What should I check before buying a property for ADU or DADU potential?

Check zoning, lot size and shape, setbacks, access, utilities, stormwater, trees, permit history, and whether the city path supports the intended ADU, DADU, middle housing, or remodel strategy.

Can a feasibility snapshot tell me if I should write an offer?

A snapshot can flag whether the property deserves a deeper review before an offer, but it is not a city determination, survey, permit approval, architectural design, engineering review, or legal advice.

Why is cheap vacant land risky?

Cheap vacant land may have access, utility, septic, well, critical area, slope, flood, easement, zoning, fire access, or stormwater problems that make development difficult or expensive.

PRE-OFFER PROPERTY SNAPSHOT

Before you write the offer, scan the property.

Quick, local property feasibility intelligence for buyers, investors, landowners, and small developers before they spend money on the wrong path. Lot & Line reviews early signals for ADU, DADU, middle housing, remodel expansion, vacant land, permit rescue, and small development opportunities across Tacoma, Seattle, Bellevue, Kirkland, Everett, and Puget Sound.

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What is a Pre-Offer Property Snapshot?

A Pre-Offer Property Snapshot is a fast, address-specific review that helps a buyer or investor decide whether a property deserves deeper due diligence before writing an offer, waiving contingencies, negotiating price, or spending on drawings. It is built for people asking: Can I build an ADU here? Can this Tacoma lot support more units? Is this vacant land too good to be true? Is the listing overselling development potential?

The free version gives a first-look screen. The paid version goes deeper into zoning path, site red flags, permit questions, utility/access concerns, and next steps.

Best for buyers and investors who are asking:

Can I build an ADU, DADU, duplex, triplex, fourplex, or middle housing here?
Is this listing's “ADU potential” or “development opportunity” language actually worth checking?
What should I verify before closing on a house, infill lot, or vacant land?
Could a permit, stormwater, utility, access, tree, slope, or zoning issue kill the deal?
Should I walk, renegotiate, pause, or pay for a deeper feasibility review?

What we look for in the first pass

Parcel, zoning, allowed-use, and middle-housing signals.
ADU/DADU, duplex, triplex, fourplex, remodel, and land-use paths worth exploring.
Access, alley, driveway, parking, utilities, stormwater, tree, slope, and critical-area questions.
Permit history clues, expired or canceled permits, and likely city review issues.
Whether the next step should be free snapshot, paid report, pre-app question list, permit rescue, or full development support.

Free vs. paid review

Entry

Free Feasibility Snapshot

One-page first-look summary.
Possible paths worth reviewing.
Top red flags to verify.
Recommended next step.
Best for early curiosity or one active property.

Start Free

Buyer / investor

Pre-Offer Property Snapshot

$500

2–4 page address-specific review.
Zoning and permit-path questions.
ADU/DADU and middle-housing path options.
Land, access, utility, stormwater, and site red flags.
Questions for agent, seller, city, and consultant team.
Short next-step roadmap before offer or closing.

Ask About Paid Snapshot

Deeper review

Feasibility / Permit Path Review

From $1,500

More detailed code and site review.
Option matrix for project paths.
Consultant roadmap.
Pre-app or city question list.
Risk and action plan for serious deals.

Discuss Project

Cheap land is often cheap for a reason.

Vacant land can look like the easiest path into development because there is no old house to tear down and the listing price feels low. But the hidden cost is usually in the site: legal access, road standards, utility extension, septic or sewer feasibility, well/water availability, stormwater, slope, critical areas, fire access, easements, title issues, tree rules, environmental review, and whether the jurisdiction will allow the use you imagine.

A $60,000 parcel can become more expensive than a $180,000 parcel if the cheaper site needs a long utility extension, engineered septic, geotech, critical-area studies, road improvements, or a permit path that does not match the buyer's plan.

Read Land Red Flag Scan Scan a parcel

Questions buyers and investors usually ask

Can a property be marketed as ADU potential?

Maybe, but “potential” should be supported by zoning and site checks. The safer phrase is that the property is worth reviewing for ADU/DADU or middle-housing potential, subject to city verification.

Can I use this before making an offer?

Yes. The paid pre-offer version is designed to help buyers and investors understand what to verify during the offer, contingency, or due-diligence window.

Does this replace a survey, architect, engineer, or city review?

No. It helps identify what should be reviewed next and which professionals may be needed before major money is spent.

What cities are the best fit?

The strongest fit is Tacoma, Seattle, Bellevue, Kirkland, Everett, Pierce County, King County, Snohomish County, Kitsap County, Thurston County, and surrounding Puget Sound markets.

Send one address before the deal gets expensive.

Start with the free snapshot. Upgrade only if the property deserves deeper review.

Start Free Feasibility Snapshot Ask About Paid Review