We know what plan checkers want before we submit.
HomeWiP guides homeowners from backyard idea to approved building permit — with the kind of permit expertise that keeps your project from stalling in plan check.
- 7+Years in the ADU market
- 20+Cities and Counties served
- 100%Focused on pre-construction
For years, we watched homeowners start ADU projects full of momentum — and then disappear into the permitting process.
A designer would produce beautiful plans. The homeowner would submit to the city. The city would send back plan check comments. More comments. More revisions. Months would pass. Sometimes years.
The issue was almost never the design. It was that the plans had not been prepared for what the specific city or county actually requires at plan check. Different jurisdictions have different standards, different reviewers, different sticking points.
HomeWiP was built to change that.
The typical homeowner journey
Permit-ready submission beats months of plan check comments.
- Submit plans to city
- Plan check comments
- Revise & resubmit
- More comments, months pass…
- Permit-ready submission
- Minimal comments
- Approved
Our approach
Idea to permit. Then we hand you to a builder.
We guide homeowners through the three phases that matter most before construction begins. 100% of our approved plans get built.
Browse our library of pre-designed ADU floor plans. Select a plan that fits your property and see a real cost estimate — no paywall, no commitment.
Why HomeWiP
We are the only party in the ADU project that speaks three languages - design, permit and construction.
We are tuned to navigate building codes, site specifics and utility restrictions simultaneously. That means when we tell you a custom ADU will work better for your lot than a modular unit, we mean it. When we flag a plan that is likely to generate plan check comments, it is because we have seen it happen — not because we have an alternative to sell you.
Permit expertise
We prepare plan sets around city-specific requirements. Fewer plan check comments means faster approval and a project that actually moves forward.
Neutral guidance
We know the players — which designers know local codes, which modular systems create complications. We share what we know without an agenda.
7+ years in the market
We have been in the ADU space long enough to know what goes wrong and why. That experience is the platform.
Behind the scenes
The technology behind the service
Built on technology we engineered ourselves.
2D → 3D, automatically
Image-recognition models convert existing floor plans and site drawings into editable 3D geometry — no manual redrawing.
Photorealistic rendering
Interior and exterior are rendered to photographic quality on demand, so a design is fully understood before construction begins.
Placed on the real lot
Models overlay directly onto Google Maps satellite imagery — the ADU is positioned on the actual property, not an abstract pad.
Material take-offs → early budgets
Because every design is true 3D, the system estimates material quantities to drive preliminary budgets early in the process.
Structured site review
A guided assessment of 12+ site conditions flags issues that move budgets and timelines — surfaced upfront, not at plan check.
Augmented reality
Models convert to AR and drop into a real backyard — the way you would try on clothes online, scaled to the actual space.
Our community
Built for homeowners. Trusted by builders.
Two distinct audiences with one shared interest — making ADU projects actually happen.
- Browse floor plans
For homeowners
If you have been thinking about adding a backyard home and are not sure where to start — or have started and hit a wall — HomeWiP is built for you. No prior experience required. We meet you at the idea stage and walk with you through plan selection, permit preparation, and builder connection.
- Join the ADU builder network
For builders
We work with a select network of vetted general contractors. HomeWiP delivers build-ready clients — homeowners who arrive with an approved permit, a clear scope, and a project ready to start.
Where we work
Serving Bay Area
HomeWiP is focused on the Bay Area because that focus is what allows us to do this well. We know the plan check requirements across the jurisdictions here — what gets flagged, what reviewers are looking for, and what a permit-ready submission looks like in each city.
We are building — and we will expand when the platform is ready to deliver the same depth of guidance in new markets.
Not sure if an ADU is right for your property?
Talk to us
Schedule a free 30-minute planning call. We'll look at your lot, talk through what is feasible, and give you an honest read on the process — including the parts other ADU services do not mention.
No commitment. No salesperson. Just clarity.