BAY AREA ARCHITECTURAL DRAFTING & DESIGN
Architectural Drafting & Design
Permit-ready plans for ADUs, additions, remodels, and custom homes — drafted by experienced Bay Area designers who know your city's plan-check process inside and out.
Get a Free QuoteBay Area Architectural Drafting & Design Services
9Builders provides full architectural drafting and design services for residential projects across the Bay Area. From schematic concepts through permit-ready construction documents, our in-house team delivers code-compliant drawings tailored to each city's plan-check requirements — so your project breaks ground faster.
ADU & Addition Plans
Detached ADUs, JADUs, two-story additions, and garage conversions drafted to meet AB 68/AB 881 state law and your city's local ADU ordinance.
Remodel & Renovation Drawings
Kitchen, bathroom, and whole-home remodel plans with structural details, fixture schedules, and finish specifications ready for your contractor.
Custom Home Design
Ground-up custom home design including site plans, floor plans, elevations, sections, and 3D visualizations with stamped structural engineering.
Permit-Ready Construction Docs
Complete permit submittal sets — Title 24 energy compliance, structural calcs, mechanical/electrical/plumbing details, and CalGreen documentation.
Plans That Pass Plan Check the First Time
Plan-check rejections delay projects by weeks and inflate budgets with revisions. Our drafters know each Bay Area jurisdiction's reviewers, common red-flags, and submittal nuances — so corrections are minimal and your permit gets issued fast.
Architectural Drafting & Design Cost in the Bay Area
Drafting fees are a small fraction of total project cost but determine how smoothly construction goes. Here's what to expect.
ADU & Addition Plans
ADU plans typically run $3,500–$8,500 depending on size, complexity, and whether site survey or geotechnical reports are needed. JADU plans start lower at $2,500.
Remodel & Renovation Drawings
Kitchen and bathroom remodel drawings range $1,500–$4,500. Whole-home remodels with structural changes typically run $5,000–$12,000.
Custom Home Design
Full custom home design averages $4–$8 per square foot. A 2,500 sqft home runs $10,000–$20,000 for complete construction documents and Title 24.
What's Included in Our Drafting & Design Service
Every project includes the full deliverable set required by Bay Area cities — no surprise add-ons mid-project.
Schematic Design & 3D Renderings
Initial concept drawings, floor plan options, and photorealistic 3D renderings so you can visualize the project before construction starts.
Construction Documents
Detailed permit-ready drawings including site plans, floor plans, elevations, sections, structural details, and door/window schedules.
Title 24 Energy Compliance
California Title 24 energy calculations and CalGreen documentation required for every residential addition, ADU, and new build.
Plan-Check Coordination
We submit plans to the city, respond to plan-check corrections, and coordinate revisions until your permit is issued.
Our 6-Step Drafting & Design Process
A clear path from initial idea to permit-ready plans, typically 4–10 weeks depending on scope.
Site Visit & Consultation
Schematic Design Options
Design Refinement
Construction Documents
Permit Submittal
Plan-Check Revisions
Why Choose 9Builders for Drafting & Design
Most Bay Area homeowners hire a drafter, then a separate contractor — and pay for the disconnect. With 9Builders, design and build are under one roof.
Design-Build Integration
Plans drafted by the same firm that will build them — fewer change orders, no finger-pointing, and budget certainty from day one.
Local Plan-Check Expertise
We submit plans to every major Bay Area jurisdiction monthly and know each city's reviewers, formatting standards, and common rejection triggers.
Fast Turnaround
Most ADU and addition plans complete in 4–6 weeks. Custom homes in 8–12 weeks. We hit deadlines because design is our full-time team, not a side service.
Transparent Fixed Pricing
Flat-fee drafting quotes with itemized scope — no hourly billing surprises, no scope creep charges. You know the price before we start.
Areas We Serve
We serve homeowners across the Bay Area. Click your city to learn more.
Architectural Drafting & Design Alamo
Upscale properties and spacious lots make Alamo ideal for premium ADU construction and guest house builds.
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Architectural Drafting & Design Bay Area
Region-wide coverage across 15+ cities with deep knowledge of each municipality's unique ADU regulations.
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Architectural Drafting & Design Belmont
Hillside expertise and custom engineering for Belmont's sloped lots and scenic residential neighborhoods.
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Architectural Drafting & Design Campbell
Space-smart ADU designs for Campbell's walkable neighborhoods and charming downtown community.
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Architectural Drafting & Design Cupertino
Tech-forward ADUs with smart home features, energy efficiency, and modern aesthetics for Cupertino homeowners.
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Architectural Drafting & Design Fremont
Versatile ADU solutions across Fremont's diverse neighborhoods, from Niles to Mission San Jose.
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Architectural Drafting & Design Los Altos
Luxury craftsmanship and premium finishes that match Los Altos' distinguished residential character.
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Architectural Drafting & Design Los Gatos
Elegant ADU designs that honor Los Gatos' historic charm, hillside terrain, and architectural heritage.
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Architectural Drafting & Design Milpitas
Affordable, high-quality ADUs positioned to capture strong rental demand near tech employers and BART.
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Architectural Drafting & Design Mountain View
Modern, sustainable ADU construction for Mountain View's innovation-driven community and strong rental market.
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Architectural Drafting & Design Palo Alto
Design-review-ready ADUs built to Palo Alto's exacting standards with premium materials and green building practices.
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Architectural Drafting & Design San Jose
The Bay Area's largest ADU market — hundreds of projects completed across San Jose's diverse neighborhoods.
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Architectural Drafting & Design Santa Clara
Central Silicon Valley location means strong rental demand and excellent returns on your ADU investment.
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Architectural Drafting & Design Saratoga
Estate-quality ADU construction with landscape preservation and luxury finishes for Saratoga's prestigious properties.
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Architectural Drafting & Design Sunnyvale
Efficient, modern ADUs designed to attract tech professionals and maximize rental income in Sunnyvale's hot market.
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What Our Customers Say
Our clients are at the heart of everything we do at 9Builders, and their feedback reflects our dedication to quality and service. From beautiful remodels to innovative new builds, hear how we've transformed their spaces and exceeded their expectations.
Tommy, Yuna, and their entire team were amazing from start to finish. We hired them for a big project that included foundation work, a structural retrofit, replacing the PGE main service line, and installing a new 200-amp panel. It was a pretty major job, and honestly, we couldn't have asked for a better crew to handle it. Everyone was professional, polite, and knew exactly what they were doing. They showed up on time, cleaned up every day, and were super respectful of our space.
I hired 9Builders to work on my backyard and they did an amazing job. They built a nice structure that looks really great and added so much to my yard. The team was friendly and kept everything clean while they worked. The work was done quick and looked really good. Now they're working on the front of my house to add an extension, and I'm impressed how fast they worked. They finished the foundation in just two days...
9Builders transformed our kitchen into a beautiful, functional space. They listened to our ideas, offered great suggestions, and delivered high-quality work. The team was professional and respectful throughout.