Buying Lambertville in 2026: Two Numbers, One Honest File

Sep 4

11 min read

Brick house at 70 Bridge Street Lambertville, no people

A buyer evaluating a short-term rental purchase in Lambertville, New Jersey is going to run into the same contested revenue picture that runs through this entire cluster's research: AirROI's $53,860 typical annual revenue figure sits well over this cluster's $45,000 gate, while AirDNA's $35,400 figure, pulled on a much larger 319-listing sample, sits under it. Crest and Cove Creative doesn't underwrite properties or evaluate deals; what this piece can do is lay out both figures plainly, alongside the specific registration realities that matter more to a Lambertville purchase than either revenue number does on its own.

This piece is deliberately narrow about what it won't do. It won't guess a median sale price for Lambertville rental properties; that figure wasn't confirmed in this research. And it won't treat a Zillow Home Value Index figure of $894,842, sourced through Rabbu, as if it were a short-term rental purchase comp; a home-value index measures general housing value, not what a specific property recently sold for as a rental-ready asset, and conflating the two would mislead a buyer trying to size an actual offer.

What follows covers the two revenue figures a buyer should hold side by side, and the single registration fact that matters more than either of them: the permit under Ordinance 32-2023 does not transfer with the sale, and grandfather status for non-owner-occupied units doesn't carry forward automatically either. This is not legal advice.

Two Revenue Figures, Presented Honestly

AirROI's most recent Lambertville pull shows $53,860 in typical annual revenue across 57 listings, 44.4 percent occupancy, a $384 ADR, and $165 RevPAR. AirDNA's pull, on a considerably larger 319-listing sample, shows $35,400, 55 percent occupancy, and a $194 ADR. One clears this cluster's $45,000 gate comfortably; the other doesn't. Neither should be discarded in favor of the other, and neither should be averaged into a blended figure that describes neither vendor's actual finding.

A buyer building a pro forma should run the numbers both ways: a conservative case using AirDNA's $35,400 figure, and a more optimistic case using AirROI's $53,860, and should understand that the true performance of any specific property they're evaluating could plausibly land anywhere in that range depending on which pool of comparable listings it more closely resembles. A rowhouse squarely inside the walkable historic core near Bridge Street likely tracks closer to AirROI's tighter, more location-specific sample; a property on the edge of a broader area might track closer to AirDNA's larger pool.

Rabbu's own figure, $57,957 on a 44-listing sample, sits close to AirROI's dollar amount but on notably lower 22 percent occupancy, worth noting as a third data point but not treated as a tiebreaker between the other two. Three sources, three sample sizes, and a buyer's own diligence, including a direct conversation with a seller about the specific property's actual historical performance if it's currently operating, is worth more than any single one of these three market-wide figures, and a seller's willingness to actually share that history is itself a useful signal about how the deal is likely to go.

do not guess a Purchase-Price Comp

This research did not confirm a median sale price for Lambertville rental properties specifically, and a buyer shouldn't accept an guessed figure from any source that can't point to actual recent comparable sales. What this research did surface is a Zillow Home Value Index figure of $894,842, sourced through Rabbu's data. A ZHVI figure is a general home-value estimate, useful as one input into understanding the broader housing market, but it is not the same thing as a short-term-rental-specific purchase comp, and it shouldn't be presented to a lender, a partner, or your own decision-making process as if it were one.

A real purchase-price benchmark for a specific Lambertville property should come from an actual comparable-sales analysis, ideally one that accounts for whether comparable properties carried existing STR registration or grandfather status at the time of sale, since that status materially affects a property's value as a rental asset and doesn't automatically transfer to a new buyer regardless of what a general home-value index suggests about the property's worth as housing.

It's worth being direct about why this distinction matters financially, not just definitionally. A ZHVI figure like $894,842 reflects what the broader market thinks a comparable house is worth as a place to live. A short-term rental purchase price should also reflect the property's actual, or realistically achievable, rental income and its confirmed registration path, two things a general home-value index has no way of accounting for. Treating the two as interchangeable risks a buyer overpaying relative to the property's real earning potential, or underpaying relative to its housing value, depending on which direction the mismatch runs, and neither error is one a buyer discovers until well after the offer has been accepted.

The Permit Doesn't Come With the House

This is the single most important fact for a Lambertville buyer to understand, more consequential to a purchase decision than either revenue figure above: a short-term rental permit under Ordinance 32-2023 dies on change of ownership. A new owner has to file a new initial application, at the same $250 rate as any first-time applicant, rather than inheriting whatever registration status the seller currently holds. A currently operating, fully compliant Lambertville short-term rental does not guarantee the same operating status for its next owner. This is not legal advice.

This matters most acutely for a non-owner-occupied unit currently benefiting from the grandfather provision in Section 5-11.2(F) of the city code, covered in detail in this cluster's rules post. That provision applies to units registered at the time of the ordinance's original adoption; it is not a transferable license, and a buyer should not assume that purchasing a currently grandfathered property automatically preserves that same non-owner-occupied eligibility once the sale closes and a new registration has to be filed.

Confirm current registration status, and what happens to it specifically upon a change of ownership, directly with the City Clerk's Office before making an offer contingent on the property's continued short-term rental eligibility. A buyer who assumes a currently legal, currently grandfathered listing will remain equally legal and equally grandfathered under new ownership is making an assumption this research explicitly cannot support, and that assumption is worth resolving with a phone call, not with a hopeful reading of the seller's disclosure paperwork.

What a Buyer's Own Underwriting Should Actually Contain

A defensible buyer packet for a Lambertville purchase should carry both revenue figures, AirROI's $53,860 on 57 listings and AirDNA's $35,400 on 319 listings, clearly labeled by source and sample size, with Rabbu's $57,957 noted as a third data point on a thinner sample. It should not contain a blended average of the three, and it should not contain an guessed median sale price; if a purchase-price comp is needed, it should come from an actual comparable-sales pull, not a ZHVI figure repurposed as something it isn't.

It should also state plainly, as its own line item separate from the revenue figures, that the property's current short-term rental registration, including any grandfather status, does not transfer with the sale, and that a new owner will need to file and be approved for a new registration before operating legally. That's a real underwriting risk distinct from revenue uncertainty, and it deserves its own line in a buyer's diligence checklist, confirmed with the City Clerk's Office before the purchase closes, not assumed away because the current listing looks clean on paper.

Crest and Cove Creative does not underwrite short-term rental purchases or provide investment advice; a buyer working through this decision should pair this cluster's research with their own qualified real estate and legal counsel for the transaction itself. What this cluster can help with, once a property is under contract or closed, is building the listing's actual marketing around what Lambertville's confirmed guest data and landmarks support, which is where the next phase of this decision genuinely lives.

Weighing the Product, Not Just the Numbers

Beyond the revenue and registration questions, a buyer should look honestly at what kind of property they're purchasing. Lambertville's listing stock runs heavily toward 19th-century brick rowhouses and carriage houses inside a walkable historic district, and AirROI's own data shows entire-home listings at 84.2 percent of its 57-listing sample, suggesting this market rewards a genuine, individually run property rather than a unit designed for large-scale, hands-off management. A buyer expecting to run this purchase the way they might run a larger, professionally managed portfolio elsewhere should adjust that expectation to match what this specific market's listing stock and guest base actually look like.

That listing stock profile also has practical purchase implications worth raising with an inspector and a contractor before closing, not after: historic-district properties often carry age-related maintenance considerations, and a pre-1978 structure specifically raises the lead-safe certification requirement covered in this cluster's startup-costs post. Factor that into your purchase-condition assessment alongside the registration and revenue questions above, rather than treating it as a separate, later concern, since a lead-safe requirement discovered after closing is a materially different budget conversation than one priced into the offer itself.

Timing a Purchase Against the Registration Calendar

Because the annual permit renews April 1 and carries escalating late fees for missed deadlines, the timing of a closing relative to that date is worth factoring into a purchase plan. A buyer closing in February or March, for instance, should confirm directly with the City Clerk's Office whether a new registration needs to be filed and approved before that April 1 date to avoid entering late-fee territory in the very first year of ownership, a detail easy to overlook amid the broader closing process.

This is a small, mechanical detail compared to the revenue and registration-transfer questions covered above, but it's exactly the kind of thing that's cheap to confirm before closing and genuinely inconvenient to discover afterward. Add it to the same due-diligence checklist as the larger questions rather than treating it as an afterthought.

A Buyer's Checklist Before You Make an Offer

Pull together, in one place, before you submit an offer: both AirROI and AirDNA figures for the specific area your target property sits in, a direct confirmation call to the City Clerk's Office about current registration status and what happens to it on sale, a real comparable-sales pull rather than a repurposed home-value index, and an inspector's read on the property's age-related maintenance needs given its likely pre-1978 construction. None of these individually is complicated to gather, but together they replace guesswork with confirmed facts across the parts of this decision that actually carry the most risk, and a seller or agent who bristles at any of these requests is itself worth paying attention to.

If a seller's own packet is missing any of these, particularly the direct registration-transfer confirmation, that's worth treating as a gap to fill yourself before closing, not a detail to assume in your favor because the listing is currently operating without issue under its current owner. What's true for the seller today isn't automatically true for you the day after closing, and the cost of confirming it now is far lower than the cost of discovering a registration gap after the deal is done.

A Closing-Day Reminder on the Permit Question

Given how central the non-transferable permit issue already is to this piece, it's worth restating it in the most practical form possible for closing day: whatever STR permit the current owner holds, it does not survive the change of ownership. You will need to file a new $250 initial application as the new owner, and there is no grandfathering mechanism that lets you inherit the seller's existing approval.

Build this into your closing timeline explicitly rather than treating it as paperwork you'll handle after you have keys. If your financing or your first-booking plans assume immediate STR operation, confirm how long a new application realistically takes to process before you count on that revenue in your first months of ownership.

This is a narrower, closing-specific version of the underwriting advice already covered in this piece: don't build your numbers, whether they're revenue projections against AirROI's $53,860 or AirDNA's $35.4K, around an assumption that the seller's compliance status transfers to you. It doesn't, and confirming your own application timeline directly with the city is the more reliable path.

A buyer who verifies this timeline before closing, rather than assuming a smooth handoff, is in a materially stronger position to plan their first-season revenue realistically.

Frequently Asked Questions

What revenue figure should I use to evaluate a Lambertville purchase?

There isn't a single figure to use exclusively. AirROI shows $53,860 typical annual revenue on 57 listings; AirDNA shows $35,400 on a much larger 319-listing sample. Run your pro forma both ways, conservative and optimistic, rather than picking one, and weigh which sample size more closely matches the specific property you're evaluating before committing to either number.

Does the current owner's short-term rental permit transfer when I buy the property?

No. The permit under Ordinance 32-2023 dies on change of ownership. A new owner has to file a new initial application at the standard $250 rate, and this is true regardless of how compliant or well-established the seller's current registration is. Confirm this directly with the City Clerk's Office before making an offer contingent on continued STR eligibility.

If the property is currently a grandfathered non-owner-occupied unit, do I keep that status?

Not automatically. The grandfather provision in Section 5-11.2(F) applies to units registered at the time of the ordinance's original adoption, and because the permit itself resets on sale, a new owner shouldn't assume the same non-owner-occupied eligibility carries forward. Confirm this specifically with the city before closing on a property because of its current grandfathered status.

What's a reasonable median sale price to use for a Lambertville rental comp?

This research didn't confirm a Lambertville-specific median sale price for rental properties. A Zillow Home Value Index figure of $894,842 surfaced through Rabbu's data, but that's a general housing-value estimate, not a short-term-rental purchase comp, and shouldn't be used as one. Get an actual comparable-sales analysis for your specific target property instead of relying on a general index.

Why do AirROI and AirDNA disagree so much on Lambertville's revenue figure?

Likely in significant part due to sample size: AirDNA's 319-listing pool is more than five times larger than AirROI's 57-listing pool, suggesting it may be counting a broader geography or property mix. Neither vendor's exact methodology is detailed enough here to resolve the gap precisely, so present both rather than picking one as definitively correct.

Does Crest and Cove Creative help underwrite Lambertville purchases?

No. Crest and Cove Creative does not underwrite short-term rental properties or provide investment or financing advice. This piece lays out the confirmed revenue and registration facts a buyer should know; the underwriting and legal work itself should go through qualified real estate and legal professionals familiar with the actual transaction and the local market.

Should I average the three revenue figures for a simpler underwriting number?

No. An average of $53,860, $35,400, and $57,957 produces a number none of the three vendors actually stands behind, built from different sample sizes and windows. Present each figure with its source and sample size, and build a conservative-to-optimistic range from the real numbers rather than a blended guessed one nobody actually produced or would defend.

What's the biggest non-revenue risk in a Lambertville STR purchase?

Registration continuity. Because the permit dies on sale and grandfather status for non-owner-occupied units doesn't automatically transfer, a buyer purchasing specifically for the current listing's STR eligibility faces real uncertainty about whether that same eligibility will be approved under their own name after closing. Confirm this directly with the City Clerk's Office before finalizing an offer.

Can I use New Hope's numbers if I'm also considering a cross-river property?

No, not for a Lambertville property. New Hope's own figures, roughly $28,341 on AirROI or $38,200 on AirDNA, describe a different state with a different registration desk under its own Chapter 219 framework. even if you're evaluating properties on both sides of the river simultaneously, in the same buying trip.

What should be in my due-diligence checklist before making an offer?

At minimum: both revenue figures labeled by source, confirmation of the property's current registration status directly from the City Clerk's Office, explicit confirmation of what happens to that registration upon sale, and an actual comparable-sales pull for pricing rather than a general home-value index. Pair all of this with qualified real estate and legal counsel before closing.

Work with Crest & Cove Creative

AirROI clears this cluster's $45,000 revenue gate for Lambertville. AirDNA doesn't. Before you make an offer, understand why, and understand that the seller's permit doesn't come with the house either way.

Once you're under contract or closed, let's build a marketing plan around what Lambertville's confirmed guest data and landmarks actually support. We help with listing positioning and demand, not underwriting or financing decisions. Send the live listing draft and the facts you can actually cite.

Reach out at crestcove.co or (256) 998-7502.