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Due Diligence

22 articles

An excavator grades a staked building pad, with a laser level on a tripod at leftDue Diligence

Floodplain Development Permit: What It Covers and How to Get One

A floodplain development permit is the local permit for building, filling or grading in a mapped flood zone. What it covers and how to get one.

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Floodwater covering a residential street up to a roadside mailboxDue Diligence

Your Customer's Lot Is in a Flood Zone. Can You Build? A Builder's Step-by-Step Guide

Building in a flood zone or floodplain starts with a local permit and a surveyor. Eight steps from map check to final certificate, in plain words.

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Grade stakes and a laser level set on a cleared building siteDue Diligence

Elevation Certificates: A Builder's Guide to Timing, Cost and What Gets Measured

An elevation certificate records how high a house sits against the base flood elevation. Who signs it, when you need it and what the surveyor measures.

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Single-family homes surrounded by floodwater in a residential neighborhoodDue Diligence

Flood Insurance on New Construction: Why Meeting Code Doesn't Set Your Premium

An elevation certificate is optional for NFIP flood insurance now, but it can affect the rate. Why meeting code and your premium are separate.

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Cutaway illustration of a crawlspace foundation with a flood vent low in each wall, floodwater at the same level inside and out, and the floor framing above the waterDue Diligence

Flood Vents: Requirements, Engineered vs Non-Engineered, and How Many You Need

Flood vents let water in and out of a crawlspace below the BFE. See the 1 square inch rule, engineered vs not, and a worked example.

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Cutaway of a house on tall stem walls with the base flood elevation marked, showing how the floor height sets the wall height, crawlspace rock, flood vents, raised equipment and stairsDue Diligence

How to Build a House in a Flood Zone: Design Decisions in Order

How to build a house in a flood zone: start with the required floor height, then walls, crawlspace, fill and stairs. Each choice sets the next.

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Side-by-side illustration: a house on natural high ground above the flood level, and a house on a raised pad of compacted fill above the flood levelDue Diligence

LOMA vs LOMR-F: How to Get a Lot Out of the Flood Zone

LOMA, LOMR-F and LOMR are three different FEMA letters. Here is which one fits a lot, who does the work, and what fill has to do with it.

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Two images side by side. Left: street-level view of a two-lane road curving out of sight, with a steep, heavily vegetated bank rising above the pavement. Right: aerial view in the SiteFacts App of a wooded vacant lot outlined in green, set above the curving road, with homes around it.Due Diligence

This Lot Fronts a Public Road. It May Be Landlocked Anyway.

A lot on a paved county road may still have no approvable driveway. A 1990s survey, a voided plat process and a missing easement show how it happens.

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Vacant lot on low ground beside a small creek, with a band of dried stems and twigs in the grass from past high waterDue Diligence

Base Flood Elevation: How to Tell if a Lot Is in a Flood Zone Before You Buy

Base flood elevation is the water height of a 1% annual chance flood. How to check a flood zone, what the letters mean, and what to ask before closing.

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Raw vacant lot seen from the road edge, with a plain wooden stake in the grass and open land beyondDue Diligence

Land Feasibility Report: When to Order One and Who Pays

Order a land feasibility report inside your contract's investigation window. Who pays depends on the contract. What to tell a buyer client, and when.

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Dry grass field in late summer with a diagonal band of green cattails and sedges running through it, conifers along the horizonDue Diligence

Wetland Delineation: How to Tell if a Property Has Wetlands Before You Buy

A blank wetlands map and dry ground don't mean a lot is clear. What a wetland delineation is, how to check before you buy, and what to ask first.

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Aerial view of rural land divided into parcels of different sizes, with old fence lines, a farmhouse on a small parcel and a newer subdivision at the edgeDue Diligence

Legal Lot of Record: What a Tax Lot Number Doesn't Prove

A tax lot number and a recorded deed don't prove a lot was lawfully created. What legal lot verification is, when it comes up, and what to ask first.

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Aerial view of a rural parcel outlined in yellow, with high-voltage power lines running across it between a forest and a plowed fieldDue Diligence

The Listing Said Power Was Available. The Lines Were Transmission.

Power lines along a parcel don't mean usable power. How to tell transmission from distribution lines, and what one power line easement took on a real parcel.

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Illustration: empty lot with earlier designs for up to 8 doors; its water meter serves 1 small homeDue Diligence

How Much House Can an Infill Lot Hold? Start With the Water Meter

Water meter size can cap an infill lot's density. This lot was eligible for middle housing, but the supplier would serve one small home. What to ask first.

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Top-down aerial view of a grid of nine separate customer lots, six outlined in white and three in red: one covered in tight slope contour lines, one crossed by a stream, and one with a dashed utility line running in from the road.Due Diligence

Running 170 to 200 On-Your-Lot Homes a Year Showed Me Where Land Due Diligence Breaks

Who ends up checking the customer's lot as an on-your-lot builder grows, what that cost us, and what changed when I did it before the contract.

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Oblique aerial of a wooded infill lot in an established neighborhood, with an approximate creek path in blue cutting diagonally through the parcel and a generic floor plan for scaleDue Diligence

Why Is That Infill Lot Still Vacant?

Every reason to buy was on paper. Every reason to walk was under the trees. A Pacific Northwest infill case study, and the seven checks to run before you buy a vacant lot in the city.

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What Land Buyers Find Out Too LateDue Diligence

What Land Buyers Find Out Too Late

The listing isn't wrong. The city isn't wrong. Nobody asked the next question. Here's what slope, zoning, and utilities can cost when you find them after the offer instead of before.

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The Landlocked Lot That Wasn'tDue Diligence

The Landlocked Lot That Wasn't

A Florida lot priced as landlocked hid a recorded access easement and a wrong flood zone, up to $180,000 in value that a title report missed. The difference was researching three parcels instead of one.

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What a Dead Permit File Revealed for an ADU InvestmentDue Diligence

What a Dead Permit File Revealed for an ADU Investment

A commercially zoned lot with an old residence can carry grandfathered residential rights, and an abandoned permit file can hand you sewer, power, and parking answers before you ever call a builder.

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What Is a SiteFacts Report? Your Land Feasibility Cheat CodeDue Diligence

What Is a SiteFacts Report? Your Land Feasibility Cheat Code

A SiteFacts Report is a plain-English due-diligence file that tells you whether a piece of land is actually buildable, before you spend a dollar on design or closing.

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Don't Trust the Fence: Why a Land Survey Is a Must Before You BuyDue Diligence

Don't Trust the Fence: Why a Land Survey Is a Must Before You Buy

A fence is not a property line. It just looks like one. On a tight lot, that gap can erase your entire build, and a survey is the only way to know before you're stuck with it.

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What Is Due Diligence, and Why Do You Need It Before Buying Land?Due Diligence

What Is Due Diligence, and Why Do You Need It Before Buying Land?

Due diligence is the homework that separates a good land deal from a money pit. Here's what it actually covers, and why it belongs before the offer, not after.

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