Best Link Building Companies: How to Compare Them

Link building is the part of search that most easily becomes a receipt for work nobody checked. The deliverable arrives as a spreadsheet of URLs, the buyer skims it, and nobody asks whether those pages have readers, whether the placement was paid without disclosure, or whether the site exists to sell links and nothing else. That gap is why the category contains both genuinely good firms and a long tail of vendors selling the same network of sites to everyone. This page sets out how to compare vendors on placements you can open and read, what the different pricing models actually mean, and the policy line that separates durable work from a liability sitting in your backlink profile.

median disclosed retainer, per month (USD)
$2,000
agencies with a verified published price
21
verified agencies in the index
134

Figures on this page come from the 134-agency verified catalog: each one was fetched from the agency's own published page and matched verbatim, with the source and retrieval date stored beside it.

Agencies with a verified published price

Agency Disclosed starting price Evidenced specialties HQ Source Checked
Prosperity Media 3 verified facts AUD 2,000/mo Content marketingSEO Surry Hills (Sydney), NSW, AU prosperitymedia.com.au August 2026
SimpleTiger 3 verified facts $5,000/mo SEO Sarasota, FL simpletiger.com August 2026
Yoghurt Digital 3 verified facts AUD 2,000/mo PPC & paid searchSEOSocial media marketing Surry Hills (Sydney), NSW, AU yoghurtdigital.com.au August 2026
Boulder SEO Marketing 2 verified facts $2,000/mo SEO Boulder, CO boulderseomarketing.com August 2026
EZMarketing 2 verified facts $1,500/mo PPC & paid searchSEO Lancaster, PA ezmarketing.com August 2026
Firebelly Marketing 2 verified facts $3,000/mo Social media marketing Indianapolis, IN firebellymarketing.com August 2026
Grounds for Promotion 2 verified facts $5,000/mo PPC & paid searchSEO Boulder, CO groundsforpromotion.com August 2026
Hook Agency 2 verified facts $2,800/mo PPC & paid searchSEO Minneapolis, MN hookagency.com August 2026
Kalungi 2 verified facts $50,000/mo Content marketing Kirkland, WA kalungi.com August 2026
The SEO Room 2 verified facts AUD 1,500/mo Content marketingSEO Canning Vale (Perth), WA, AU seoroom.com.au August 2026
Thrive Internet Marketing Agency 2 verified facts $500/mo SEO Arlington, TX thriveagency.com August 2026
Ciphers Digital Marketing 1 verified fact $2,500/mo SEO Gilbert, AZ ciphersdigital.com August 2026

How to compare link building vendors

  1. Ask for twenty recent live placements, not a sample. Ask any candidate for twenty links they placed in the last quarter for clients in comparable industries, and open every one. You are checking whether the page has real editorial content around it, whether the site publishes anything a human would read, and whether the same domains appear repeatedly across their client base.
  2. Establish exactly how placements are obtained. There is a real difference between earning coverage through original research or expert commentary, contributing genuine editorial content, and paying a site owner for a link. The last is not automatically fatal but it is a link scheme under Google's spam policies when it passes ranking signals undisclosed, and you carry that risk.
  3. Understand the pricing model and what a link costs. Vendors price per link, per campaign or on a monthly retainer with a target volume. Per-link pricing is easiest to compare and easiest to game with low-quality placements. Retainers with a named strategist and a quality floor tend to produce better work. Ask what happens in a month where nothing worth placing was available.
  4. Check the content that will carry the links. Most placements require something worth linking to. Ask who writes it, see two examples, and judge whether a publication would run it on merit. If the answer is that the vendor writes generic articles and places them on sites that accept anything, you are buying a footprint rather than authority.

The policy line, and why it matters commercially

Google's spam policies describe link schemes explicitly, including buying or selling links that pass ranking signals, excessive link exchanges and large-scale article campaigns with keyword-rich anchor text. The commercial point is not moral: it is that these placements are a liability that stays attached to your domain after the vendor relationship ends, and cleaning up a profile is slower and more expensive than building it well in the first place.

The practical test is whether the placement would exist if search engines did not. A genuine industry publication citing your original research would still run that piece. A site whose entire archive is guest articles for unrelated businesses would not exist at all. Apply that test to the twenty URLs you asked for and most vendor decisions make themselves.

What good actually looks like

The vendors worth paying build on something real: original data you can publish, a genuinely useful tool or resource, expert commentary placed with journalists, or relationships with trade publications in your sector. Those approaches are slower, produce fewer links per month, and cost more per placement. They also survive algorithm updates and do not need to be disavowed later.

Expect honest volume expectations. A serious vendor working a competitive B2B or professional services niche may place a handful of quality links a month, not dozens. If a proposal promises high volume at low unit cost, the arithmetic only works one way, and it is the way that eventually costs you.

Contract terms and reporting

Insist that reporting lists every placement with its URL, the date, the anchor text and how it was obtained. Insist that you can veto domains before placement. Ask what happens if a link is removed or the host site is deindexed, and whether replacements are included. These are ordinary terms and a vendor that resists them is protecting a supply chain they do not want inspected.

Ask also whether the vendor will disclose paid arrangements. The FTC's endorsement guidance requires material connections behind endorsements to be disclosed, and while it addresses advertising rather than search policy, a vendor casual about disclosure in one domain is usually casual in the other. Get the answer before signing rather than after a placement appears under your brand.

Questions people actually ask

How many links do we need?
The honest answer is that it depends on what is already ranking for your target queries and how strong those sites are. A vendor who quotes a link count before looking at the competitive landscape is selling a package, not a strategy. Ask them to show their reasoning against the actual results page you want to win.
Is paying for links always wrong?
Buying links that pass ranking signals is a link scheme under Google's published spam policies. Paid placements that are properly marked so they do not pass ranking signals are a legitimate advertising purchase, but then they are advertising, and should be judged on referral traffic and brand exposure rather than sold to you as search work.
What is a reasonable timeline?
Placements take weeks to arrange and their ranking effect appears over months. Judge the first quarter on placement quality and on whether the assets being built are genuinely link-worthy, rather than on rankings, which will not have moved enough to attribute reliably.
Should link building be bundled with our main retainer?
Either shape works, but insist on visibility. Bundled inside a general retainer, link work is the easiest line to underdeliver quietly. Ask for the placement list monthly regardless of who does the work, and treat any month with no report as a month with no work.

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The median advertised marketing retainer starting price per month in the US agency market was $2,000 in August 2026, across 21 verified agency facts recorded in FindAgency HQ Pricing Transparency Index.

Cite as: "FindAgency HQ Pricing Transparency Index", updated 2026-08-18, https://findagencyhq.com/best-link-building-companies/.

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median advertised marketing retainer starting price per month · the US agency market · August 2026

$2,000

Middle 50%$500 – $50,000
verified agency facts21

Source: FindAgency HQ Pricing Transparency Index

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