Google Ads for Foundation Repair: Negative Keywords, Match Types and Settings That Stop Wasted Clicks

Foundation repair is an expensive search category, and a lot of the people typing "foundation" into Google will never hire you. Some want makeup. Some want a $20 crack filler. Some are students, job seekers or homeowners in a city you don't serve. Every one of those clicks costs real money.

This guide covers the part of Google Ads (regular search ads, billed per click) that most foundation and waterproofing companies under-invest in: deciding who should not see your ads. If you're looking for pay-per-lead Local Services Ads instead, see our separate guide to Google Local Services Ads for foundation repair. Most of what follows comes from Google's own help documentation, linked throughout.

Why foundation searches leak money

"Foundation" is an unusually ambiguous word. The same keyword can mean:

• Cosmetics: foundation makeup, foundation shades, foundation brush.
• Organizations: charitable foundations, foundation grants, foundation jobs.
• Do-it-yourself fixes: foundation crack filler, epoxy injection kit, hydraulic cement.
• Education and careers: foundation engineering courses, foundation repair technician jobs, how to become a foundation contractor.
• Construction of new foundations: pouring a new slab, foundation for a shed, foundation for a deck.

Google's broad match is the default match type, and Google says it can show your ad on searches that are related to your keyword, including searches that don't contain its direct meaning. That reach can find good leads, but in a category this ambiguous it also needs firm guardrails. Google itself says it's critical to pair broad match with Smart Bidding, which in turn needs reliable conversion data. If you're not yet tracking booked inspections as conversions, tighter match types and a strong negative list matter even more.

How negative keywords actually work

Negative keywords don't behave like normal keywords, and this trips up a lot of advertisers. From Google's About negative keywords page:

• Negatives don't match close variants. If you exclude "job," that doesn't automatically exclude "jobs." Add singular and plural forms and obvious synonyms yourself. (Google does say negatives account for casing and misspellings.)
• Negative broad match (the default) blocks your ad when the search contains all of the negative's words, in any order. A negative broad keyword crack filler blocks "filler for foundation crack," but not a search that only contains "filler."
• Negative phrase match ("crack filler") blocks searches containing those words in that order, with other words allowed around them.
• Negative exact match ([crack filler]) only blocks that exact search with no extra words. It's the narrowest option.
• Account-level negatives apply to all eligible search and shopping inventory in your account, which is a good home for terms you will never want (makeup, jobs).

Google also warns that too many negatives can stop your ads from reaching real customers. So the goal isn't the longest list. It's a list where every word is one no paying customer would use.

A starter negative keyword list for foundation and waterproofing

Use this as a starting point, then edit it for your services. Before adding each one, ask: "Could a homeowner who needs us ever type this?" If yes, leave it out or use exact match.

Cosmetics (safe as account-level negatives): makeup, cosmetics, concealer, shade, shades, brush, primer, powder, liquid foundation, matte, skin, skincare, sephora, ulta

Organizations and fundraising: grant, grants, charity, charitable, nonprofit, donation, scholarship, scholarships

Jobs and education: job, jobs, career, careers, hiring, salary, employment, apprentice, course, courses, class, training, certification, degree, engineering course

Do-it-yourself products (check these against your own offer): kit, kits, diy, do it yourself, yourself, hydraulic cement, caulk, filler, home depot, lowes, amazon

Unrelated construction: shed, deck, gazebo, tiny house, mobile home skirting (only if you don't serve manufactured homes)

Terms to think hard about before excluding:

• "cheap" or "cost": many real buyers search "foundation repair cost." Don't exclude price words blindly; they're often early-stage homeowners who will need an inspection.
• "how to": "how to fix a foundation crack" is usually do-it-yourself traffic, but "how to know if foundation is failing" can be a worried homeowner. Use exact or phrase negatives for specific how-to searches you've seen fail, not a blanket "how."
• "insurance": homeowners do search whether insurance covers foundation repair. Those searches can still become inspections if your landing page answers the question honestly.
• "mudjacking," "crawl space," "sump pump": only exclude services you truly don't offer.

Settings that matter as much as keywords

Location: presence vs. interest

Google's location targeting has a broad option ("Presence or Interest") that can reach people who are in your area or have shown interest in it. Google recommends it as a best practice for Search, but also says "Presence" makes sense when you only want to reach people physically in your target locations.

For a foundation company, think about who actually books. Someone in another state researching a house they're buying in your city can be a real lead. Someone in another state reading about foundation problems in general is not. Test both and judge by booked inspections, not clicks. Also exclude areas you won't drive to, and remember that a very small radius may barely serve at all, as Google notes.

Ad schedule

By default, ads run all day. Google's ad scheduling lets you limit days and hours or adjust bids by time. Many contractors switch ads off at night because nobody answers the phone.

That's reasonable for call-only ads. But homeowners also research in the evening, and a click that goes to your website at 9 p.m. can still become a lead if the site can capture it. The real question is: what happens after the click when the office is closed? We cover that in missed calls and after-hours leads.

Search partners and Display

Check whether your Search campaign is also opted into the Display Network or search partners. Neither is automatically bad, but judge each by booked inspections in your own data. Display in particular behaves very differently from someone actively searching "foundation repair near me."

Read the search terms report every week

Your keyword list is what you bid on. The search terms report shows what people actually typed before your ad appeared. Google suggests using it to add irrelevant terms as negatives and to refine match types.

A simple weekly routine:

1. Open Insights and reports → Search terms for the last 7 days.
2. Sort by cost.
3. For each term, decide: keep, add as a keyword (a good term you're not targeting directly), or add as a negative.
4. When you add a negative, pick the smallest word or phrase that blocks the bad intent without blocking good searches.
5. Write down what you excluded and why, so the next person doesn't undo it.

Note that Google omits low-volume terms from the report for privacy, so you won't see every search. That's another reason a thoughtful starter list matters.

Make conversions mean booked inspections

Negative keywords stop waste, but you also need to know which clicks work. If Google only counts "page views" or "clicked the phone number" as conversions, Smart Bidding will optimize for those, not for jobs. Better conversion actions for a foundation company are:

• a completed inspection booking,
• a submitted contact form with a real address,
• a phone call over a minimum length,
• a qualified chat lead.

Then compare campaigns by cost per booked inspection and, ideally, by sold jobs from your CRM. Cheap clicks that never book are expensive.

The landing page is part of the campaign

A tight keyword list can't fix a weak page. If you pay for "bowing basement wall repair," the click should land on a page about bowing walls, with photos of your work, the area you serve, and an obvious way to book a free inspection. Our website conversion checklist walks through the common leaks, and speed to lead explains why the first response matters so much.

Don't put claims in ads that you can't back up. The FTC's advertising guide for small businesses is clear that ads must be truthful and that advertisers need evidence for their claims before an ad runs. "Lifetime warranty" and "#1 in [city]" need to be true and supportable.

Where InspectionBooked fits

InspectionBooked doesn't manage Google Ads, choose keywords or run bids. It helps with what happens after the click. InspectionBooked adds an AI chat assistant to your website that answers homeowner questions from your own site content and FAQs, asks foundation-specific intake questions (crack type, water, urgency), collects a photo and contact details, and points the homeowner to your booking page, day or night. Each lead lands in your inbox and dashboard with the full conversation, so you can see what paid visitors were actually asking.

Try the demo to see a homeowner conversation, or start a free 14-day trial. Plans start at $25/month.