You own two lots side by side, and you want them to act as one. Owning both does not make them one lot in the eyes of the city. A lot survey is the first real step, because it maps both parcels and shows what stands in your way. Combining lots can open the door to a bigger build and one clean tax bill. It can also trip you up with easements, old liens, and zoning rules you never saw coming.

Why homeowners combine two lots

The most common reason is room to build. Two small lots merged into one give you a larger footprint for a house, a pool, or a shop. A single big lot often carries fewer building limits than two cramped ones.

There are money reasons too. One lot means one tax parcel, one bill, and simpler records. It can also make a future sale cleaner, since a buyer sees one clear piece of land instead of two.

Some owners combine lots to erase the line running through the middle. That interior line forces setbacks on both sides, which eats up usable space. Remove it and you free up the ground in the center.

Start with a lot survey

Before you file any paperwork, order a lot survey from a licensed surveyor. This survey measures both parcels and marks the true lines, corners, and any overlaps. A combined lot survey also helps support the legal and technical documentation required for the lot merger. Without it, the city has no accurate record to combine.

The surveyor also writes a new legal description for the single combined lot. That description goes into your new deed and your application. Skip this step and your request stalls at the counter.

A good lot survey does more than draw lines. It catches problems early, while they are still cheap to fix. That is worth far more than the fee you pay for it.

What the survey has to show

The drawing needs to give the city a full picture of both parcels as one. Here is what it should include.

• The exact lines and corners of each original lot
• Any easements crossing either parcel
• Structures, fences, or driveways near the shared line
• Encroachments from or onto a neighbor’s land
• A fresh legal description for the merged lot

If any of these are missing, expect delays. The reviewer will send it back and ask for more. A complete survey up front saves you weeks.

The approval no one warns you about

Combining lots is not a private deal between you and your surveyor. Your city or county has to approve it, usually through a lot combination or replat process. You file an application, the survey, and the new legal description, then wait for review.

Zoning rules decide whether the merge is even allowed. Some areas require a minimum or maximum lot size, and your combined parcel has to fit. Check with the local planning office before you spend a dollar, because a “no” here ends the project.

Approval can take weeks or months, depending on the office and the workload. Build that time into your plans. A rushed timeline is the fastest way to get frustrated.

Easements and utilities on the old line

That shared line between your lots may carry more than dirt. Utilities often run easements along old lot lines, and those do not vanish when you merge. The power, water, or drainage rights can stay in place even after the line is gone.

Your surveyor flags these on the drawing. You may need the utility to release or move the easement before you build over it. That process takes its own time and sometimes its own fee.

Do not assume you can pour a foundation over a buried line. A utility crew can force you to tear it out later. Handle the easement first, then build.

Mortgages, liens, and taxes

If each lot has its own mortgage, your lender has to sign off on the merge. Two loans on two parcels do not simply blend into one. Talk to your lender early, since a surprise here can freeze the whole plan.

Old liens work the same way. Any claim against either lot has to be cleared or handled before the combination goes through. A title check will surface these so nothing hides in the paperwork.

Taxes shift once the merge is final. You move from two parcels to one, and the county updates its records and your bill. Confirm the new assessment so the change does not catch you off guard.

Before you commit

Combining lots is hard to undo. Once the line is gone and the deed is rewritten, splitting them again means starting a whole new process. Be sure you want one lot before you erase the middle.

Think about resale too. A single large lot appeals to some buyers and turns off others who wanted two build sites. Weigh that against your own plans for the land.

The smart move is simple. Order the lot survey, check zoning, clear easements and loans, then file. Do the homework first and the merge goes smoothly.

What it comes down to

Two lots become one through survey, approval, and clean paperwork, not just ownership. A lot survey maps both parcels, writes the new legal description, and flags the easements and encroachments that could stall you. Sort out zoning, utilities, and any loans before you file. Get those in order and you end up with one larger lot ready for a bigger project.

Frequently Asked Questions

Do I need a lot survey to combine two lots?

Yes. Combining two lots typically requires a current lot survey and a new legal description prepared by a licensed land surveyor. These documents help local authorities review and process the lot combination application.

How long does it take to combine two lots?

The timeline depends on local review procedures and project complexity. While the survey work may be completed within days or weeks, the approval process through the local planning or land development department can take significantly longer.

Can I combine two lots if they have separate mortgages?

Possibly, but approval from the mortgage lenders is often required. Because each parcel may have separate financing, property owners should consult their lenders before beginning the lot combination process.

Will combining two lots affect property taxes?

It can. After the parcels are combined, the local tax authority may reassess the newly created property. The resulting property tax amount depends on local assessment policies and the characteristics of the combined parcel.

Can a combined lot be divided again later?

In many cases, yes, but it generally requires a new subdivision or lot split application, updated surveys, and approval from the appropriate local authorities. The process can be more involved than the original lot combination.