:

  • 01

    Research & Development

    Our journey begins with thorough research and creative exploration, transforming your ideas into actionable plans.

    Woman thinking at a table with notes and a laptop
  • 02

    Design Development

    We craft detailed designs that perfectly align with your vision, ensuring every element serves a purpose.

    Two people reviewing a 3D house model on a computer screen
  • 03

    Consultant Coordination

    Our team works seamlessly with expert consultants to refine and optimize every aspect of your project.

    Young man in a meeting explaining something with a pen
  • 04

    Permit Management

    Navigate approvals with confidence — we handle all documentation and agency requirements with precision.

    Hand stamping a paper document
  • 05

    Contract Completion

    Clear agreements and detailed scopes of work keep your project on track from start to finish.

    Hands over a contract beside a laptop
Service Area

Serving Southern California: From Coast to Inland

We serve Southern California's diverse communities across four counties, providing professional drafting and permitting expertise.

  • San Diego County

    • Carlsbad
    • Escondido
    • Oceanside
    • San Diego
    • San Marcos
  • Riverside County

    • Lake Elsinore
    • Menifee
    • Murrieta
    • Temecula
    • Wildomar
  • Orange County

    • Aliso Viejo
    • Lake Forest
    • Mission Viejo
    • Newport Beach
    • Irvine
  • Los Angeles County

    • Los Angeles
    • Pacific Palisades
    • Porter Ranch
    • Santa Clarita
    • Sylmar
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Contact Us

Need Professional Drafting & Permitting Services?

Skip the headaches of permitting and design — schedule a call with our seasoned professionals!

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