Keep the location you love, replace the house.
A knockdown rebuild lets you demolish an existing home and build a new one on the same lot. Ken Clark Jr., Certified Mortgage Advisor with PRMG, explains how the existing mortgage, demolition costs, and land equity fit into a construction loan, with notes on New Jersey teardowns and California fire rebuilds.
Short answer: it is a construction loan that finances demolishing the current house and building a new one on the same lot, often as a one-time close loan with a single closing.
For many families, the lot is the prize: the school district, the commute, the street. When the existing home is too small, too dated, or too damaged to renovate, a knockdown rebuild may cost less than trying to buy a new home in the same area. If you would rather keep the structure, compare renovation loans first.
Short answer: it is typically paid off at closing, using the new construction loan. You then have one loan covering the land and the new build.
The payoff counts as part of the total project cost, alongside the builder's contract and closing costs. If you have a HELOC or second mortgage, that is paid off too. The math only works when the lot equity plus your cash covers the required investment, so we model the payoff first. See land equity.
Short answer: because the old house is coming down, the value that matters is the land plus the new home as completed. Equity above your payoff may count toward the down payment, depending on the program.
On conventional single-closing loans that follow Fannie Mae rules, an owned lot is measured against the as-completed value of the new home. Government programs have their own rules for how owned land is valued. The appraisal on plans (see construction appraisal) drives how much room you have.
Short answer: it should be included in the builder's fixed-price, turnkey contract, along with utility disconnects, debris removal, and any required testing or abatement.
Older homes can carry surprises such as asbestos or lead paint, underground oil tanks (common in older New Jersey homes), or outdated sewer laterals. Ask your builder to price these in writing before closing, because the loan cannot increase after closing. Demolition and building permits are part of the package, and in California permits are typically required before a one-time close loan closes.
Short answer: in established North Jersey towns, especially in Bergen County, buyers and owners often tear down older homes to build larger ones on valuable lots. The loan structure is the same; local permits and approvals take time.
Many New Jersey municipalities require zoning and building reviews, and some have tree, grading, or historic rules. In Bergen, Essex, Morris, and other high-cost counties, the 2026 conforming limit is $1,209,750, so larger rebuilds may move into jumbo construction territory. Your builder should be registered with the New Jersey Division of Consumer Affairs as required. More: New Jersey construction loans.
Short answer: the same one-time close structure may work for rebuilding after a fire or tearing down an older home, as long as the builder, plans, and permits are in place.
After a fire, your insurance claim, any remaining mortgage, and the cleared lot all factor in. Insurance proceeds may be applied toward the project depending on program guidelines and how your claim is handled, so bring your claim details to the first call. In the Sacramento region, older neighborhoods and foothill communities see both teardowns and rebuilds. Your builder should hold an active license with the California Contractors State License Board. More: California construction loans.
Educational illustration only. Not an actual client, loan offer, or commitment to lend.
A family in Bergen County owns a 1950s cape on a lot worth about $700,000, with a $180,000 mortgage balance. Their builder's fixed-price contract, including demolition and oil tank removal, is $620,000, and the as-completed value of the new home is $1,350,000. The construction loan pays off the $180,000 mortgage and funds the build, and their land equity covers the required investment. Because the loan amount exceeds the $1,209,750 high-cost conforming limit, the file is priced as a jumbo construction loan, subject to underwriting.
Where available: PRMG construction programs are available in every state where PRMG is licensed, which is all states except New York, including California and New Jersey, subject to eligibility and program guidelines. In California, building permits are typically required before a one-time close loan closes.
Answered by Ken Clark Jr., Certified Mortgage Advisor. Program availability and requirements vary and are subject to change.
Yes, a construction loan may finance demolition and new construction on your existing lot, subject to program guidelines, builder registration, appraisal, and underwriting.
It is typically paid off at closing using the new construction loan.
It should be included in the builder's fixed-price contract and budget, along with disconnects, debris removal, and any required abatement.
No. The home is demolished, so you will need other housing during construction.
Often yes. Equity in the lot above your payoff may count, depending on the program.
A construction loan may be used to rebuild after a fire. Insurance proceeds may be applied toward the project depending on program guidelines and how your claim is handled.
Yes. PRMG construction programs are available in New Jersey. Local zoning and permit reviews can take time, so start early.
Larger rebuilds may be financed with a jumbo construction loan for eligible borrowers, which typically requires a larger down payment and reserves.
No. Owner-builder projects are not eligible. A licensed builder must act as the general contractor and complete builder registration.
It depends on the home. Extensive structural issues can favor rebuilding, while cosmetic and layout updates often favor renovation.
Guidelines change. Verify current program requirements with Ken Clark Jr. before relying on them for a transaction.
Disclaimer: This content is for educational purposes only and is not a commitment to lend, a guarantee of approval, or a rate quote. Loan programs, down payment requirements, terms, and eligibility depend on borrower, property, project, builder, and program qualifications, are subject to underwriting, and vary by state. Not all applicants or projects will qualify. Builder registration is a documentation review for program eligibility and is not an endorsement of any builder. Equal Housing Opportunity. Paramount Residential Mortgage Group, Inc. (PRMG), NMLS #75243. Ken Clark Jr., NMLS #225375. PRMG is licensed in 49 states, excluding New York.
Certified Mortgage Advisor and Branch Manager at PRMG Mortgage (NMLS #75243). 28 years in mortgage lending. Specializes in FHA, VA, conventional, DPA, jumbo, Non-QM, renovation, and construction financing for buyers and investors in Sacramento, New Jersey, and nationwide. PRMG is licensed in 49 states, excluding New York. Three-time Gold Award winner for Highly Reviewed Mortgage Team in Sacramento (2023, 2024, 2025). NMLS #225375.
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