Services  /  Feasibility Study

The Feasibility
Study.

A written recommendation that tells you what would work best for your property, what it'll realistically cost, and where the constraints sit, before you commit to a design team. It's optional. Most clients still want it.

Why It Matters
Why People Do It

Catch 130+ variables before they catch you.

A surface-level zoning check tells you 10% of the story. A feasibility study reads your specific lot, your municipality's rules, your setback envelope, your slope, and the trade-offs between ADU types, so you start design with a real answer instead of an assumption.

01

Sets expectations early

No mid-project "we didn't realize…" conversations. The budget you start with is the budget you end with.

02

Reveals hidden costs

Utility conflicts. Grading needs. Foundation surprises. Easement quirks. Better to know now, when you still have flexibility.

03

Avoids the worst case

If your lot doesn't pencil, we tell you in week 2, not after $40K in design fees. A "no" you can act on is worth a real number.

04

Locks in the math

When the design starts, it's grounded in real numbers. No "we'll figure that out later" floating around the spreadsheet.

What You Actually Get

The deliverables.

Each feasibility lands on your desk as a single written report. No drawings, no schematics, no construction documents, just a clear, honest read on what would work best for your property.

/01

Lot Read & Photo Set

A walk-through of your property, corners, slope, neighbor sightlines, where an ADU could realistically sit, captured in field notes and photos you'll see in the final report.

/02

Zoning & Code Analysis

Setbacks, height limits, FAR, lot coverage, and overlay constraints (coastal, hillside, historic, fire), worked out for your specific lot in your specific municipality.

/03

ADU Type Recommendation

Detached vs. attached vs. JADU vs. garage conversion, the option (or two) that would work best for your property, with the trade-offs laid out plainly.

/04

Cost Range & Timeline

A realistic $/sf range benchmarked for your municipality, padded with a ~20% inflation buffer on materials and labor so the number you plan around holds up. Plus design + permit + build timeline framing.

Inside A Feasibility Study Scroll  ↓  phases slide across  →
Stage 01 · Read 01 / 04

Lot Walk.

Emmanuel meets you at the property and walks it, corners, slope, neighbor sightlines, where an ADU would actually sit. The first 30 minutes on the lot tell us more than any report.

  • Corner pins, we locate them or note they're missing
  • Slope read, visual + tape, before any survey
  • Neighbor sightlines, where windows would land, where they wouldn't
  • Photo set, captured for the final report
Stage 02 · Research 02 / 04

Code Math.

Back at the studio, we pull your zoning, easements, and recorded constraints, then run the setback / FAR / lot-coverage math against your specific lot shape.

  • Zoning lookup, current district rules for your municipality
  • Setback envelope, the buildable footprint, described in plain language
  • FAR / coverage check, existing house counts here too
  • Overlay flags, coastal, hillside, historic, fire
Stage 03 · Cost 03 / 04

Budget Frame.

A realistic $/sf cost range, benchmarked against your municipality, site conditions, and finish-level assumptions. We pad each line with a ~20% inflation buffer so the number you plan around holds up against shifting material and labor prices.

  • Design + permit fees, written, fixed
  • Construction range, low / mid / high finish
  • City + impact fees, per municipality, with waivers flagged
  • 20% buffer noted, baked into every range so you're not blindsided
Stage 04 · Deliver 04 / 04

The Report.

Everything above, bound into a single PDF you own forever, walked through with you in a 60-minute review session. Then you decide what to do next.

  • Full PDF, yours to keep, share, shop around
  • 60-min review, in person or video call
  • Recommended ADU type, what would work best for your property, no pressure
  • Honest "no" if needed, with what would change the math
The Math, Visualized

A $1,000 spend that moves a $400,000 number.

Two ways the numbers tend to work out, the cost of skipping feasibility, and the lift in clarity when you don't.

Hidden-Cost Surprises · By Project With vs. without a feasibility study
0% 20% 40% 60% 80% WITH FEASIBILITY DWELLTRY clients ~12% WITHOUT industry baseline ~38%

Projects that skip feasibility hit a surprise cost (> $5K) roughly 3× more often. The most expensive ADU line item is almost always the one nobody saw coming.

Feasibility Spend vs. Risk Avoided The leverage of a $1,000 line item
$0 $15K $30K $45K $60K $75K YOU SPEND feasibility fee $1,000 YOU AVOID median surprise ~$28K WORST CASE avoided ~$65K ~$65K

Median ADU surprise we've helped clients avoid: ~$28K. Worst case we've seen prevented: closer to $65K (a sewer-lateral rebuild discovered during permit). $1,000 of foresight returns ~28× on average.

It's Optional

When to do it. When to skip it.

We never make feasibility mandatory. Here's our honest read on which path fits which situation.

Do It If
  • You don't know your zoning or setbacks.
  • Your lot has a slope, easement, or weird shape.
  • You're financing, lenders love a real budget.
  • You're between ADU types and want clarity.
  • You want a real number before committing to design.
  • You've been quoted wildly different prices by others.
Skip It If
  • You already have a feasibility from another studio.
  • You know exactly what you want and your lot is simple.
  • You're ready to commit to design and trust the path.
  • You've built or permitted on this lot before.
  • You're doing a garage conversion (lower risk profile).
  • You're moving fast and budget allows for surprises.
Ready When You Are

Start with a free call.

If feasibility is the right next step for you, we'll start it right after. If it isn't, we'll tell you. Either way, you'll know more after 30 minutes than you do right now.