GlassBook available now
Plan With Confidence
Get a custom planning book for your ADU, SB9 lot split, or rennovation project—complete with zoning, feasibility, cost estimates, and designs to guide your next move.
Trusted by agents at top brokerages
Save time on feasibility, design, and permitting
Smarter ADU & SB9 Planning
The GlassBook helps single-family and multi-family homeowners in California transform ideas into visual planning reports—covering accessory dwelling units, SB9 lot splits, renovations, or new home builds with feasibility, cost estimates, and early concept designs.
A page from a real GlassBook
Everything you need
Built to Move Your Project Forward
Your GlassBook outlines every step of your ADU planning or SB9 lot split guide in California - from Los Angeles to San Francisco zoning rules, development paths, ROI forecasts, and timelines to move your project forward with clarity.
Smarter First Step, Lower Cost
Architects charge tens of thousands before confirming feasibility. Glassfox gives you zoning and ADU answers first—for far less in California markets like Santa Barbara and Los Angeles.
Clear Goals, Real Progress
We outline your full development path—covering ADU planning, lot splits, and California zoning. No guesswork. Just forward motion in places like Santa Barbara, CA and beyond.
Options
Pick the features you need—pay only for what matters.
GlassBook Lite
Simple Feasibility Study
No Extras Included
GlassBook
Most popular
Vetted Feasibility Study
Next-Step Vendors
Free Bonus Sections:
Simple Project Economics (Costs)
Conceptual Renderings
Market Trends
Property's Permit History
Packaged in a Hard Cover Book
GlassBook Full
Vetted Feasibility Study
Economics (Costs & ROI)
Next-Step Vendors
Free Bonus Sections:
Conceptual Renderings
Market Trends
Property History
Property's Permit History
Packaged in a Hard Cover Book
The Standard Path
With Architects
$5K-20K
Drawbacks
Risk of Redesign
High Upfront Costs
No Zoning Check
Changing Timelines
Design Before Strategy
No Cost Analysis
No Permit Roadmap
One Idea, No Options
Testimonials
What We’ve Heard
"I’ve been super happy with the work Glassfox has done for me. The planning process in California is very challenging to navigate. Using Glassfox opened doors I thought were closed from a design perspective. I would 100% recommend to anyone in the future."
Greg
Land Use Planner
"What stands out to me the most about GlassBook is the clarity that it provides. The GlassBook outlines appropriate land uses, provides various design options, and gives a range of cost estimates."
Faisel Musa
Tradesman
"This is brilliant. You should charge way more for it."
Prominent Entrepreneur
(Former CEO, name withheld)
Schedule Your Free Consultation Today
Get expert feedback on your ADU, SB9 lot split, or renovation project, and see what’s possible before you spend on plans or permits.
